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[1]TIAN Yao-wu,HUANG Zhi-lin,XIAO Wen-fa,et al.Effects of Conversion Cropland to Forest on Values of Ecosystem Services Based on RS and GIS in Heigou Watershed of Three Gorges Reservoir Area[J].Research of Soil and Water Conservation,2010,17(03):97-100.

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Effects of Conversion Cropland to Forest on Values of Ecosystem Services Based on RS and GIS in Heigou Watershed of Three Gorges Reservoir Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 03 Page number: 97-100 Column: Public date: 2010-06-20

Title:: Effects of Conversion Cropland to Forest on Values of Ecosystem Services Based on RS and GIS in Heigou Watershed of Three Gorges Reservoir Area

Author(s):: TIAN Yao-wu^1,2, HUANG Zhi-lin², XIAO Wen-fa², ZHAO Lian-jiang³, ZHAO Fu-jun³, AI Xiao-ying³; 1. Forestry College, He’nan University of Science and Technology, Luoyang, He’nan 471003, China;
2. Key Laboratory of Forest Ecology and Environment, State Forestry Administration China, Research Institute of Forest Ecology, Environment and Protection, Academy of Forestry, Beijing 100091, China;
3. Yuzhou Water Resources Bureau, He’nan Province, Xuchang, He’nan 461000, China

Keywords:: conversion cropland to forest; Three Gorges Reservoir area; ecosystem service value

CLC:: X171.4

DOI:: -

Abstract:: Land is the carrier of various terrestrial ecosystems, the change of land use cover would impact the structure and service function of ecosystem unavoidably. Several environmental protection policies have been implemented to increase the function of ecosystem in China. The objective of this study is to evaluate the long-term impact of implementation of the ‘conversion cropland to forest policy’ (CCFP) on the ecosystem service value at watershed level. With referring to the table of Chinese land ecosystem services value of unit area and analyzing the data of there scenarios of CCFP based on the RS and GIS in Heigou watershed of Three Gorges Reservoir area, changes of the values of ecosystem services caused by CCFP were estimated.There scenarios are constructed representing different patterns of conversion from cropland to forest under various conditions set by the CCFP. Scenario A represented the baseline, i.e., the cropland and forest area conditions before the implementation of CCFP. In scenario B and C, hillside cropland with slope larger than 25° and 15° was substituted by forest, respectively. The results showed that, comparing to Scenario A, the area of forest of Scenario B increased by 66.9%, and the areas of cropland no use land decreased by 20.3 and 34.8% respectively. The value of ecosystem service increased by 18.3%; The area of forest of Scenario C increased by 149.9%, the areas of cropland no use land decreased by 51.2% and 49.3% respectively. The value of ecosystem service increased by 38.7%. Values ecosystem services increased mainly resulted from the implementation of CCFP. It confirmed the benefits of implementing CCFP in increasing ecosystem service value by increasing forest area in mountainous areas.

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