纹理解译标志在土壤侵蚀遥感调查中的应用

利用1:10万卫星遥感影像进行土壤侵蚀调查时,建立了纹理解译标志,研究了水蚀(包括又分为鳞片状面蚀、耕地面蚀、细沟蚀、切沟蚀、沟蚀,土壤侵蚀程度依次加重)和风蚀的影像解译特征。以RS和GIS相结合,利用坡度分析系统与土地利用数字化资料,进行了室内微机辅助判读,人机交互,进行图像处理和数字化处理,建立了分市县的土壤侵蚀强度数据库和图形数据库,并形成土壤侵蚀图。

Texture Interpretation Keys Using in Remote Sensing Investigation of Soil Erosion

Using the investigation of soil erosion and applying the secondary planet remote image of scale 1:100 000,the texture interpretation keys was set up. Shadow characteristic of water erosion was studied (including squama surface erosion, plowland surface erosion, little channel erosion, channel erosion and ravine erosion,the degree of soil erosion is increased),as well as shadow characteristic of wind erosion. Combined remote sensing with GIS,using the sloping analysis system and numeric information of ground, assistant read by the computer,exchanging each other were conducted.Dealing with image by numeric.Finally the database of soil erosion intensity and figure database were set up,and the map of soil erosion is formed.