三峡库区不同坡度带土地利用空间格局研究——以重庆开县为例

On Spatial Pattern of Land Use at Different Slopes in Three Gorges Reservoir Area

基于遥感和地理信息系统技术,利用DEM和GRID模型研究了重庆开县土地利用空间分布与坡度之间的关系,分析了研究区不同坡度带的土地利用格局、主要土地利用类型随坡度变化的空间分布以及不同坡度带土地利用类型的多样性特征。研究结果表明,随着坡度的增加,耕地在各坡度带上的主导地位逐渐减弱,林地和草地的地位逐渐增强,土地利用类型的多样性指数逐渐降低。针对研究区土地利用的空间分布现状,提出了该区土地利用结构调整和规划的优化方向。

Based on the technologies of remote sensing and geographical information system, the relation between the spatial distribution pattern and slope in Kaixian of Chongqing was studied by applying digital elevation model and grid model to research, And the patterns of land use at different slope zones, the spatial distribution patterns of main land use types with the gradient changes, and the diversity indexes of land use types at different slope zones were analyzed in detail. The result showed that with the increase of slope, the dominant role of the cultivated land gradually weakened, the dominant roles of the woodland and the grassland gradually strengthened, and the diversity indexes of land use types at different slope zones gradually decreased. Aiming at the actual status of the spatial distribution pattern of land use in the study area, the optimizing orientation for land use pattern adjustment and planning was pointed out.