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在本区(102°35′—109°15′E,28°50′—33°10′N,土地面积15.5万平方公里)土地利用现状调查中,用影像判读标志和地理景观综合分析判读,确定地理要素(纬度、地貌、海拔、坡度、坡向)和人类开发活动对土地利用类型的影响,掌握各种地类的分布规律和开发利用特征。据此,对 9个一级地类和 18个二级地类编制成1:20万土地利用现状图。经野外验证,判读准确率91%。
In the survey of land use status of the area (102 ° 35’-109 ° 15’E, 28 ° 50’-33 ° 10’N and land area of 155,000 km 2), comprehensive interpretation and interpretation using image interpretation signs and geographical landscapes, Determine the geographical elements (latitude, topography, elevation, slope, aspect) and human development activities on the type of land use, to grasp the distribution of various types of land and development and utilization characteristics. Accordingly, a land-use status map of 1: 200,000 was compiled for 9 first-level land-use types and 18 second-level land-use types. Field verification, interpretation of the accuracy rate of 91%.