Podcast
Questions and Answers
Which of the following advancements significantly contributed to the Neolithic Revolution?
Which of the following advancements significantly contributed to the Neolithic Revolution?
- The creation of a standardized monetary system for economic exchange.
- The development of long-distance trade networks for exotic goods.
- The invention of the wheel for improved transportation.
- The specialization in non-farming tasks due to food surpluses. (correct)
What characteristic of the river basins of the Tigris-Euphrates, Nile, and Indus was MOST crucial for early agricultural development?
What characteristic of the river basins of the Tigris-Euphrates, Nile, and Indus was MOST crucial for early agricultural development?
- Proximity to mountain ranges for timber and stone resources.
- Warm subtropical climate and fertile silt deposits. (correct)
- Natural defenses against invasion due to surrounding deserts.
- Abundant deposits of mineral ores for tool production.
Which societal change occurred in settlements by 1500 BC?
Which societal change occurred in settlements by 1500 BC?
- A shift towards egalitarian social structures with communal resource sharing.
- The emergence of specialized labor roles, including administrators, traders, and engineers. (correct)
- The implementation of democratic governance systems with elected officials.
- A reliance on nomadic hunter-gatherer lifestyles due to resource scarcity.
Why was access to building materials a critical site factor for early settlements?
Why was access to building materials a critical site factor for early settlements?
How did the need for defense influence the location of early settlements like Durham and Edinburgh?
How did the need for defense influence the location of early settlements like Durham and Edinburgh?
Which factor explains why settlements often developed at nodal points?
Which factor explains why settlements often developed at nodal points?
Which type of settlement is MOST likely to develop at the lowest bridging point on a river before it enters the sea, and why?
Which type of settlement is MOST likely to develop at the lowest bridging point on a river before it enters the sea, and why?
How do north-facing slopes influence settlement in the Northern Hemisphere?
How do north-facing slopes influence settlement in the Northern Hemisphere?
How does the economic base theory explain the difference between basic and non-basic economic activities in settlements?
How does the economic base theory explain the difference between basic and non-basic economic activities in settlements?
What is the key indicator that distinguishes a rural settlement from an urban settlement in terms of economic activity?
What is the key indicator that distinguishes a rural settlement from an urban settlement in terms of economic activity?
What characterizes a dispersed settlement pattern, and under what conditions is it MOST likely to develop?
What characterizes a dispersed settlement pattern, and under what conditions is it MOST likely to develop?
What is the MAIN reason feudal open-field systems of farming encouraged the nucleation of settlements?
What is the MAIN reason feudal open-field systems of farming encouraged the nucleation of settlements?
How does increased mechanization in agriculture contribute to urbanization?
How does increased mechanization in agriculture contribute to urbanization?
What factor has MOST significantly contributed to uncontrolled urban growth in many economically less developed countries since the 1950s?
What factor has MOST significantly contributed to uncontrolled urban growth in many economically less developed countries since the 1950s?
What is considered a major shortcoming of urban models developed in the 20th century?
What is considered a major shortcoming of urban models developed in the 20th century?
According to the Burgess model (concentric zone model), which zone is MOST likely to be characterized by deteriorating housing and first-generation immigrants?
According to the Burgess model (concentric zone model), which zone is MOST likely to be characterized by deteriorating housing and first-generation immigrants?
How does land value typically vary in a city, according to urban land value models?
How does land value typically vary in a city, according to urban land value models?
What is the primary function of the Central Business District (CBD) in a city?
What is the primary function of the Central Business District (CBD) in a city?
What is a common characteristic of industrial zones in developed countries?
What is a common characteristic of industrial zones in developed countries?
What is the phenomenon of gentrification in the context of urban residential zones?
What is the phenomenon of gentrification in the context of urban residential zones?
Which challenge is MOST directly associated with housing in developing cities?
Which challenge is MOST directly associated with housing in developing cities?
How does low rainfall MOST directly influence the type of farming that is likely to be practiced in an area?
How does low rainfall MOST directly influence the type of farming that is likely to be practiced in an area?
How can frost impact agriculture?
How can frost impact agriculture?
How do strong winds affect soil erosion, and what agricultural practices can mitigate this?
How do strong winds affect soil erosion, and what agricultural practices can mitigate this?
The steeper the angle of a slope gradient, the more likely what outcome will occur?
The steeper the angle of a slope gradient, the more likely what outcome will occur?
How does global warming potentially affect agricultural regions?
How does global warming potentially affect agricultural regions?
How do inheritance laws MOST commonly impact farm sizes, and what is the consequence for farming practices?
How do inheritance laws MOST commonly impact farm sizes, and what is the consequence for farming practices?
Which factor is MOST critical for determining the ideal location for growing a specific crop or raising livestock?
Which factor is MOST critical for determining the ideal location for growing a specific crop or raising livestock?
What differentiates subsistence farming from commercial farming practices?
What differentiates subsistence farming from commercial farming practices?
Which factor BEST explains why shifting cultivation is now limited to areas with low population densities?
Which factor BEST explains why shifting cultivation is now limited to areas with low population densities?
What characterizes intensive farming compared to extensive farming?
What characterizes intensive farming compared to extensive farming?
What limits potential production is a Meditteranean agricultural region?
What limits potential production is a Meditteranean agricultural region?
What is eutrophication, and which farming practice contributes to it MOST directly?
What is eutrophication, and which farming practice contributes to it MOST directly?
How do financial incentives encourage environmental improvements via farming?
How do financial incentives encourage environmental improvements via farming?
Why might yields initially drop when converting from conventional to organic farming?
Why might yields initially drop when converting from conventional to organic farming?
Which factor is MOST associated with the rise in global food prices in recent years?
Which factor is MOST associated with the rise in global food prices in recent years?
According to the Law of Diminishing Returns, what happens as more fertilizer is added to a field?
According to the Law of Diminishing Returns, what happens as more fertilizer is added to a field?
What is a nation-state?
What is a nation-state?
What defines a Statless Nation?
What defines a Statless Nation?
Which of the following aspects of state geography can most directly impact agricultural potential?
Which of the following aspects of state geography can most directly impact agricultural potential?
What MOST accurately describes the purpose of a Centripetal Zone?
What MOST accurately describes the purpose of a Centripetal Zone?
Flashcards
Neolithic Revolution
Neolithic Revolution
The shift from migratory hunter-gatherer lifestyles to settled farming communities, marked by domestication of animals and cultivation of cereals.
Settlement Factors
Settlement Factors
Water supply, building materials, arable land, grazing, ease of communication, natural hazard avoidance, defense, and fuel.
Situation
Situation
Where a settlement is located relative to its surroundings (neighboring settlements, rivers, uplands).
Site
Site
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Confluence Towns
Confluence Towns
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Resource Settlements
Resource Settlements
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Basic Economic Activity
Basic Economic Activity
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Non-Basic Economic Activity
Non-Basic Economic Activity
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Dispersed Settlement
Dispersed Settlement
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Nucleated Settlement
Nucleated Settlement
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Linear/Ribbon Settlement
Linear/Ribbon Settlement
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Urbanization
Urbanization
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Burgess Model
Burgess Model
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Hoyt's Sector Model
Hoyt's Sector Model
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Central Business District (CBD)
Central Business District (CBD)
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Edge-of-city sites
Edge-of-city sites
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Gentrifaction
Gentrifaction
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Precipitation
Precipitation
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Angle of Slope
Angle of Slope
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Soils (edaphic factors)
Soils (edaphic factors)
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Land Tenure
Land Tenure
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Cash-tenancy
Cash-tenancy
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Plantation
Plantation
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Transport (farming)
Transport (farming)
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Subsistence Farming
Subsistence Farming
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Extensive Farming
Extensive Farming
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Intensive Farming
Intensive Farming
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Irrigation
Irrigation
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Chemicals (Farming)
Chemicals (Farming)
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Loss of natural habitats
Loss of natural habitats
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Environmental Improvement Schemes
Environmental Improvement Schemes
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Genetically Modified Crops
Genetically Modified Crops
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Malnutrition (LEDCs)
Malnutrition (LEDCs)
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Chronic undernutrition
Chronic undernutrition
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Law of Diminishing Returns
Law of Diminishing Returns
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Fragmentation
Fragmentation
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Political Geography
Political Geography
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State
State
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Nation
Nation
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Spatial patterns
Spatial patterns
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Study Notes
Origins of Settlement
- In 800 BC, the world's population lived in small hunter-gatherer groups, primarily in subtropical areas at a subsistence level.
- These people were typically migratory.
- The Neolithic revolution saw the transition from migratory hunter-gatherers to sedentary farmers.
- Domestication of animals (sheep, goats, cattle) occurred.
- Cereals (wheat, rice, and maize) were cultivated.
- Food surpluses allowed some community members to specialize in non-farming tasks.
- Three river basins (Tigris-Euphrates, Nile, and Indus) shared similar natural characteristics.
- Hills provided pasture for domestic animals.
- Flat floodplains were located near large rivers.
- Fertile silt was deposited during times of flooding.
- A relatively dry climate maintained soil fertility and enabled the use of mud for building.
- A warm subtropical climate prevailed.
- Rivers provided a permanent water supply for domestic use and irrigation as farming developed.
- By 1500 BC, larger towns and urban centers had emerged.
- There were administrators to organize crop collection and food supply distribution.
- Traders were present.
- Engineers developed irrigation systems.
- A ruling elite collected taxes to support the military, priesthood, and other non-productive members like artists, philosophers, and astronomers.
Settlement Location Factors
- Water supply is a crucial factor.
- Building materials are necessary for construction.
- Arable land is needed for crop cultivation.
- Grazing land is required for animals.
- Ease of communication is important.
- Natural hazards, such as flooding, should be avoided.
- Defense from flooding via shelter from gales.
- Defense capabilities are a consideration.
- Fuel supply is essential.
Situation and Site of Early Settlements
- Site refers to the characteristics of the specific location of a settlement, which was vital for its initial establishment and growth.
- Situation describes a place's location in relation to its surroundings like neighboring settlements, rivers, and uplands.
- This situation determines if a settlement remained small or grew into a larger town or city.
- Early settlements were rural economies focused on self-sufficiency.
- Transport systems were limited.
Site Factors
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Access to a water supply is essential year-round.
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Rivers needed to be clean and safe.
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In areas with limited rainfall, settlements were established where the water table was close to the surface, creating wet-point sites.
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Flood avoidance was crucial.
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Villages were built on mounds or river terraces in English Fenlands and coastal marshes.
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Being above flood level resulted in dry-point sites.
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Building materials were necessary.
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Materials were heavy to transport and transport was poor.
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Settlements needed to be near sources of stone, wood, or clay.
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Food supply was important.
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Ideal locations supported both animal rearing and crop cultivation.
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Climate, soil fertility, and type influenced the quality, quantity, and range of farm produce.
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Relief factors must be considered.
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Flat, low-lying land was easier to build on (e.g., North German Plain).
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The need for defense sometimes superseded this consideration.
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Defense was essential against surrounding tribes.
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Some sites were surrounded on 3 sides by water (e.g., Durham).
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Others were built on high ground with commanding views (e.g., Edinburgh).
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Nodal points, where valleys meet, were often occupied by settlements that became route centers.
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Confluence towns are found where rivers join.
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Khartoum is located at the junction of the White Nile and the Blue Nile.
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Gap towns are settlements or sites that controlled routes through hills or mountains, such as Dorking and Carcassonne.
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Fuel supply was needed for cooking and warmth.
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Firewood was the main source of fuel.
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Firewood is still is used in many of the least economically developed areas, such as the Sahel.
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Settlements have tended to grow where routes cross rivers, creating bridging points.
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For trade and transport, the lowest bridging point before a river entered the sea (e.g., Newcastle Upon Tyne) was significant.
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Harbors with sheltered sea inlets and river estuaries were suitable for establishing coastal fishing ports.
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Later, deep harbors were required as ships became larger.
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Shelter aspect is important.
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North-facing slopes offered favored settlement sites.
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These sites are protected from cold, southerly winds and receive maximum insolation, opposite in the Northern Hemisphere.
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Resources influenced settlement locations.
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Settlements grew in places with access to specific local resources (e.g., salt, iron ore).
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Choice of site today is likely to be political, social, and economic.
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Roberts developed a model using intrinsic qualities (site) and extrinsic qualities (situations).
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Extrinsic factors change over time, making settlements dynamic.
Functions of Settlements
- Rural settlements may function as market agriculture centers, route centers/transport hubs, small service towns, defensive locations, or dormitory/overspill/satellite communities.
- Urban settlements in developed countries often function as mining centers, manufacturing/industrial hubs, or route centers/transport hubs.
- Other urban functions include retail/wholesale, religious/cultural activities, trade/commerce/finance administration, resort/recreation, residential areas or new towns.
- In developing countries, urban centers may serve as administration hubs, route centers/ports, marketing/agriculture centers, mining locations, commercial areas, religious sites, or residential zones.
Economic Base Theory
- Settlements perform two broad categories of economic activity.
- Basic economic activity produces goods or services for export, generating economic growth.
- Non-basic economic activity produces goods or services within the settlement, contributing little to economic growth.
Differences Between Urban and Rural Settlement
- There is wide range of views on the minimum population required for a settlement to be termed a town.
- Less than 25% of the population engaged in agriculture is a typical dividing point between urban and rural.
- Rural settlements are associated with primary activities.
- In urban areas, most of the workforce are employed in secondary and tertiary industries.
- Rural areas have recently become commuter or dormitory settlements for people working in adjacent urban areas.
- This includes locations for smaller, footloose and also in high-tech industries.
- Services, such as schools, hospitals, shops, public transport, and banks, are usually limited in rural areas.
- In rural areas, settlements are widely spaced, consisting of individual farms, residential areas, and small-scale industry.
- In urban areas, settlements are closely packed, with greater land use for residential, industrial, service, and open-space provision.
- Rural settlements tend to have more inhabitants over 65 years old.
- Urban settlements have a higher economic activity and/or secondary school age population.
- Urban areas have spread outwards into the rural fringe.
Rural-Urban Continuum
- In highly urbanized countries like Japan and the UK, there are no longer clear-cut divisions between town and country.
- Transition Zones are present
- Extreme rural areas
- An index of rurality using variables include people +65.
- Intermediate rural areas
- Proportion employed in primary, secondary, tertiary sectors
- Intermediate non-rural areas
- Population density, mobility
- Extreme non-rural areas
- Proportion commuting
- Distance from a larger town
Rural Settlements Pattern and Morphology
- The patterns and shapes of settlements come in various forms.
- Isolated settlements are individual buildings in areas of extreme physical difficulty where the natural resources are insufficient to maintain more than a few inhabitants.
- Example of isolated settlement type: The Amazon rainforests, planned pioneer areas (Canadian prairies)
- Dispersed settlements are a scattering of individual farms and houses across an area, forming a hamlet, that are often separated by 2-3km of farmland.
- Nucleated settlements are common in rural areas where buildings have been grouped closely together for economic, social, or defensive purposes.
- Nucleated settlements come in several forms such as
- Regular grid
- Regular radial
- Irregular grid
- Irregular agglomerated.
- Loose-knit settlements are similar to nucleated settlements except the buildings are more spread out.
- The space is taken up by individual farms, which are still found within the village itself.
- Linear or Ribbon settlements are where buildings are strung out along a main line of communication or along a confined river valley.
- Street Villages: Planned linear villages
- Can be regular or irregular
- Rings and Green Villages are found in many parts of Sub-Saharan Africa and the Amazon.
- Houses are built around a central area, which was left open for tribal meetings and communal life.
- Planned settlements. -Dispersed and Nucleated Rural Settlements depend on local physical and economic conditions, time and distance factors, and social factors.
- Conditions of hardship create dispersed settlements.
- Natural resource limit dispersion
- A lack of transport also limits settlement
- Forms of land tenure
- Civil unrest
Causes of Dispersion
- Increased incidence of dispersed settlement:
- Growth of large estates.
- Extension of farming into hilly areas.
Causes of Nucleation
- Majority of humans have preferred to live in groups.
- Either a limited or excess water supply.
- The need to group together for defense and protection
- Feudal open-field system of farming encouraged nucleation
Urbanisation
- Urbanisation is defined as the process by which an increasing proportion of the total population lives in towns and cities.
- Rapid urbanisation has occurred twice in time and space.
- During 19th Century: In economically more developed countries
- Industrialisation led to a huge demand for labour in mining and manufacturing centers.
- Urbanisation was a consequence of economic development
- Since the 1950's: In economically less developed countries
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Migration from rural areas and the high rate of natural increase in population has resulted in uncontrolled growth in many cities.
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Urbanisation is developing countries as a consequence of population movement and growth is not an integral part of development
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The use of different criteria by countries to define city size, collecting accurate census data or accurately estimating natural changes made annually between each 10-year census, and obtaining accurate migration figures. Population data is not given due to these problems.
- Especially where refugees and illegal immigrants are involved
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Noticeable trends in the growth of so called' million cities' since the mid 1980's
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Most large cities are in South-East Asia and Latin America
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Most fast growing cities are in South-East Asia although in-migration is usually more significant than natural increase
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Although the rate of growth slowed in many developed countries in the 2nd half of 20th century
- It has increased again, mainly due to immigration, in this century
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In China, with the largest cities, it is those nearest to rural areas that are growing due to rural-urban migration
Models of Urban Structures
- Geographers and sociologists tried to identify and explain variations in spatial patterns.
- Patterns show differences and similarities in land use, and/or social groupings within the city.
- Reflect how urban areas evolved economically and socially in response to changing conditions over a period of time.
- Urban models have limitations and have always been open to criticism.
- Only by understanding the early structure of an urban area that we can appreciate the changing processes that are shaping our physical and social cities today.
Burgess, 1924
- Attempted to identify areas within Chicago based on the outwards expansion of the city and the socioeconomic groupings of its inhabitants.
Basic assumptions:
- The city was built on flat land which gave equal advantages in all directions
- Morphological features such as river valleys were removed.
- Transport systems were of limited significance being equally easy, rapid, and cheap in every direction.
- Land values are highest in the center of the city and declined rapidly outwards to give a zoning of urban functions and land use.
- The oldest buildings were in, or close to, the city center.
- Buildings became progressively newer towards the city boundary.
- Cities contained a variety of well-defined socio-economic and ethnic areas
- The poorer classes had to live near the city center place of work
- Couldn't afford transport/expensive housing
- There were no concentrations of heavy industry
Burgess' concentric zones:
- The central business district (CBD): Contains major shops and offices, center for commerce and entertainment, focus for transport routes.
- Transition/Twilight Zone: Where oldest housing is either deteriorating into slum property or being 'invaded' by light industry. Inhabitants are poorer social groups and first-generation immigrants
- Low-class housing: Occupied by people who escaped Zone 2 or by 2nd generation immigrants who work in nearby factories
- Medium-class housing: Higher quality housing and council estates
- High-class housing: Occupied by people who can afford the expensive properties and the high cost of commuting.
Hoyt, 1934
- Based on the mapping of eight housing variabilities. Tried to account for changes in the distribution of residential patterns
Basic assumptions:
- Wealthy people who could afford the highest rates, chose the best sites
- Resolved land use conflicts
- Wealthy residents could afford private cars or public transport so lived further from industry and nearer to main roads.
- Similar land use attracted other similar land uses, concentrating a function in a particular area and repelling others
- Led to sector development
Hoyt's sector model:
- Areas of highest rent tend to be alongside main lines of communication and that the city grow in wedges
- Once an area developed a land use, it retained that land use
Mann, 1969
- Combines the ideas of Burgess's zones and Hoyt's sectors
- The twilight zone was not concentric to the CBD but lay to one side of the city which allowed, elsewhere, wealthier residential areas
- Heavy industry was found in sectors along main lines of communication
- Low-class housing should be called zone of older housing
- Higher-class/modern housing was usually found away from industry smoke
- Local governments played a role in slum clearance and gratification
- Led to large council estates which took the working class/low incomes to the city edge
Ullman and Harris, 1949
- Produced a more realistic model but consequently ended with a more complex model
- Modern cities have more complex structures than that suggested by Burgess and Hoyt
- Cities do not grow from one CBD, but from several independent nuclei
- Each nucleus acts as a growth point
- In time, there will be an outward growth from each nucleus until they merge as one large urban center
- If a city becomes too large and congested, some functions may be dispersed to new nuclei
The Land Value Model/Bid-Rent Theory
- Based upon locational rent
- In a free market the highest bidder will obtain the use of the land
- Highest bidder is likely to be the one who can obtain the maximum profit from that site so can pay the highest rent
- The most expensive sites in most cities are the CBD
- Peak land value intersection - the most valuable site within the CBD
- Due to accessibility and the shortage of space
Functional Zones within the City
- Different parts of the city have their own specific function
The Age of the Area:
- Buildings usually get older towards the city center except that most CBD's and many old inner-city areas have been redeveloped and modernised
- Land values: These increase rapidly from the city boundary in towards the CBD
- Accessibility: Some functions are more dependent on transport than others
The Central Business District
- The CBD is regarded as the center for retailing, office location and service activities
- Contains principal commercial streets and main public buildings
- Other types of city-center land use
- Government and public buildings, churches, educational establishments
- Non-CBD functional elements
The Delimitation of the CBD
- Formulate one or more hypothesis before you begin your field work
- Collect, as a group, the relevant data
- Determine how you will record that data
- Discuss findings
The Main Characteristics of the CBD
- Contains major retailing outlets
- Requires largest threshold population
- Retail outlets compete for the prime sites
- Contains high proportion of the city's main offices
- Contains the tallest buildings (competition for land)
- Greatest number and concentration of pedestrians
- Greatest volume and concentration of traffic
- Greatest accessibility
- Meeting point of major lines
- Highest land value in the city
- Constantly undergoing change
- Shops are department stores, specialists' shops
- Multi-story car parks
- Cultural/historical museums and castles
Retailing
- Traditional Shopping patterns
- Hierarchy contains two main types of shops:
- Those selling convenience/low-order goods, bought frequently (daily)
- Not sufficiently high in value (small chain stores)
- Those selling comparison/high-order goods
- Bought less frequently but need a higher threshold of population
- Town centers
- Go through constant change either to attract new customers or to restrict losses of existing shoppers to the regional shopping centers or to internet shopping
- Out of town shopping centers
- Shopping outlets began location on the edge of towns and cities to take advantage of economic of scale, lower rents, and more pleasant and planned environment
- Allows for future expansion, essential larger car parking areas
- Developments have included the following:
- Supermarkets
- Retail parks
- Regional shopping centers
Financial Zone
- Including banking, insurance, accountancy
- New technology has allowed the easier transfer of data and had reduced the need for face-to-face contact
Industrial Zones
- Traditional industries closed down or moved to edge-of-city sites
- Replacement industries are often on a small scale and compete for space with warehouses and DIY shops
- Most industries are 'footloose' and include high-tech, electronics, IT software houses, media/news companies
- Food processing and distribution firms and those providing services (waste recycling)
Residential Zone
- Some inner-city areas have undergone a process known as gentrification
- Old, sub-standard housing is bought, modernised, and occupied by more wealthy families
Functional Zones in Developing Cities
- Inner Zone
- Historical, wealthy part
- Often in high-security, modern, high-rise apartments
- Sometimes well-guarded, detached houses
- Middle Zone
- Middle class
- Self-constructed houses
- Authorities may have added some basic infrastructure and amenities
- Running water, sewerage, electricity
- Outer Zone
- Migrants (informal dwellings/shanty towns)
- Quality of housing decreases rapidly with distance from city center
- Industry
- Planned within inner zone or grown spontaneously along main lines of communication
Problems
- Housing
- Authorities unable to provide adequate shelter and services for rapidly growing urban population
- People sleep on pavement
- People rent single rooms
- People build own shelter on and which they do not own and which they have no permission to build
Services
- Lack electricity, running water, and sewerage removal
- Hinders industrial growth and affects the material standard of living in homes
- Shortage of schools, teachers, hospitals, police and ambulance services are unreliable
Pollution and Health
- Drinking water is often contaminated with sewage which gives rise to outbreaks (cholera, typhoid, and dysentery)
- Uncollected rubbish is a breeding ground for diseases
Unemployment and Underemployment
- New arrivals into the city outnumber the number of jobs available
- Majority of people who do work are in the informal sector
- Street trading, food processing, services, local crafts
Transport
- Road network is likely to be unable to deal with large volume of traffic
- Severe air pollution and high accident rate
Farming and Food Supply
- Environmental factors exert a major influence in determining the type of farming practiced in any area
- The environment is seen to be an input converted into monetary terms
- The optimum location is where total cost of production per unit output is minimised for that crop/livestock
- The profitability of producing the crop/rearing animals is reduced when increased inputs cease to give proportionate increases in output (law of diminishing returns)
Temperature
- Critical for plant growth
- The growing season is the number of days between the last severe frost of Spring and the first of Autumn.
- Synonymous with the number of frost-free days that are required for plant growth
- Frost is more likely to occur in hollows and valleys
- Beneficial effect as it breaks up the soil and kills pests in winter
- But also damages plants and destroys fruit blossom in spring
Precipitation and Water Supply
- The mean annual rainfall for an area determines whether its farming is likely to be based upon tree crops, grass/cereals, or irrigation
- Depends on temperature and rate of evapotranspiration
- Type of precipitation is also vital:
- Long steady periods of rain lead to infiltration into soil
- Short, heavy downpours lead to surface runoff and erosion
- Hail is damaging to crops
- Snow is beneficial as it insulates ground from extreme cold in winter and provides moisture on melting
Wind
- Strong winds increase evapotranspiration rates
- Allow soils to dry and become vulnerable to erosion
- Hurricanes, typhoons, tornadoes can destroy crops
- Other winds are beneficial to agriculture
- Melting snow on Alps, increasing length of growing season
- The föhn and chinook winds help melt snow in mountain areas
Altitude
- The growth of various crops is controlled by decrease in temperature with height
- As height increases, so too does exposure to wind and the amounts of cloud, snow and rain, while growing season decreases
- Soil takes longer to develop at higher altitudes
- Fewer mixing agents present
Angle of Slope (gradient)
- Slope affects the depth of soil
- Influences erosion and limits the use of machinery
- Many slopes in Southeast Asia have been terraced to increase the area of cultivation
Aspect
- Important part of microclimate
- Adret slopes:
- In Southern hemisphere, slopes that face North
- Higher temperatures, drier soils
- Receive maximum incoming radiation and sunshine leading to better conditions for crops and trees
- Ubac slopes:
- In southern hemisphere, slopes that face South
- Lower temperatures, moister soils
- May be permanently in the shade
Soils (edaphic factors)
- Farming depends upon the depth, stoniness, water-retention capacity, aeration, texture, structure, pH, leaching and mineral content of the soil
- Clay soils:
- Heavy, acidic, poorly drained, cold
- Give higher economic returns under permanent grass
- Sandy soils:
- Lighter, less acidic, too well-drained, warmer
- More suited to vegetables and fruit
- Lime soils (chalk):
- Light in texture, alkaline
- Give high cereal yields
Global Warming
- Greenhouse effect will not only lead to an increase in temperature but also to changes in rainfall patterns
- Some places become wetter and stormier, while others become drier
Cultural (Human) Factors Affecting Farming
- Land Tenure
- Farmers may be owner-occupiers, tenants, landless laborers, or state employees on the land which they farm
- The Latifundia system:
- Land is organised into large, centrally managed estates worked by peasants who are semi-serfs
- Land is worked by the landless laborers among the peasantry who sell their labor
- Some peasant farmers in Latin America have some land of their own held under insecure tenure arrangements
- Cash-tenancy: when farmers have to give as much as 80% of their income or a fixed pre-arranged rent to landowner
- Short-term lease: overcrop and cannot afford fertiliser/maintain farm buildings
- Long-term lease: farmer may try to invest but this may lead to serious debt
- Share-cropping: Farmers have to pay, as a form of rent for occupying the land, part of their crop or animal produce to the landowner
- Plantation: variant form of the large estate system in that it is usually operated commercially, producing crops for the world market rather than local use as in latifundia
- Laborers are landless and are given a fixed wage
Inheritance Laws and the Fragmentation of Holdings
- On the death of a farmer:
- The land is divided equally between all his sons
- Dowry customs may include the giving of land with a daughter on marriage
- Led to sub-division of farms into numerous scattered small fields
- Fragmentation results in time being wasted in moving from one distant field to another
- Benefits as it can enable a wider range of crops to be grown on land of different qualities
Farm Size
- Inheritance laws tend to reduce the size of individual farms and result in subsistence level
- Large farms:
- Extensive on more marginal land
- Commercial in the EU and North America
- Animal grazing (sheep, cattle ranching); plantations and temperate cereals (wheat)
- Further from larger cities
- Areas of low population density and/or under populated
- Increasing in size and efficiency due to amalgamation and mechanisation
- Small farms:
- Intensive on flat, fertile land
- Subsistence in Asia, Latin America and Africa
- Tropical crops (rice) and market gardening
- Nearer larger cities
- Areas of high population densities or overpopulated
- Decreasing in size and efficiency due to fragmentation and hand labor
Economic Factors Affecting Farming
- Transport
- Time taken and cost of moving raw materials to farm and produce to the market
- Perishable commodities need speedy transport to the market, demanding an efficient transport network
- Items should ideally be grown as near to their market as possible
- Market
- Closely linked with transport
- Market demands depends upon the size and affluence of the market population, its religious and cultural beliefs
- Preferred diet
- Changes in taste and fashion over time and health scares influence demand
- Capital
- Most economically developed countries (supporting bank systems, private investment, government subsidies) have large reserves of readily available finance
- Has been used to build up capital-intensive types of farming such as Dairying, market gardening and mechanised cereal growing
- Increase in inputs ceases to give a corresponding increase in output
- Farmers in developing countries lack support from financial institutions and have limited capital resources
- Must resort to labor-intensive methods of farming
- Technology
- Technological developments include: New strains of seed, crossbreeding of animals, improved machinery and irrigation
- May extend the area of optimal conditions and the limits of production
The Farming System
- The farming system operates as follows:
- INPUTS
- Physical inputs: Temperature, precipitation, wind, altitude, slope, aspect, soils
- Cultural inputs: Tenure, inheritance, farm size
- Economic inputs: Transport, markets, capital, technology, governments, buildings
- Behavioral elements: Age, ambition, perception, knowledge, experience
- PROCESS
- Decision-making processes by:
- Individual farmers
- Groups of farmers
- The state
- OUTPUTS
- Patterns of land use, animal production, and crop production
- RESULTS
- Outputs exceed inputs = Profit and wealth
- Income from outputs equals cost of inputs = Stability
- Outputs less than inputs = Loss and poverty
- FEEDBACK MECHANISMS
- Negative feedback: Equilibrium is maintained through reinvestment and innovation returned to system
- Positive feedback: Disequilibrium increases, leading to stagnation and decline
- System can experience losses from natural hazards such as drought, hail, and disease
- Practical, cultural, economic and behavioral factors form the inputs
- Where farming is less developed, physical factors are usually more important but as human inputs increase, physical controls become less significant
- Can be applied to all types of farming, regardless of scale and location
Types of Agricultural Economy
- Arable, Pastoral, and Mixed Farming
- Arable farming:
- Growing of crops, usually on flatter land where soils are of a higher quality
- Pastoral farming:
- Raising of animals, usually on land which is less favorable to arable farming
- Colder, wetter, steeper, and higher land
- If carrying capacity is exceeded, the quality of the soil and grass is not maintained and then erosion and desertification may result
- Mixed farming:
- Growing of crops and the rearing of animals together
- Practiced on commercial scale in developed countries
- Reduces risk of relying on monoculture and food shortage
- Subsistence and Commercial Farming
- Subsistence farming:
- Provision of food by farmers only for their own family/the local community
- No surplus
- Self-survival = growing/rearing a wide range of crops/animals
- Lacks capital and technology
- Most vulnerable to food shortages
- Commercial farming:
- Large profit-making scale
- Farmers seek to maximize yields per hectare
- Shifting and Sedentary Farming
- Shifting cultivation:
- Seasonal movement of animals in search of pasture or moving to new agricultural plots
- Now limited to a few places where there are low population densities and a limited demand for food
- Where soils are poor and become exhausted after 3-4 years of cultivation
- Sedentary:
- Farmers remain in one place to look after their crops or to rear animals
- Extensive and Intensive Farming
- Extensive: Carried out on a large scale
- Amounts of labor and capital are small in relation to the area being farmed
- Yields per hectare and the output per farmer are both low
- Amount of labor is still limited but the input of capital may be high
- Yields per hectare are often low but the output per farmer is high
- Intensive: Relatively small scale
- Amount of labor is high, even if the input of capital is low in relation to area farmed
- Yields per hectare may be high although the output per farmer is often low
- Amount of capital is high, but the input of labor is low
- Both the yields per hectare and the output per farmer are high
World Distribution of Farming Types
- Boundaries between farming types, as drawn on a map, are usually very arbitrary
- One type of farming merges gradually with a neighboring type; there are few rigid boundaries
- Several types of farming may occur within broad area (e.g. in West Africa)
- Sedentary cultivators live alongside nomadic herdsmen
- A specialized crop may be grown locally
- A plantation crop in an area otherwise used by subsistence farmers
- Types of farming alter over time with changes in economics, rainfall, soil characteristics, behavioral patterns, and politics
- Demonstrates a close relationship between farming types and the physical environment/pattern of biomes
- It also disguises the important human-economic factor that operates at a more local level
Hunters and Gatherers
- Considered to be archaic way of life
- The original lifestyle is now largely/totally destroyed by contact with outside world
- Does not constitute a true farming type
- No animals or crop production involved
- All early societies had to rely on hunting birds and animals, catching fish, collecting berries, nuts and fruit in order to survive
- The Bushman of the Kalahari, the pygmies of Central Africa, several Amerindian tribes in the Brazilian rainforest and the Australian Aborigines
- Have varied diet resulting from their intimate knowledge of the environment
- Each group needs an extensive area from which to obtain their basic needs
Nomadic Herding
- Occurs where the climate is too extreme to support permanent settled agriculture
- Farmers become nomadic pastoralists
- Live in inhospitable environments where vegetation is sparse and climate is arid or cold
- Movement is determined by the seasonal nature of rainfall and the need to find new sources of grass for their animals.
- The Bedouin and Tuareg in the Sahara, the Rendille and Maasai in Kenya
- The indigenous Sami of Northern Scandinavia have to move when their pastures become snow covered in winter
- Fulani in West Africa may migrate to avoid tsetse fly
- Total nomadism: where the nomad has no permanent home
- Semi-nomads: may live seasonally in a village
- No ownership of land
- The animals are the source of life such as milk, meat, blood, wool, skins, dung, transport, barter
Northern Kenya: Nomadic Herders
- Rendille have learned to survive in extreme conditions
- All they need are their animals such as camels, goats, and a few cattle
- Tribe is constantly on the lookout for rain
- Way of life is changing due to land becoming overpopulated and resources overstretched because of increases in both humans and animals along with a scarecity of water and vegetation
Shifting Cultivation (Extensive Subsistence Agriculture)
- Subsistence farming was the traditional type of agriculture in most tropical countries before the arrival of the Europeans
- Still practiced by the milpa of Latin America and ladang of South-East Asia
- Areas covered are becoming smaller due to rainforest clearance
- Most energy efficient of all farming systems, operating in close harmony with the environment
Amazon Basin: Shifting Cultivation
- With the help of stone axes and machetes, the Amerindians clear small areas of 1 ha in the forest
- Main crop, manioc is planted along with yams, pumpkins, beans, tobacco, and cocoa
- The Amerindian diet is supplemented by hunting, mainly for tapirs and monkeys, fishing and collecting fruit
- No long-term adverse effect upon the environment as nutrients and organic matter can build up sufficiently to allow the land to be re-used within 25 years
- Traditional Amerindian way of life is being threatened by the destruction of the rainforest
- Also known as slash and burn agriculture
Intensive Subsistence Farming
- Involves maximum use of land with neither fallow nor any wasted land
- Yields in South-East Asia are high enough to support a high population density
- Highest-yielding crop is rice, which is grown thickly on river floodplains and river deltas
- Rice is grown on terraces cut into steep hillsides where soils have formed from weathered volcanic rock located in Indonesia and the Philippines
- The farms are often as small as 1 hectare, due to population pressure and inheritance laws
- Rice growing is labor intensive
- Construct embankments, build irrigation channels, prepare fields, plant, weed and harvest
The Ganges Valley: Intensive Subsistence Agriculture
- Rice, with high nutritional value, can form up to 40% of total diet in Northern India and Western Bangladesh
- Rice is planted as soon as the monsoon rains have flooded paddy fields
- Harvested in October when rains have stopped, land is dried out
- Where water is available for longer periods, a second rice crop may be grown
Tropical Commercial (Plantation) Agriculture
- Plantations are developed in tropical areas where rainfall is sufficient for trees to be the natural vegetation
- Monoculture approach to farming
- Cash-crops grown for export, not used or consumed locally
- Need high capital input to clear, drain and irrigate land
- Need much manual labor
- Examples: rubber, coffee, tea, palm oil, bananas, sugar cane and tobacco
Advantages:
- Higher standards of living for the local workforce
- Capital for machines, fertilizer and transport provided initially by colonial power, now the transnational corporations
- Use of fertilizers and pesticides improves output
- Increases local employment
- Housing, schools, health services and transport provided, also often electricity and water supply
Disadvantages:
- Exploitation of local workforce, minimal wage
- Cash crops grown instead of food crops leading to local population have to import foodstuffs
- Most produce is sent to Europe and North America
- Dangers of relying on monoculture resulting in fluctuations in world prices and demand
- Over use of land has led in places to soil exhaustion and erosion
Malaysia: Tropical Commercial (Plantation) Agriculture
- Estate exceeding 40 ha in size
- First plantations were coffee, but were replaced at the end of the 19th century by rubber
- Rubber is indigenous to the Amazon Basin, but some seeds were smuggled out of Brazil in 1877, and brought to Kew Gardens in London
- Trees thrive in hot, wet climates, growing best on the gentle lower slopes of the mountains forming the spine of the Malay Peninsula
- Set up in 1970's was the Federal Land Development Authority
- Clears areas of forest, divides the land into small plots, plants young rubber trees
- Provided fertilizer and pesticides, later bought and marketed the crop
- The Malaysian plantation industry is now heavily dependent on just one crop: oil palm
- Higher yields, higher prices, lower production costs and less intensive use of labor
Extensive Commercial Pastoralism (Livestock Ranching)
- Returns the lowest net profit per hectare of any commercial type farming
- Found in areas of low population density, aims to give the maximum output from minimum inputs
- Commercial sheep farming
- Central Australia, Canterbury Plains in New Zealand, Patagonia, Upland Britain
- Commercial cattle ranching
- Pampas, American Midwest, Northern Australia, Amazonia and Central America
- Cause of deforestation, desertification, soil erosion and global warming
- Takes more water and feed to produce 1kg of beef than the equivalent amount of any other food or animal product
The Pampas, South America: Extensive Commercial Pastoralism
- Areas receive 500-1200 mm rainfall a year, enough to support a temperate grassland vegetation
- During warmer months the water supply has to be supplemented from underground sources
- Grasses help to maintain fertility by providing humus when they die back
- Many improvements have been made: moisture-retaining crop grown to feed the cattle when the natural grasses die in winter
- Pedigree bulls were brought from Europe to improve the local breeds, later British Hereford cattle were crossed with Asian bulls to give a beef cow capable of living in warm, drier conditions
Extensive Commercial Grain Farming
- Cereals utilize the land use zone closer to the urban market than commercial ranching
- Grain grown commercially in American prairies, the Russian Steppes, parts of Australia, Argentina and Northwest Europe
- Productivity per hectare is low but
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