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[1]ZHANG Biao,DONG Dun-yi,ZHANG Can-qiang,et al.The Benefit Assessment on Reduction of Soil Erosion and Nutrient Loss from the Forests in Anji County of Taihu Basin[J].Research of Soil and Water Conservation,2011,18(06):111-114,118.

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The Benefit Assessment on Reduction of Soil Erosion and Nutrient Loss from the Forests in Anji County of Taihu Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 06 Page number: 111-114,118 Column: Public date: 2011-12-20

Title:: The Benefit Assessment on Reduction of Soil Erosion and Nutrient Loss from the Forests in Anji County of Taihu Basin

Author(s):: ZHANG Biao¹, DONG Dun-yi², ZHANG Can-qiang¹, YANG Yan-gang¹, PAN Chun-xia², WANG Bin³; 1. Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China;
2. Anji Forestry Bureau of Zhejiang, Anji, Zhejiang 313300, China;
3. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang, Zhejiang 311400, China

Keywords:: forest; soil erosion; nutrient control; benefit assessment; Taihu Basin; Anji County

CLC:: S157.1;S714.7

DOI:: -

Abstract:: The non-point source pollution due to nutrient input coming from soil erosion has significant impact on the water body eutrophication of Taihu Lake Basin. To deeply realize and fully utilize the role of forest in reducing nutrient loss increasingly becomes an urgent task, based on the forest inventory data in Anji County(2007), the amounts of soil nutrient fixation(including TN and TP) of forests were calculated by means of the soil erosion modulus and nutrient contents, and the monetary values of protecting the water bodies against nutrients input from soil erosion were estimated by using the river load and degradation ratios as well as the regional compensation standards of environmental resources. The result showed that the forests in Anji County could reduce 1.51×10⁶ Mg/a or 11 Mg/(hm²·a) of soil erosion, decrease the nutrient losses of 1 409 t for total nitrogen and 577 t for total phosphorus, which avoid 824 t of total nitrogen and 410 t of total phosphorus flowing into the rivers. These forests should be compensated 92.55 million Yuan/a or 688 Yuan/(hm²·a), which is 15 times as the current ecological compensation of 47 Yuan/(hm²·a). The results of this study can contribute to the understanding on the role of forest in water environment management in Taihu Lake Basin and the protection and utilization of forest resources.

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