Relief Degree of Land Surface and Population Distribution of Mountainous Areas in China  

作　　者：LIU Ying DENG Wei SONG Xue-qian 

机构地区：[1]Institute of Mountain Hazards and Environment, Chinese Academy of Science [2]University of Chinese Academy of Science [3]Chengdu University of Information Technology

出　　处：《Journal of Mountain Science》2015年第2期518-532,共15页山地科学学报（英文）

基　　金：supported by a grant from the Major State Basic Research Development Program of China (973 Program) (Grant No. 2015CB452706);National Natural Science Foundation of China (Grant No. 41471469);provided by the national scientific datasharing project Earth System Science Data Sharing Network

摘　　要：Evaluation on the population pressure in the mountainous areas is a necessary condition for the protection and good governance. The evaluation depends on accurate population density assessment. Traditional methods used to calculate population density often adopt the administrative region as a scale for statistical analysis. These methods did not consider the effects of the relief degree of land surface(RDLS) on the population distribution. Therefore they cannot accurately reflect the degree of population aggregation, especially in mountainous areas. To explore this issue further, we took the mountainous areas of China as the research area. China has A total area of 666 km2 can be classified as mountainous area,accounting for 69.4% of the country's total landmass. The data used in this research included the digital elevation model(DEM) of China at a scale of 1:1,000,000, National population density raster data, the DEM and the national population density raster data. First, we determined the relief degree of land surface(RDLS). Next, we conducted a correlation analysis between the population distribution and the RDLS using the Statistical Package for Social Science(SPSS). Based on the correlation analysis results and population distribution, this new method was used to revise the provincial population density of themountainous areas. The revised results were used to determine the population pressure of different mountainous areas. Overall, the following results were obtained:(1) The RDLS was low in most mountainous areas(with a value between 0 and 3.5) and exhibited a spatial pattern that followed the physiognomy of China;(2) The relationship between the RDLS and population density were logarithmic, with an R2 value up to 0.798(p<0.05), and the correlation decreased from east to west;(3) The difference between the revised population density(RPD) and the traditional population density(PD) was larger in the southeastern region of China than in the northwestern region;(4) In addition, compared with traditional result

关 键 词：Land surface Relief degree Population density Population pressure Population distribution MOUNTAIN China 

分 类 号：D422.6[政治法律—政治学]