Collected the five typical regions in 1980, 1990, 2013 of 30 m series of Landsat image data sets, and finished the basic processing such as geometric correction、 image enhancement; collected the field survey data and reference data of typical area; used markov random field space context information fusion and the downscaling NDVI time-series data generation technology developed a set of automatic change detection and A-level class update based on remote sensing information; based on multi-source remote sens...