基于RS与GIS的土地利用空间格局地形分异特征研究——以马尔康县为例

基于RS与GIS技术，分析了马尔康县主要土地利用类型在不同高程、坡度带上的土地利用空间格局，以及不同高程、坡度带上土地利用类型的多样性特征。结果表明，各种土地利用类型的空间格局因受高程、坡度的影响而具有一定的空间分布特征：耕地主要分布在坡度小于25°的范围；未利用地则主要分布在高程高、离人类活动范围较远的地方；土地利用类型的多样性随着高程、坡度的上升而减小。同时，在研究区内坡度大于25°时仍有少量耕地存在，说明该县应该加强退耕还林还草的力度。

Research on the Terrain Differential Characteristics of Land Use Spatial Pattern Based on RS and GIS Technology

Based on RS and GIS technology,the land use spatial pattern of main land use types at different elevation and slope zones and the diversity characteristics of land use types at different elevation and slope zones in Maerkang County were analyzed.The results showed that the spatial pattern of various land use types had certain spatial distribution characteristics because of the influences of height and slope gradient.The cultivated land mainly distributed in the range with the slope gradient of less than 25°.The unused land mainly distributed in the areas with high height and long distance from human activity range.The diversity of land use types decreased with the increasing of elevation and slope gradient.There was less cultivated land in the research area with the slope gradient of more than 25°,which indicated that the power of returning the cultivated land to forest and grass in this county should be strengthened.