Upload
vivek-srivastava
View
131
Download
4
Embed Size (px)
Citation preview
What is a Silvicultural system? A silvicultural system is the process of
tending, harvesting and regenerating a forest.
Different objectives in forest management (e.g. conservation in an ancient semi-natural woodland vs. production of timber from a conifer plantation) are likely to lead to the adoption of different silvicultural systems.
SYSTEMS
Generally divide into 2 main groups
HIGH FOREST SYSTEMS
COPPPICE SYSTEMS
CLASSIFYING SYSTEMS
• There are many different types of silvicultural systems
• A broad classification can be made based on the pattern of regeneration and how the tree canopy is removed.
Generally forests managed using clear felling and shelterwood systems tend to be even-aged (only possess one or two canopy strata) and those managed using selection systems are uneven-aged (have three or more canopy strata).
Silvicultural systems
Uniform opening of the canopy for regeneration purposes
Opening up of groups of advance regeneration – comparitively short regen period
Opening up of crop in narrow coupes
‘Rolling system’
Complete removal of trees and artificial regeneration.
Clearfelling
Uniform shelterwood system
Strip shelterwood
COPPICE SYSTEMS
Coppice Coppice with standards
HIGH FOREST SYSTEMS
CLEAR CUT SYSTEMS - old crop felled in single felling Usually artificial regeneration
Crop felled in 2 or more regeneration fellingsSHELTERWOOD SYSTEMSSELECTION SYSTEMS
CLEAR CUT
Shelterwood systems
Uniform shelterwood system
Shelterwood systems
Uniform Group Irregular Strip