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International audienceExcessive water is used by farm field in Tarim riverbasin, it is very important to deep study on the relation between areaof farm field and natural vegetation in recent 50 years. Collecting andprocessing various decades of remote sensing data, and got area of farmfield, grass, forest, town and non-serviceable field. These resultsindict that: Because of the high flow period between 1950 and 1972, apart of grassland converts forest. From 1972 to 1990, because ofincrease of farm field, limited water isn't enough to grassland andforest, and a fraction of forest area converts grassland again. Withrapid increase of area of farm field, more water need from the river andunderground, which causes water level depression, and natural ecologybecomes deteriorative from 1990 to 2000. Comprehensive analysis indictsthat agriculture control implemented by government is necessary torecovery of ecology, or farm field also would be lost eventually withdestruction of natural ecology

The Research on Natural Vegetation’s Response to Agriculture in Tarim River Basin in Recent 50 Years Using Multi-Source Remote Sensing Data