silvicultural systems

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Page 1: Silvicultural systems
Page 2: Silvicultural systems

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.

Page 3: Silvicultural systems

SYSTEMS

Generally divide into 2 main groups

HIGH FOREST SYSTEMS

COPPPICE SYSTEMS

Page 4: Silvicultural 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.

Page 5: Silvicultural systems

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).

Page 6: Silvicultural systems

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

Page 7: Silvicultural systems

COPPICE SYSTEMS

Coppice Coppice with standards

Page 8: Silvicultural systems
Page 9: Silvicultural systems
Page 10: Silvicultural systems

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

Page 11: Silvicultural systems

CLEAR CUT

Page 12: Silvicultural systems

Shelterwood systems

Page 13: Silvicultural systems

Uniform shelterwood system

Page 14: Silvicultural systems

Shelterwood systems

Uniform Group Irregular Strip