大滁城人居环境适宜性研究

以1 km×1 km栅格为基本单元,选取交通路网指数、水域指数、学校指数、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。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较好的相关性,二者的一次拟合度R2=0.836 1。一般适宜以上的地区132 km2,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;临界适宜地区698 km2,占大滁城面积的15.69%,人口39.33万;适宜性相对较差的地区3 619 km2,人口108.91万,占大滁城总面积的81.35%。

Suitability Research of Human Settlements Environment for the Greater Chouzhou Area

In order to evaluate the natural environment suitability of human settlements and the spatial characteristic based on GIS,we selected the traffic network index,waters index,school services index,living influence index and land surface index considered as the evaluation factors,and established human settlements environment index(HEI) modelfor the Greater Chuzhou areaby dividing 1km×1km grid as the basic unit,and then some analysis were implemented.The results showed that the human settlements environment index in Greater Chuzhou area decreased from center to edge,which was significantly correlated with population density,and thefittedvalue R2 value between them amounted to 0.8361.The general appropriateareain Greater Chuzhouwas above 132km2 in close proximity to 2.96% of the gross area,the corresponding population accounted to 8.75% ofthe gross population,3.3% of the total population gathered in the relatively suitable human settlements environment.The critical suitable region covered the area of 698 km2,accounted for 15.69% of the gross area,and 39.33 million people lived in the corresponding region.There were 3619km2 of the relatively low suitable regionin Greater Chuzhou area,and 108.91 million population lived in the corresponding areawhich was approaching 81.35% of the gross area.