嘉陵江流域土地经济密度时空演变特征  

Spatial and Temporal Evolution Characteristics of Land Economic Density in Jialing River Basin

作　　者：付潇 李谦 王佑汉[3] 张恩广[4] FU Xiao;LI Qian;WANG Youhan;ZHANG Enguang(Tourism and Urban-Rural Planning College,Chengdu University of Technology,Chengdu Sichuan 610059,China;College of Business,China West Normal University,Nanchong Sichuan 637009,China;College of Land and Resources,China West Normal University,Nanchong Sichuan 637009,China;Chongqing Three Gorges Vocational College,Chongqing 404100,China)

机构地区：[1]成都理工大学旅游与城乡规划学院,成都610059 [2]西华师范大学商学院,四川南充637009 [3]西华师范大学国土资源学院,四川南充637009 [4]重庆三峡职业学院,重庆404100

出　　处：《西华师范大学学报（自然科学版）》2021年第3期306-313,共8页Journal of China West Normal University(Natural Sciences)

基　　金：国家社会科学基金项目(19XJY008);四川省革命老区发展研究中心项目(20190060,SLQ2019C-18)。

摘　　要：文章分析了1995—2017年嘉陵江流经的74个县域的土地经济密度的时空演变特征,发现从时间上看,嘉陵江流域土地经济密度的相对发展速率下游快于中游,上游发展速率最低;上游地区的区内差异造成了流域总体差异不断扩大;从空间格局变化看,流域整体上在1995—2015年空间相关性减弱,集聚程度减小,2015—2017年则出现联系增强,集聚增大。局部上大部分县域的相关性不显著,极化现象突出。下游地区的土地经济密度不断提高,带动了下游的几个县域发展,中游部分经济密度较高的县域则退出了集聚中心的行列。This paper analyzes the spatial and temporal evolution characteristics of land economic density of 74 counties along the Jialing River from 1995 to 2017.From the perspective of temporal evolution,the relative development rate of land economic density in the lower reaches is found to be faster than that in the middle reaches,and the development rate in the upper reaches is the lowest.The regional differences in the upstream region have resulted in the continuous expansion of the overall differences in the basin.In terms of spatial pattern evolution,the overall spatial correlation of the basin had weakened and the degree of agglomeration had decreased from 1995 to 2015 whereas the connection was strengthened and the agglomeration was increased from 2015 to 2017.Locally,most of the county correlation is not significant and the polarization phenomenon is prominent.The increasing land economic density of downstream region has promoted the development of its several counties whereas some counties with high land economic density in the midstream region have retreated from the ranks of agglomeration centers.

关 键 词：嘉陵江流域 土地经济密度 时空演变 特征 

分 类 号：K901[历史地理—人文地理学] K902