TM图象在三川河流域土地利用现状调查中的应用

THE APPLICATION OF TM FIGURE TO THE PRESENT SITUATION INVESTIGATION OF THE LAND UTILIZATION OF THE 3-RIVER DRAINAGE BASIN

本文在分析 TM 图象基本数据和特征基础上,建立了三川河流域土地利用现状的解译标志,编绘了该区1:25万土地利用现状图,探讨了旱坡地和旱梯田,灌木林地和疏林地、天然草地和人工草地的解译方法.

According to the analysis of the basic data and characteritics of TM fig- ure,the present paper establishes.The symbols of the explanation of the persent situation of the Land uailization of the 3-river drainage basin draws a present situation picture of the Land utilization of this area in the ratio of one to two hunedred and fifty thousand mu.This paper probe into the methods of the explanation of the dry slope Land and dry terraced fields, bush Land and spanse wood Land.natural grassland and artificial grassland.