高山峡谷地区土地资源卫星遥感技术研究

SATELLTE REMOTE SENSING APPROACH FOR INVESTIGATION OF LAND RESOURCES IN ALPINE AND GORGE AREAS

采用卫星磁带计算机处理,航、卫片结合调查,不同比例尺嵌合成图和简化的净耕地系数综合区划取样法,线状地物调左的镜测及数学模型修正,农村居民点分区多点抽样测量等新技术和新方法可解决高山峡谷地区土地资源调查中的技术难题.

Alpind and gorge areas in the west of Sichuan and Yunnan provinces have an area of more than 400 000Km^2,and it is difficult to carry out an investigation of land resources in these areas due to a high relief of 3000～6000 meters,complicated vertical landscape,large imagery shadows,fragmented cultivated land and underdeveloped economy and transporta- tion.The project team chose Lading county as the study area where the team explored a se- ries of new adaptive techniques and methodology,such as mapping from the combination of air photos and satellite images,computer-assisted image processing,sample design for achieving cultivated land coefficients,linear target processing and sampling of small rural settlements.All these helped to solve the technical problems existing in the investigation of land resources in such areas and provided a complete set of fit technical routines and operational approaches.