云南省元谋县低丘缓坡土地资源建设适宜性评价

Constructive Land Suitability Assessment of Low-slope Hilly Regions in Yuanmou County, Yunnan Province

以云南元谋县为例,应用元谋县数字高程模型(DEM),通过GIS软件生成海拔、坡度等数据的空间分布,结合2011年完成的土地变更调查数据,统计出元谋县低丘缓坡区域土地资源总量,并采取多因素综合评价法和层次组合法确定评价指标体系,通过专家打分法给各个评价因子赋予权重的方法构建了低丘缓坡土地资源宜建性评价体系,对评价区域范围内的土地建设适宜性进行评价分析。统计出元谋县内适宜建设的低丘缓坡土地资源为49 133.15 hm2,占总低丘缓坡土地面积的41.16%。

Taking Yuanmou Country as a case study, we used DEM to generate the spatial distribution of elevation, slope and aspect of the county. Using the land use change survey data of the county in 2011, the statistical results of total area of low-slope hilly land resources were calculated. And then, according to comprehensive multi factor method and hierarchical list method, an assessment index system was established. Based on a constructive land suitability assessment system, in which the weight for assessment factor is determined by expert scoring method, the constructive land suitability of the low-slope hilly regions in the county was analyzed and evaluated. The results show that the area of land resources for constructive land use is 49 133.15 hectares, which is about 41.16% of the total area of the low-slope hilly land.