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[1]WANG Yan-zai,GOU Shi-wei,ZHANG Shu-lin.Analysis of Rainfall Erosivity Trend and Abrupt Changes in Three Gorges Reservoir Area (Chongqing Section)[J].Research of Soil and Water Conservation,2012,19(03):1-6.

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Analysis of Rainfall Erosivity Trend and Abrupt Changes in Three Gorges Reservoir Area (Chongqing Section)

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 03 Page number: 1-6 Column: Public date: 2012-06-20

Title:: Analysis of Rainfall Erosivity Trend and Abrupt Changes in Three Gorges Reservoir Area (Chongqing Section)

Author(s):: WANG Yan-zai¹, GOU Shi-wei², ZHANG Shu-lin¹; 1. College of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China;
2. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China

Keywords:: Three Gorges Reservoir Area (Chongqing section); rainfall erosivity; non-parametric Mann-Kendall statistical test

CLC:: S157

DOI:: -

Abstract:: This paper used the non-parametric Mann-Kendall statistical test to deal with the analysis of rainfall erosivity trend and abrupt change (1955-2010) in Three Gorges Reservoir area (Chongqing section). The results summarized as: (1) from 1955 to 2010, annual rainfall erosivity in the study area did not change significantly, compared to 1975-1994, there was little change in annual rainfall erosivity potential of 1994-2010, but summer rainfall erosivity increased significantly, we should pay attention to strengthening soil erosion control in the summer; (2) the abrupt change of annual rainfall erosivity mostly started in 1967, and the abrupt change of spring and fall rainfall erosivity started in the end of 1950s; (3) compared to the rainfall erosivity trend, there was different between Fengjie,Wanxian station and Fuling, Shapingba station, but compared to the rainfall erosivity abrupt changes, there was difference between Fengjie station and other three stations.

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