摘要
基于广西红水河流域DEM数据,利用ARCGIS软件,采用窗口分析和空间分析模块中的邻域分析工具,提取了广西红水河流域地形起伏度,从海拔高度和面积比例方面分析了该流域地形起伏度的空间分布特征,并利用SPSS软件中的回归分析法对广西红水河流域各地区平均人口密度与平均地形起伏度的相关性进行了分析,最后对广西红水河流域人居环境地形适宜性进行了评价和分级。结果表明:广西红水河流域的地形起伏度介于0~2.42之间,并呈现由东南向西北递减的空间特征,高值区主要分布在红水河上游的乐业和凌云县,低值主要分布在红水河下游等地区;广西红水河流域各地区平均人口密度与其平均地形起伏度存在一定的负相关关系,流域人居环境地形适宜程度整体表现为由东南向西北递减的态势。
Based on the DEM of the Hongshui River Basin in GuangXi, combined the window analysis and neighbor a- nalysis in ARCGIG software,this paperextracted the RDLS of the Basin and analyzed the spatial distribution characteristic of RDLS in aspect of altitude and area proportion. It also studied the correlation between the average population density and topographic by using the regression analysis suitability of the human settlements in the Basin. The result of SPSS. Finally, this paper evaluated and classified the showed that the RDLS of the Basin is between 0~2.42. The RDLS of the Basin decreases from southwest （upstream） such as LeYe and LinYun to northwest （downstream）. It found that there is a negative correlation between the population density and topographic of the Basin. And the suitability of the settlements is also decreasing from southeast to northwest too.
出处
《绿色科技》
2017年第24期87-91,共5页
Journal of Green Science and Technology
基金
国家自然科学基金重点项目(编号:41361023)
关键词
地形起伏度
人居环境
适宜性评价
湿热岩溶山区
广西红水河流域
RDLS
human settlements
suitability evaluation
damp and hot karst mountainous areas
Hongshui river basin in Guangxi
