摘要
以松花江流域为例,在RS,GIS技术的支持下,借助不同时期Landsat TM影像数据,研究1995,2005年土壤侵蚀时空格局及其动态变化。结果表明:水力侵蚀是松花江流域土壤侵蚀的主要形式,研究区域以微度侵蚀为主,所占比例分别为68.98%和68.32%,研究区域总体水土保持良好;微度侵蚀保留率最大,强度侵蚀的转出率最大;研究土壤侵蚀动态变化有助于开展流域水土流失治理和生态安全保护。
Based on the RS and GIS,with the support of remote sensing image of Landsat TM in different period,the region of Songhuajiang watershed was taken to study the spatial pattern and its changes of soil erosion from 1995 to 2005. The results shown that：the water erosion was the main form of soil erosion in Songhuajiang watershed,the weak erosion of study region was main, the proportion of weak erosion was 68.98% and 68.32% , which mean that the regional general soil - water conservation was good, the weak erosion had the highest interconversion and the intensive erosion had the highest retention rates;studied the dynamic changes of soil erosion was useful to improve the soil water conservation and protect the ecological safety.
出处
《测绘与空间地理信息》
2010年第2期1-3,10,共4页
Geomatics & Spatial Information Technology
基金
黑龙江省教育厅项目(11531294)
黑龙江大学青年基金项目(QL200640)
黑龙江省教改项目(09B055)资助
关键词
土壤侵蚀
RS
动态变化
流域
soil erosion
RS
dynamic, changes
watershed
