Remote sensing techniques and geographic information systems offer a good means of collecting and manipulating the data required to assess conservation practices. A method for automatic generation of most of the data ...Remote sensing techniques and geographic information systems offer a good means of collecting and manipulating the data required to assess conservation practices. A method for automatic generation of most of the data required by the agricultural non point source (AGNPS) erosion model is put forward from three sources: (1) files with contour lines from topographic maps, (2) soil mapping units from soil surveys, and (3) land cover from land sat TM image classifications.展开更多
基金SupportedbytheScienceandTechnologyCommitteeofSichuanProvince (No .0 1SG47 0 2 )
文摘Remote sensing techniques and geographic information systems offer a good means of collecting and manipulating the data required to assess conservation practices. A method for automatic generation of most of the data required by the agricultural non point source (AGNPS) erosion model is put forward from three sources: (1) files with contour lines from topographic maps, (2) soil mapping units from soil surveys, and (3) land cover from land sat TM image classifications.
