四川县域人口空间分布特征分析  

Features Analysis of the Population Spatial Distribution in Sichuan at the County Level

作　　者：李雪[1] 李少达[1] 杨容浩[1] 罗明良[2] 窦馨逸 LI Xue

机构地区：[1]成都理工大学地球科学学院,成都610059 [2]西华师范大学国土资源学院,四川南充637009 [3]西北大学城市与环境学院,陕西西安710127

出　　处：《地理空间信息》2018年第12期58-61,95,129,共6页Geospatial Information

基　　金：四川省应急测绘与防灾减灾工程技术研究中心开放基金资助项目(K2014B001);四川省教育厅科研项目(15ZA0060)

摘　　要：依据2005～2014年人口数据,借助GIS工具,运用人口密度、人口重心和热点分析了四川县域人口空间分布规律。结果表明:(1)四川人口东西分布不均衡,其超过80%的人口在1/4的土地面积上集聚,而约3/4的土地面积上却生活着不足20%的人口,宣汉–江油–绵竹–都江堰–大邑–雨城–峨眉–屏山一线是四川人口密集–稀疏分界线;(2)随着人口密度的逐级递增,四川人口的重心从西部山区逐渐移向东部平原,人口由稀疏变得密集,人口的多圈层聚集特征十分明显;(3)四川人口分区可划分为5个级别6大区域,据此可将人口地理分布划分为热点区、较热点区、过渡区、冷点区、较冷点区5大类型区;(4) 2005～2014年四川89%的县市人口密度增长不大,5个市县人口密度增加超过100人/km2,18个市县人口密度出现负增长,人口重心向西南方向移动了2.68 km。Based on the population data of 2005 and 2014,we used the population density,population center of gravity and hot spots analysis to analyze the population spatial distribution in Sichuan at the county level.The results show that①there are more than 80%population distributed in the about 1/4 area,however,less than 1/5 population living on more than 3/4 of the land area of Sichuan province.The demarcation lines are formed by Xuanhan,Jiangyou,Mianzhu,Dujiangyan,Dayi,Yucheng,Emeishan and Pingshan Cities,which divide Sichuan Province into densely area and sparsely area.②The gravity center of population distribution gradually moves from western mountains to eastern plains as the population density changed from high to low.③The population distribution pattern in Sichuan Province can be divided into five levels in six regions,which can be described as hot spot,moderate hot spot,transition of hot-to-cold,moderate cold and cold population zones.④There are about 89%counties in which population density grow little and 5 counties increased more than 100 persons per square kilometer,while in other 18 counties population density becomes less from 2005 to 2014.The gravity of Sichuan Province’population moves to southwest from 2005 to 2014 and the distance of movement is approximately 2.68 km.

关 键 词：人口密度 人口重心 GIS 四川省 县域尺度 

分 类 号：P208[天文地球—地图制图学与地理信息工程]