基于GIS与全排列多边形的长沙市土地节约集约利用评价

借助全排列多边形图示指标法的思想方法,选取长沙市作为研究对象,构建了区域土地节约集约利用评价的指标体系,进行了包含9项指标的定量化评价。结果表明,长沙市总体的土地节约集约利用综合程度整体保持增大趋势,且增速越来越快,各县(区、市)的土地节约集约利用水平在2010年之后表现为芙蓉区天心区雨花区开福区岳麓区长沙县望城区浏阳市宁乡县,5个市辖区的节约集约利用水平高于长沙市总体水平,而其余的4个县(区、市)的节约集约利用水平低于长沙市总体水平,长沙市各区县的土地节约集约利用程度及增幅与距芙蓉区的距离反相关。

Evaluation of Economical Intensive Land Use Based on GIS and Entire-array-polygon Indictor Method---A Case in Changsha

Entire-array-polygon graphical representation and indictor method, a new method used in eco-city evaluation, was used to evaluate the degree of economical intensive land use(EILU). Changsha in Hunan Province was taken as a case study area, an evaluation system including 9 indices was built to quantitatively assess the degree of EILU. The results showed that the overall EILU in Changsha extent kept increasing trend, and with a rapid increase. In 2010, the EILU degree from high to low for counties and districts in Changsha was Furong, Tianxin, Yuhua, Kaifu, Yuelu, Changsha county, Wangcheng, Liuyang and Ningxiang. The five municipal districts were higher than the overall level of Changsha city, while the four coun-ties (districts and municipalities) were lower, and the extent and growth of EILU for all were inversely related with the dis-tance from the Furong District.