关键词: 土地覆盖/利用变化, 遥感, GIS, 奈曼旗

Abstract: Naiman banner is one of the most severely desertified regions in Chinese ecotone between agriculture and animal husbandry, and is one of the improtant desertification monitoring areas of China. Along with a series of land renovations, land cover/use has changed greatly since 1980s. Using remote sensing figures by Landsat TM 1∶100000 in 1980 and 1996 and GIS data, the authors have studied land cover/use change, including its structure and amount change, spatial landscape characteristics change and main change processes. The main results are as follows:(1)Cropland and unused land decreased greatly, woodland and grassland increased since 1980s;(2)The main land cover/use change processes are that cropland returned to grassland and woodland, unused land changed into grassland, grassland converted into woodland;(3)The landscape changed into fragmentation and land use diversity enhanced.

Key words: land cover/use change, remote sensing, GIS, Naiman Banner