Quantitative analysis on soil erosion based on 3S technology
(1.Xuzhou Normal University, Xuzhou 221009, China2.Hebei Polytechnic University, Tangshan 063009, China3.Beijing Forestry University, Beijing 100083, China)
Abstract: The quantitative analysis on soil erosion is very significant for macro-decision of soil loss, for quick control of natural disasters and for system of periodical report. Based on the research of 3S(GPS, GIS and RS), the special information can be obtained by GPS or RS. Digital elevation model can be formed by GIS software, and at the same time, we can get some vector graph, such as landuse, vegetation type and soil type. Then the soil erosion of research area was calculated by USLE. The methods and techniques were discussed, including how to carve up polygons, how to capture the values of factors and how to differentiate the erosion intensity.
Key words: soil erosion； USLE； GPS； GIS； RS