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| Benefits of Forest Water Conservation and Its Economical Value Evaluation in Upper Reaches of Yangtse River |
| Cheng Genwei1,Shi Peili2 |
| 1. Institute of Mountain Hazards and Environment, CAS, 610041, Chengdu; 2. Institute of Geography Science and Resource, CAS, 100101, Beijing: China |
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Abstract In order to enrich value quantitative study of forest ecological system function, impersonally appraise eco-conservation benefits in west-south area of China, based on difference of natural geographical environmental condition, the upper reaches of Yangtse River is divided into 6 physical geographical zones, including dark-coniferous forest, conifer-broad mixed forest, broad forest, cash forest, bamboo forest, bush lands. The capacity of forest water conservation is calculated according to precipitation and runoff characteristic parameters in the area. The principle of “Alternating Engineering and Shade price” is applied to estimate the economic value of water conservation caused by forest ecological system. The results show that the annual water conservation storage caused by forest ecological system in upper reaches of Yangtse River is 1288×10 8m3, which mainly concentrated in high mountainous gorge area, and its economic values is 432×108Yuan.
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Received: 04 June 2004
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