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In the shelterwood strip system, regeneration felling is carried out in strips. What is the general arrangement of these strips in relation to the wind direction?
In the shelterwood strip system, regeneration felling is carried out in strips. What is the general arrangement of these strips in relation to the wind direction?
- Independently of the wind direction.
- Successively against the wind direction. (correct)
- Parallel to the wind direction.
- At a 45-degree angle to the wind direction.
What is a primary objective of employing the shelterwood strip system in silviculture?
What is a primary objective of employing the shelterwood strip system in silviculture?
- To simplify logging operations.
- To maximize timber yield in the short term.
- To enhance the aesthetic appeal of the forest.
- To protect against the wind. (correct)
In a shelterwood strip system, what is the correct order of felling operations in successive strips?
In a shelterwood strip system, what is the correct order of felling operations in successive strips?
- Secondary felling, final felling, seedling felling.
- Final felling, secondary felling, seedling felling.
- Seedling felling, secondary felling, final felling. (correct)
- Final felling, seedling felling, secondary felling.
After regeneration is established in the felled strips during the shelterwood strip system, which type of felling is typically carried out?
After regeneration is established in the felled strips during the shelterwood strip system, which type of felling is typically carried out?
In the context of the shelterwood strip system, what happens when a second strip requires more light?
In the context of the shelterwood strip system, what happens when a second strip requires more light?
In the shelterwood strip system, after final felling is completed in strip 1, which activity is undertaken in strip 3?
In the shelterwood strip system, after final felling is completed in strip 1, which activity is undertaken in strip 3?
What is a notable disadvantage associated with the shelterwood strip system?
What is a notable disadvantage associated with the shelterwood strip system?
Wagner's blender saumschlag system involves regeneration felling in narrow strips. What is the general direction of these strips?
Wagner's blender saumschlag system involves regeneration felling in narrow strips. What is the general direction of these strips?
What is the main benefit of Wagner's blender saumschlag method?
What is the main benefit of Wagner's blender saumschlag method?
In the strip and group system, how does the work progress regarding the groups?
In the strip and group system, how does the work progress regarding the groups?
Flashcards
Shelterwood Strip System
Shelterwood Strip System
A silvicultural system where regeneration felling is done in strips, arranged successively against the wind direction.
Main objective of shelterwood strip system
Main objective of shelterwood strip system
To protect against wind.
Seeding felling
Seeding felling
Carried out in a narrow strip on one side of compartment.
Secondary felling
Secondary felling
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Successive strip
Successive strip
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Final felling
Final felling
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Wagner's blender saumschlag
Wagner's blender saumschlag
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Strip and group system
Strip and group system
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Disadvantages of strip systems
Disadvantages of strip systems
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Study Notes
Shelterwood-Strip System
- This a silvicultural system
- Regeneration felling occurs in strips
- The strips are arranged successively from one side of the compartment to the other
- The strips are usually arranged against the direction of the wind
- The main objective is to protect against the wind
Felling Pattern
- Seeding felling is carried out in a narrow strip on one side of the compartment
- Secondary felling is done after regeneration is established in the felled strips
- A successive strip is selected where seeding felling is carried out
- Secondary felling is carried out in the second strip when it needs more light
- Final felling is carried out in strip 1, and seeding felling is done in strip III
- The sequence continues until it reaches the next end of the compartment
- The width of the strip may vary from 20-30 m or more
Disadvantages
- Laying out strips can be difficult
- Execution of felling is difficult
- Logging and transportation Logistics can become difficult
- Protection against grazing and fire is difficult
Wagner’s Blender Saumschlag
- This is a silvicultural system
- Regeneration felling occurs in narrow strips extending in east-west direction
- The strips advance from north to south
- This provides sideward protection for regeneration from the sun
- Especially useful for subtropical and tundra regions
Other Considerations
- The pattern of felling is not prescribed and may vary according to local conditions
- First clear felling is done on the northern side
- Felling is usually carried out from east to west
- Strip width should be half the height of standing trees
- Secondary and final felling is similar to the shelterwood strip system
- This system will create an even aged crop along the east-west direction
- This system creates an uneven aged crop if ran north to south
- It gives a sloping profile to the canopy
- This system is not applicable under tropical conditions
Strip and Group System
- This is a silvicultural system where felling is done in strips conforming to the group system
- First seeding felling is done in an area where advance growth is present
- Secondary felling is carried out in the groups when regeneration comes up well
- Seeding felling is started in the adjacent strip simultaneously
- Work progresses until groups merge with each other
- The strips should progress against the direction of the wind
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