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[1]REN Jing,WANG Yu-kuan,XU Pei,et al.Analysis of Water Erosion under Different Precipitation in the Upper Reaches of Yangtze River Basin[J].Research of Soil and Water Conservation,2011,18(04):1-4.

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Analysis of Water Erosion under Different Precipitation in the Upper Reaches of Yangtze River Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 04 Page number: 1-4 Column: Public date: 2011-08-20

Title:: Analysis of Water Erosion under Different Precipitation in the Upper Reaches of Yangtze River Basin

Author(s):: REN Jing^1,2, WANG Yu-kuan¹, XU Pei¹, FU Bin¹, CAI Xiong-fei^1,2; 1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Keywords:: the upper reaches of Yangtze River Basin; soil erosion; precipitation

CLC:: S157.1

DOI:: -

Abstract:: Based on daily rainfall data recorded by 135 meteorological stations from 1961 to 2009 and multi-year average precipitation data of 225 counties in the Upper Yangtze River Basin, combined with water erosion distribution map calculated by USLE model, the relationship between precipitation and water erosion in the Upper Yangtze River Basin was analyzed through using the spatial analysis function on GIS software. The results show that water erosion accounts for 78% of the whole soil erosion;for the distribution of water erosion and precipitation, although there is significant difference in local area, they are all increasing from west to east. The source region and northwest of Sichuan, where multi-year average precipitation is less than 900 mm, occurs micro-degree water erosion mainly. In central Sichuan, just as uneven precipitation distribution, water erosion is uneven. In the junction of Sichuan and Shaanxi, Sichuan and Gansu, where precipitation grade is 4 to 5 and north of Chongqing where precipitation grade is 7 to 8, water erosion is serious, intensity erosion occurs mainly;middle intensity erosion dominates the region of the northwest of Yunnan, southwest of Chongqing and Yichang of Hubei, where precipitation grade is 7 to 8.The soil erosion index reaches the maximum value (160.5) in precipitation grade 8.This result is close to 2000 Remote Sensing interpretation of soil erosion, revealing the soil erosion distribution features and causes under different precipitation condition in the Upper Yangtze River.

References:: [1] 杨骁。退耕还林与长江上游水土流失治理研究[J].人民长江, 2010, 41(13):105-107.
[2] 崔鹏, 张小林。中国水土流失防治与生态安全:长江上游及西南诸河区卷[M].北京:科学出版社, 2009.
[3] 柴宗新。试论土地侵蚀[J].山地研究, 1996, 14(2):117-121.
[4] 章文波, 谢云, 刘宝元。中国降雨侵蚀力空间变化特征[J].山地学报, 2003, 21(1):33-40.
[5] Wischmeier W H, Smith D D.Predicting rainfall erosion losses:Aguide to conservation planning[Z].U.S.Dep.Agric.Handb., No.537, 1978.
[6] Kinnell P I A.Event soil loss, runoff and the Universal Soil Loss Equation family of models:A review[J].Journal of Hydrology, 2010, 385:384-397.
[7] 唐克丽。中国水土保持[M].北京:科学出版社, 2004.
[8] 陈国阶。长江上游水土流失主要成因及防治政策[J].农村生态环境, 2000, 16(3):5-8.
[9] 弓小平, 程勖。协克里格法在空间插值中的研究应用[J].西北大学学报:自然科学版, 2009, 39(4):533-537.
[10] Ren Jing, Wang Yukuan, Fu Bin, et al, Soil conservation assessment in the Upper Yangtze River Basin Based on In VEST Model[C] // ISWREP 2011.Xi’an:IEEE, 2011:1833-1836.
[11] 张增祥, 赵晓丽, 陈晓峰, 等。基于遥感和地理信息系统(GIS)的山区土壤侵蚀强度数值分析[J].农业工程学报, 1998, 14(3):77-83.
[12] 杨存建, 刘纪远, 张增祥。重庆市土壤侵蚀与其背景的空间分析[J].水土保持学报, 2000, 14(3):84-87.

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