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[1]LI Li,SU Weici,GE Yinjie.Analysis on Water Conservation Capacity of Forest Ecosystem in Chongqing[J].Research of Soil and Water Conservation,2015,22(02):96-100.

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Analysis on Water Conservation Capacity of Forest Ecosystem in Chongqing

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 02 Page number: 96-100 Column: Public date: 2015-04-28

Title:: Analysis on Water Conservation Capacity of Forest Ecosystem in Chongqing

Author(s):: LI Li¹, SU Weici^1,2, GE Yinjie³; 1. College of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China;
2. Guizhou Institute of Mountain Resources, Guiyang 550001, China;
3. Geographic Information Center of Zhejiang, Hangzhou 310000, China

Keywords:: forest ecosystem; water conservation; spatial pattern change; Chongqing City

CLC:: S715

DOI:: -

Abstract:: In this paper, Chongqing was selected as research area. According to the difference of natural environment and the main MODIS vegetation type data of Chongqing from 2001 to 2010, forests in Chongqing were divided into coniferous forest, broadleaf forest, mixed conifer-broadleaf forest, shrubbery, meadow, wetland and five corresponding types of forest ecosystems. And then based on relevant indicators such as annual rainfall and crown cover rate of forest data, the water conservation capacity for different types of forest ecosystems and its development trends in the past ten years were calculated and assessed. The water conservation capacity of forest ecosystems is strong in east and weak in west, is the strongest in Wuxi County, and is the weakest in Yuzhong. Besides, the water conservation capacity of forest ecosystems is the strongest in the ecological conservation area in the northeast of Chongqing and is the weakest in the core area of city functions. The water conservation capacity of forest ecosystems in Three Gorges Reservoir is very strong, reaching up to 61 hundred million cubic meters in average. Overall, the Chongqing Municipal water conservation forest ecosystem in the decade showed a gradual upward trend, but was influenced by precipitation, significantly different each year, The annual average amount of water conserved through forest ecosystems within this region is about 103 hundred million cubic meters. The amount of water conservation for different types of forest ecosystems was the highest(129 hundred million cubic meters) in 2010 and the lowest(73 hundred million cubic meters) in 2006.

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