摘要
以绵阳市为研究区域,采用移动窗口法和均值变点法提取地形起伏度,分析地形起伏度对人口密度、经济密度的影响及其相关性,并与海拔进行对比分析.结果表明:①绵阳市中起伏度地形(200~500 m)占比最大,占研究区土地面积33.97%;小起伏度地形(70~200 m)次之,占26.83%;大起伏度地形(500~1000 m)占18.32%;微起伏度地形(30~70 m)占15.46%;平坦地形(0~30 m)占5.38%、极大起伏度地形(>1000m)占比最少,占0.4%.②地形起伏度对绵阳市人口分布、经济发展的影响强于海拔的影响;地形起伏度对人口分布的影响强于对经济发展的影响,且均呈显著负相关.③绵阳市地形起伏度不超过70 m的地区,聚集了26.67%的人口和35.41%的经济总量,但土地面积仅占2.74%,人口和经济活动向平原、台地等地形起伏度较小地区聚集趋势明显.
Taking Mianyang City as the research area,the relief degree of land surface was extracted by means of moving window method and mean change point method,and the influence and correlation of the relief degree of land surface on population density and economic density were analyzed,and compared with altitude.The results showed that:(1)the medium-relief terrain(200-500 m)accounted for the largest proportion,accounting for 33.97%of the land area in the study area.Small relief terrain(70-200 m)is the second,accounting for 26.83%;Large relief(500-1000 m)accounted for 18.32%;The micro-relief terrain(30-70 m)accounted for 15.46%;Flat terrain(0-30 m)accounted for 5.38%and the maximum relief terrain(>1000 m)for 0.4%.(2)The effect of the relief degree of land surface on population distribution and economic development in Mianyang City is stronger than that of altitude.The effect of the relief degree of land surface on population distribution is stronger than that on economic development,and there is a significant negative correlation.(3)The area with the relief degree of land surface less than 70m has 26.67%of the population and 35.41%of the total economic volume,but only 2.74%of the land area.The population and economic activities of Mianyang City tend to converge to the areas with small relief degree of land surface,such as plain and platform.
作者
邓诗韵
何云晓
何贝贝
DENG Shiyun;HE Yunxiao;HE Beibei(School of Resource and Environmental Engineering,Mianyang Teachers'College,Mianyang,Sichuan 621000;School of Urban and Rural Construction and Planning,Mianyang Teachers'College,Mianyang,Sichuan 621000)
出处
《绵阳师范学院学报》
2023年第5期117-124,共8页
Journal of Mianyang Teachers＇ College
基金
绵阳师范学院研究生创新实践项目“基于地形起伏度的绵阳市经济、人口分布研究”(CX202224).
关键词
地形起伏度
均值变点法
绵阳市
人口
经济
the relief degree of land surface
mean turning-point method
Mianyang City
population
economy
