Silvicultural Systems
Classification
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Silviculture systems and its scope., Slides of Silviculture
Silviculture systems and its scope and objectives.
Typology: Slides
2021/2022
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Silvicultural Systems
Classification
Application of Silvicultural Systems
Main Considerations
- (^) General framework of a scheme
- (^) Division of area
- (^) Allotment of areas for felling
- (^) Regulation of yield
All basically questions of forest management
Silvicultural Systems
- (^) Evolved in Europe
- (^) All Foresters / Forestry Scientists
- (^) Should know these
- (^) Indian Forestry has modified these at times
- (^) Scope for modifications in India
Classification
- (^) Various Systems have been proposed
- (^) There are practices of pre 19th^ century
- (^) Most agree with the basis laid down
- (^) By RS Troup
We shall follow this for our purpose
High Forest Systems – Crops of Seedling origin
Felling & Regeneration, for the time being, concentrated
on “part of the forest area only”
A
B
Felling & Regeneration
distributed continuously over the whole area:
crop wholly uneven-aged = “Selection System”
Accessory Systems
Arising out of other systems
C
I
Felling & Regeneration, for the time being, concentrated
on “part of the forest area only”
A
Old crop cleared by one single felling –even-aged crop
“Clear Cutting / Felling System”
System of Successive Regeneration Felling
Old crop cleared two / more successive fellings
Crop more or less even aged / uneven-aged
“Shelter-wood Systems”
Regeneration fellings distributed
Over whole compartment / sub-compartment
Canopy opening even: young crop more or less even-aged and “uniform” “Uniform System” Opening of the canopy by scattered gaps: Young crop more or less even-aged “Group System” Opening of canopy irregular and gradual: Young crop somewhat uneven-aged “Irregular Shelter-wood System”
a
i
ii
iii
Regeneration fellings confined to
Certain portions of the compartment /
sub-compartment
b
Felling in strips “Strip System” ( Various ) Felling starts in internal lines Advancing outward in wedge formation “Wedge System”
i
ii
Coppice Systems – Crops, in part, of vegetative origin II
Crop consisting entirely of vegetative shoots
A
Crop removed by clear felling, even aged “Coppice System” Only a portion of shoots cut at each felling “Coppice Selection System”
Crop consisting partly of vegetative shoots Partly of trees, generally of seedling origin “Coppice with Standards System”
B
I High Forest Systems I A 1. Clear Felling System I A 2. a ) ( i ) Uniform System I A 2. a ) ( ii ) Group System I A 2. a ) ( iii ) Irregular Shelter-wood System I A 2. a ) ( i ) Strip System I A 2. b ) ( ii ) Wedge System
I B
Selection System I C 1. Two Storied High Forest I C 2. High Forest with Standards II Coppice Systems II A 2. Coppice Selection System
II B
Coppice with Standards System
II A 1.
Coppice System