中国农业科学（英文版）2008，Vol.7Issue(6)：746-753,8.
GIS-Based Assessment of Soil Erosion at Nihe GOU Catchment
GIS-Based Assessment of Soil Erosion at Nihe GOU Catchment
摘要
Abstract
The paper discussed theory and methodologies of soil erosion assessment and established an implementation process according to USLE factors combining with thematic paper maps and DEMs. Factors of USLE-R, K, S,L, P and C were adapted to the test area, the Nihe Gou catchment in Chunhua County of Shaanxi Province, China. Afterwards the parameters of the USLE were evaluated individually and merged in order to calculate the amount of soil loss over the corresponding years, 1977 and 2003. In order to derive all necessary factors a TIN was generated out of a paper contour map. Furthermore, thematic paper maps and climate data completed the source of information for the implementation. The quantitative methodologies integrated with GIS were applied during the process. The verification of the result was performed comparing the real world situation at the test area with the resulting thematic maps. It shows these principles and methodologies were reasonable and feasible and can provide basis or reference for further areas of the Chinese Loess Plateau.关键词
USLE/DEM/TIN/soil and water conservationKey words
USLE/DEM/TIN/soil and water conservation分类
农业科技引用本文复制引用
ZHANG Qing-feng,WANG Li ,WU Fa-qi..GIS-Based Assessment of Soil Erosion at Nihe GOU Catchment[J].中国农业科学（英文版）,2008,7(6):746-753,8.基金项目
The research was funded by the National Natural Science Foundation of China (40501031), and the University Research Project (08080115), administrated by the Northwest A & F University of China. （40501031）
