黄河流域甘肃片土壤侵蚀遥感普查的初步分析  

A Preliminary Analysis on Soil Erosion ofYellow River Basin in Gansu

作　　者：吴亚宁[1] 张虎林[1] 杨丽萍[1] 

机构地区：[1]黄河水利委员会天水水土保持科学试验站,甘肃天水741000

出　　处：《遥感技术与应用》2002年第6期398-401,共4页Remote Sensing Technology and Application

摘　　要：以 TM影像为主要信息源 ,借助 GIS(地理信息系统 )软件 ARC/INFO作技术支撑 ,对黄河流域甘肃片土壤侵蚀现状进行普查。通过提取影响土壤侵蚀主导因子并综合分析确定甘肃片土壤侵蚀类型、分布及强度。The soil erosion of the Yellow River Basin in Gansu is very serious. The main type is water erosion. The frozen thaw erosion and wind erosion just distribute in part of regions. The main driving factors are natural factors and manmade factors. The natural factors include loose structure of the regional soil, centralized rainfall with higher slope, bad vegetation cover in the most of regions. The manmade factors include reclamating the waste land with high slope which meets the increasing population, over grazing, forest destroying and developing and constructing projects.

关 键 词：黄河流域 甘肃 土壤侵蚀 遥感 普查 水土保持 TM影像 

分 类 号：S157[农业科学—土壤学] TP79[农业科学—农业基础科学]