Soil Erosion Actuality and Its Synthesis Prevention Countermeasures in China
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Soil Erosion Actuality and Its Synthesis Prevention Countermeasures in China
Vol. 16, Issue 1, Pages: 40-43(2002)
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CLC:TP78;S157.1
Published:2002
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ZHAO Xiao li. Soil Erosion Actuality and Its Synthesis Prevention Countermeasures in China[J]. 2002, 16(1): 40-43.
DOI:
ZHAO Xiao li. Soil Erosion Actuality and Its Synthesis Prevention Countermeasures in China[J]. 2002, 16(1): 40-43.DOI:
Soil Erosion Actuality and Its Synthesis Prevention Countermeasures in China
摘要
阐述应用 RS和 GIS技术相结合进行全国土壤侵蚀遥感调查的方法和流程
建立全国土壤侵蚀分类系统和强度分级指标
采用全数字作业的人机交互判读分析方法编制全国土壤侵蚀图
依靠 GIS技术建立全国土壤侵蚀属性数据库和图形数据库 ;并对调查结果进行全面深入的分析
揭示出其分布规律及特点 :全国土壤侵蚀从面积和强度上都是由东向西递增
并存在集中连片分布。最后针对其特点提出了综合防治的对策
Abstract
This paper expounds method and order of soil erosion survey by remote sensing and GIS in China. Classify system and intensity grade index of soil erosion are founded and map of soil erosion intensity in China. We compile the digital map of soil erosion by using man computer interactive interpreting and built soil erosion spatial database based on GIS; then we make a comprehensive and deep analysis for the survey results. These results show the distribution characteristics and rules of soil erosion. That is the areas and intensity of soil erosion gradually increase from east to west in China and focus some continuous area. Finally
we suggest some synthesis countermeasures for treating soil erosion