Peculiarities' changes investigation of soil erosion in China in space and time with remote sensing data

摘要

Application of remote sensing data (air photos, space images, digital data collected by different satellites) allowed to develop methodological approaches to the soil erosion mapping in south-eastern China. Using of these data permits to estimate theerosion processes degree and dynamics on 3000 km~2. Multi temporal remote sensing information with GIS-technology's application decreases soil erosion mapping cost, increases its accuracy and shortens map compilation time. It was determined eroded soilsdecrease to some extent for 40 years period when strongly eroded soils areas were relatively constant.