摘要
Based on land use map, this paper excluded mountains, hills, water and constructions, studied wind erosion desertification in the northwestern part of Liaoning Province, with the purpose of finding a semi-humid drought-prone line. This paper took TM and MODIS images as data source and some vegetation indexes as index by using decision tree to classify the study area. The results showed that non-desertification, light, moderate, severe and extremely severe wind erosion desertification area accounted for 44.38%, 25.15%, 18.97%, 9.34% and 2.16%, respectively.