Method of Monitoring Soil Erosion Dynamic Change of Changchun City Based on "3S" Technology

Soil erosion is the result of every geographical environment factor′s synthesis function.To solve soil erosion problems and to improve the ecosystem environment,it is integrant to carry dynamic survey of soil erosion′s occurrence and development.To timely grasp soil erosion situations of the studying area,soil erosion rules should be summed up,reasonable soil conservation programming developed and effective administer measures adopted.The research method of applying '3S' technique to the dynamic monitoring of soil erosion was studied,two digital soil erosion maps of 1995 and 2000 were obtained and systemic analysis based on the results were carried out.This method is proved pragmatic and viable by on-the-spot field verification.