摘要
以1km×1km栅格为基本单元,选取交通路网指数、水域指数、学校服务指数、居住影响力指数与地被指数等影响因子,运用GIS技术建立大滁城人居环境指数(HEI)模型,定量研究大滁城规划区人居环境的适宜程度及其空间规律性。研究结果表明:大滁城人居环境指数呈现由中心区域向周边地区递减的趋势;人居环境指数与人口密度有着较好的相关性,二者的一次拟合度R2=0.8361。大滁城人居环境适宜性评价结果显示,大滁城一般适宜以上的地区132km2,接近大滁城面积的2.96%,相应的人口占大滁城8.75%,其中3.3%的人口聚集在0.78%人居环境高度适宜和比较适宜地区;大滁城人居环境临界适宜地区698km2,占大滁城国土面积的15.69%,相应的人口39.33万,占大滁城总人口的24.21%,人口密度555人/km2,是大滁城人居环境适宜与否的过渡地区;大滁城人居环境不适宜地区3619km2,人口108.91万,占大滁城总面积的81.35%,人口密度为303人/km2,低于大滁城地区365人/km2的平均水平。
With 1km × 1km grid for the basic unit ,the evaluation factors such as the traffic network in-dex ,waters index ,school services index ,living influence index and land surface index are chosen . Based on GIS setting up Chuzhou city human settlements environment index （HEI） model ,the natural environment suitability of human settlements and the spatial regularity are evaluated .The results show that ：Chuzhou city human settlements environment index decreases from center to edge ,w hich reflects population density is significantly correlated with population density at grid size and the R 2 value for them amounts to 0 .8361 .Chuzhou city residential environment suitability assessment showed that Chuzhou city＇s general appropriate area is above 132km2 ,close to 2 .96% of the city area ,the corre-sponding population accounts to 8 .75% of it ,and 3 .3% of the population gathered in highly and rela-tively suitable human settlements environment . T he critical suitable region covering the area of 698 km2 ,accounts for 15 .69% of the city ,and there are 39 .33 million people live in this region ,accounts for 24 .21% of the city .555 people per square kilometers is the Chuzhou residential environment appro-priate or not by the transition region .T here are 3619km2 of the non -suitable region in Chuzhou city with the 108 .91 million population ,accounting for the city area by 81 .35% ,population density for 303 people/km2 ,below the city average level of 365 people/km2 .
出处
《滁州学院学报》
2013年第5期11-17,共7页
Journal of Chuzhou University
关键词
人居环境
GIS
人居环境指数
人居环境适宜性
大滁城
human settlements
GIS
human settlements environment index
natural environment suita-bility
ChuZhou
