遥感技术在土壤侵蚀调查中的应用进展

Application Progress of Remote Sensing Approaches in Soil Erosion Investigation

运用遥感技术进行土壤侵蚀调查是目前环境领域研究的热点问题之一。作为土壤侵蚀最严重的国家之一,自20世纪70年代以来我国就开始利用遥感技术进行土壤侵蚀的调查研究。该研究在综述国内外运用遥感技术研究土壤侵蚀的基础上,从目视判读法、经验统计模型法、核示踪法和指数提取法4个方面概述了不同遥感方法在土壤侵蚀调查中存在的优缺点,并且结合当前遥感技术在土壤侵蚀调查中存在的问题,指出未来研究的重点。

tiemote sensing technology to momtor soil erosion is one of hot spots in environment field. As one of the severest country, since 1970s, China has already utilized remote sensing to monitor soil erosion. On the basis of reviewing remote sensing technology to monitor soil erosion at home and abroad, the advantages and disadvantages of different remote sensing methods in soil erosion monitoring were elaborated from 4 aspects of visual interpretation, vegetation index derivation, experience statistical model and nuclear tracer. Combing with the existing problems, the key of future research was pointed out.