GIS-Based Assessment of Soil Erosion at Nihe GOU Catchment

ZHANG Qing-feng; WANG Li; WU Fa-qi

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GIS-Based Assessment of Soil Erosion at Nihe GOU Catchment

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摘要

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.

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《农业科学学报（英文版）》 |2008年第6期|746-753|共8页
作者
ZHANG Qing-feng; WANG Li; WU Fa-qi;
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作者单位

Center for RS-GIS, School of Resources and Environment, Northwest A & F University, Yangling 712100, P. R. China;

Center for RS-GIS, School of Resources and Environment, Northwest A & F University, Yangling 712100, P. R. China;

State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sc;

Center for RS-GIS, School of Resources and Environment, Northwest A & F University, Yangling 712100, P. R. China;

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原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
USLE; DEM; TIN; soil and water conservation;

机译：USLE;DEM;TIN;水土保持;

GIS-Based Assessment of Soil Erosion at Nihe GOU Catchment

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