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[1]CAO Jia-yun,YANG Qin-ke,WANG Cheng,et al.Extraction and Analysis of LS Factor at County Scale——Taking Changwu County as an Example[J].Research of Soil and Water Conservation,2012,19(02):7-10.

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Extraction and Analysis of LS Factor at County Scale——Taking Changwu County as an Example

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 02 Page number: 7-10 Column: Public date: 2012-04-20

Title:: Extraction and Analysis of LS Factor at County Scale——Taking Changwu County as an Example

Author(s):: CAO Jia-yun¹, YANG Qin-ke^1,2, WANG Cheng¹, CHOU Shu-ren¹; 1. Department of Urban and Environment, Northwest University, Xi’an 710127, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China

Keywords:: LS extracting; regional soil erosion; DEM

CLC:: S157

DOI:: -

Abstract:: It is essential to calculate LS factor for soil erosion assessment and mapping based on slope models at watershed and regional scale,such as USLE.Based on the LS factor extraction work in the experimental counties of the Fourth National Soil Erosion Survey,this paper took Changwu County as an example and summarized its main technical links,key technologies and workflow.From the statistical and spatial characteristics of extracted slope,slope length and LS factor,the extracted factors can basically reflect the plateau,plateau slopes,modern gully and plain ground features of this area.The result of the LS factor extraction had been assessed and analyzed too.It shows that LS factor can be rationally extracted based on our prior results on theory and technology,and the extracted factor can meet the need of soil erosion assessment at macro-scale.

References:: [1] 杨勤科,李锐,刘咏梅.区域土壤侵蚀普查方法的初步讨论[J].中国水土保持科学,2008,6(3):1-7.
[2] Renard K G,Foster G R,Weesies G A.Predicting Rainfall Eosion by Water: A Guide to Conservation Planning with the Revised Universal Soil Loss Equation (RUSLE) [M].Washington D C: USDA Agric.Handb,1997.
[3] Wischmeier W H,Smith D D.Predicting Rainfall Eosion Losses from Cropland East of the Rocky Mountains: A Guide for Soil and Water Conservation Planning[M].Washington D C: USDA Agric.Handb.,1978.
[4] 杨勤科,郭伟玲,张宏鸣,等.基于GIS和DEM的流域坡度坡长因子计算方法[J].水土保持通报,2010,30(2):203-206.
[5] 汪邦稳,杨勤科,刘志红,等.基于DEM和ArcGIS的修正通用土壤流失方程的地形因子值提取[J].中国水土保持科学,2007,5(2):18-23.
[6] 吴东亮,刘鹏举,唐小明.基于GIS的栅格化坡面径流路径模拟与LS值计算[J].北京林业大学学报,2001,23(5):10-14.
[7] 张照录,崔继红.基于栅格GIS 土壤侵蚀地形因子的提取算法[J].计算机工程,2006,32(5):226-228.
[8] Williams J R,Berndt H D.Determining the Universal Soil Loss Equation’s Length-slope Factor for Watersheds[M] Ankeny I A.Erosion and Solid Matter Transport in Inland Waters,IAHS-AISH Publication No.122,1977.
[9] Moore I D,Wilson J P.Length-slope factors for the Revised Universal Soil Loss Equation:Simplified method of estimation[J].Journal of Soil and Water Conservation,1992,47(5):423-428.
[10] Wilson J P.Estimating the topographic factor in the universal soil loss equation for watersheds[J].Journal of Soil and Water Conservation,1986,41(3):179-184.
[11] Desmet P,Grovers G.GIS-based simulation of erosion and deposition patterns in an agricultural landscape: A comparison of model results with soil map information[J].Catena,1995,25(1/4):389-401.
[12] Desmet P J.A GIS procedure for automatically calculting the USLE LS factor on topographically complex landscape units[J].Journal of Soil and Water Conservation,1996,51(5):427-433.
[13] Hickey R,Smith A,Jankowski P.Slope length calculations from a DEM within ARC/INFO grid[J].Computers,Environment and Urban Systems,1994,18(5):365-380.
[14] Hickey R.Slope angle and slope length solutions for GIS[J].Cartography,2000,29(1):1-8.
[15] Van Remortel R,Hamilton M,Hickey R.Estimating the LS factor for RUSLE through iterative slope length processing of digital elevation data[J].Cartography,2001,30(1):27-35.
[16] Van Remortel R,Maichle R W,Hickey R J.Computing the LS factor for the Revised Universal Soil Loss Equation through array-based slope processing of digital elevation data using a C⁺⁺ executable[J].Computers & Geosciences,2004,30(9/10):1043-1053.
[17] 张宏鸣,杨勤科,郭伟玲,等.基于GIS的区域LS因子算法及实现[J].计算机工程,2010,36(9):246-248.
[18] Hutchinson M.ANUDEM Version 5.2 [EB/OL].[2011-06-15].http://fennerschool.anu.edu.au/research/publications/software-datasets/anudem.
[19] 古云鹤,杨勤科,罗仪宁,等.突变地形特征在DEM上的表达[J].水土保持研究,2011,18(2):174-179.
[20] 唐克丽.中国水土保持[M].北京:科学出版社,2004.

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