A STUDY OF LAND DESERTIFICATION DYNAMIC CHANGE IN YELLOW RIVER BASIN
SUN Yong-jun 1,2,ZHOU qiang 2,YANG Ri-hong 2
1.Institute of Remote Sensing and GIS,Peking University,Beijing 100871,China;
2. China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China
Dynamic change information of land desertification in the Yellow River Drainage Area was extracted from remote sensing images of three different periods,which include MSS (1975),TM (1990) and ETM (2000). Investigation shows that land desertification mainly occurred in the northwestern part and the area of land desertification increased 10 653.22 km2 from 1975 to 2000,i.e.,about 426.12 km2 per year. It was the geological and climate conditions that controlled the distribution and dynamic change trend of land desertification. In addition,improper human activity accelerated the desertification trend.
孙永军, 周强, 杨日红. 黄河流域土地荒漠化动态变化遥感研究[J]. 国土资源遥感, 2008, 20(2): 74-78.
SUN Yong-Jun, ZHOU Qiang, YANG Ri-Hong. A STUDY OF LAND DESERTIFICATION DYNAMIC CHANGE IN YELLOW RIVER BASIN. REMOTE SENSING FOR LAND & RESOURCES, 2008, 20(2): 74-78.