基于RS和GIS的成都市新都区人居环境适宜性评价

Evaluation on Human settlements suitability in the Xindu district of Chengdu city based RS and GIS

人居环境适宜性评价以大尺度区域自然因子系统评价较多,较少以小尺度地域考虑现代人居环境选择性趋向研究人居环境适宜性评价。本文基于ENVI和ArcGIS软件,以1km×1km栅格为基本单元,以成都市新都区小尺度地域为研究对象,选取水文、植被、交通等影响因子,建立人居环境适宜性评价模型,对成都市新都区人居环境适宜性进行了评价和分级。研究表明:成都市新都区人居环境适宜性等级可划分为5级。最高的一级适宜区有新都、新民、新繁西南、大丰等地,占比15.6%。居中的适宜区有木兰、三河、马家、军屯、新繁、斑竹园、石板滩等地。受交通、水文、植被等因子影响,龙安、龙桥、竹友、龙虎、泰兴人居环境适宜性等级最低。

The evaluation on of Human settlements suitability based on the evaluation of the natural factors in the large-scale regional is more,and study on the evaluation of Human settlements suitability in the view of selective tendency of modern habitat environment is less.Based on ENVI and ArcGIS software,at a 1km×1km grid size,this paper takes the small scale area of Xindu District of Chengdu as the research object,selects the main factors of hydrology,vegetation,transportation,sets up the human settlement suitability evaluation model,to assess and grade the human settlement suitability of Xindu District of Chengdu.Research shows that:the human settlement suitability regionalization grades of Xindu district of Chengdu can be divided into five.The highest grade suitable region includes Xindu,Xinmin,Southwest of Xinfan,Dafeng,accounted for 15.6%.The intermediate suitable region have Mulan,Sanhe,Majia,Juntun,Xinfan,Banzhuyuan,Shibantan etc.Affected by the factors such as traffic,hydrology,vegetation,the lowest level grade suitable region includes Longan,Longqiao,Zhuyou,Longhu,Taixing etc.