县域土地利用/土地覆被时空转换研究——以杜尔伯特蒙古族自治县为例

在遥感和GIS支持下 ,利用TM、MSS、地形图及相关资料 ,研究了 1 95 4 - 2 0 0 1年杜尔伯特蒙古族自治县土地利用时空转换形式 ,运用稳定性的概念来解释土地利用变化趋向稳定与否的。结果表明水域和与人类活动关系密切的城镇及居民用地 ,耕地最为稳定 ,其次稳定的是盐碱地和其他难利用土地 ,湿地 ,林地 ,草地稳定性较差。这充分说明了人类在土地利用中一旦开垦耕地一般就不会放弃耕种 ,水域和湿地不能轻易改为它用 ,土地退化了的盐碱地因改良难而较稳定 ,湿地和草地因受降水量的影响 ,较不稳定。

A Study on the Spatial-temporal Land Use Conversion in County Region--Taking Duerbete County as an example

Based on Remote Sensing and GIS, the land use conversion was researched by TM, MSS, topographic mapand other data in Duerbete Countyduring 1954 to 2001. The tendency of the land-use conversion was explained with the conception of stability. The result indicated: water area,town and residentland were the steadiest land; the steadier land included saline-alkali land and the other difficultly used land; the steady of the wetland, woodland and grassland was low. This showed that human being didn't abandon cultureonce they had reclaimedland, water area and wetland couldn't easily be altered touse for other purpose,at the same time degradedsaline-alkali land was steadier because it would be improveddifficultly, but wetland and grassland were not instablebecause of precipitation.