Estimation of the spatial distribution of soil erosion in the hilly area of Sichuan, China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Estimation of the spatial distribution of soil erosion in the hilly area of Sichuan, China
	Jin, Xiaoli 1,2; Cheng, Genwei1 ; Xu, C.-Y.3; Fan, Jihui1 ; Ma, Zelong 2
	2024
会议日期	October 11, 2012 - October 15, 2012
会议地点	Chengdu
关键词	USLE rainfall erosivity soil erosion rate spatial distribution
页码	228-234
英文摘要	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.
产权排序	1
会议录	Erosion and sediment yields in the changing environment (IAHS Publ. 356)
语种	英语
ISSN号	0144-7815
ISBN号	978-1-907161-33-9
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/23919]
专题	成都山地灾害与环境研究所_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
推荐引用方式 GB/T 7714	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]. 见:. Chengdu. October 11, 2012 - October 15, 2012.