Estimation of the spatial distribution of soil erosion in the hilly area of Sichuan, China
语种英语
Jin, Xiaoli1,2; Cheng, Genwei1; Xu, C.-Y.3; Fan, Jihui1; Ma, Zelong2
2012
会议录名Erosion and sediment yields in the changing environment (IAHS Publ. 356)
会议录编者/会议主办者IAHS
页码228-234
会议名称IAHS international commission on continental erosion symposium
会议日期October 11, 2012 - October 15, 2012
会议地点Chengdu
会议举办国China
产权排序1
摘要The hilly area of Sichuan (China) has suffered from soil erosion as a result of the intensive agriculture and steep topography. Many different methods have been used for the estimation of soil erosion and no clear consensus about erosion rates and subsequent sediment delivery ratios (SDR) has been reached. In this study, the Universal Soil Loss Equation (USLE) with different parameter estimation methods was applied to two river basins (i.e. Weichenghe (WCH) and Lizixi (LZX)) with the help of G1S techniques. The results were compared with those of previous studies based on remote sensing, erosion plots or the137Cs technique. The main results can be summarized as: (1) different rainfall erosivity estimation methods generate vastly different results; (2) using two-dimensional slope length produces higher soil erosion rate estimates and lower SDRs than the conventional approach in USLE; (3) the average annual soil erosion rates for WCH and LZX were estimated at 706 t km-2year-1and 3040 t km-2year-1, respectively, and the corresponding sediment delivery ratios at 0.27 and 0.38; and (4) the high erosion rates reflect the high altitude and intensive agricultural land use. Copyright © 2012 IAHS Press.
关键词USLE rainfall erosivity soil erosion rate spatial distribution
ISBN号978-1-907161-33-9
ISSN号0144-7815
收录类别EI
EI收藏号Accession number:20133616706428
文献类型会议论文
条目标识符http://ir.imde.ac.cn/handle/131551/24079
专题山地表生过程与生态调控重点实验室
通讯作者Jin, Xiaoli
作者单位1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China;
2.Sichuan Hydraulic Science Research Institute, Chengdu 610072, China;
3.Department of Geosciences, University of Oslo, Norway
第一作者单位中国科学院水利部成都山地灾害与环境研究所
通讯作者单位中国科学院水利部成都山地灾害与环境研究所
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Jin, Xiaoli,Cheng, Genwei,Xu, C.-Y.,et al. Estimation of the spatial distribution of soil erosion in the hilly area of Sichuan, China[C]//IAHS,2012:228-234.
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