层次分析结构图——分类图

C5

C3

C22

A1

Selection value

Water conservation

C2

Timber

B2

Indirect use value

C31

Non-timber forest produc-ts

C12

value of natural heritage to future

C41

Use value

Target layerA

Event LayerC

Value embodied in its own existence

C21

C1

Bequest value

C4

C11

Value for future direct or indirect use

Guideline layerB

B1

Conservation of soil

C51

Direct use value

Non-use value

Total economic value of forest ecosystems

Existence value