"Hu Huan-yong Line (Hu Line)" depicts a geographical pattern of China's population distribution.Its essence is the regionality of human-land relationship and reflects basic characteristics and laws of human beings' adaptation to the natural environment.With the development of the times and the progress of modern science and technology,especially the rapid urbanization and construction of transportation network system in China,the connection between economic and geographical space has been continuously strengthened.The geographical transition zones from mountain areas to plains,i.e.,transitional geographical space,have promoted the changes in human-land relationships through population migration and agglomeration.Taking Sichuan-Yunnan provinces at the southern end of Hu Line as study area,this study analyzed the spatial correlation between population distribution and economy in this region,explored the pattern of geographical agglomeration and deagglomeration,and explained the changing characteristics of human-land relationship in transitional geographic space using global Moran's I index,global regression model(GRM) and geographically weighted regression(GWR).The results show that population and Gross Domestic Product (GDP) have significant spatial dependence to this region,with obvious aggregation in geographical distribution and positive autocorrelation;comparing with the general least square model,the GWR model incorporating spatial effect was more suitable for revealing the distribution characteristics of geographical elements,with fine results and better fitting;the spatial model of population and GDP as well as the spatio-temporal evolution model of their changes,all of them strongly indicated that Normalized Difference Vegetation Index (NDVI) and road density were importantfactors governing the spatial differentiation of population and economy;under the rapid development of regional economy and continuous evolution of urban-rural relations,rural transformation and spatial reconstruction promoted the change of population migration and agglomeration.

DENG Wei;CHENG Yu-fang;YU Huan;PENG Li;KONG Bo;HOU Yu-ting

School of Geography and Resource Science,Sichuan Normal University,Chengdu 610066,China;Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China;School of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China;Institute of Aerospace Information Innovation,Chinese Academy of Sciences,Beijing 100094,China

山地科学学报（英文版）

[1]DENG Wei;CHENG Yu-fang;YU Huan;PENG Li;KONG Bo;HOU Yu-ting-.Spatio-temporal characteristics of population and economy in transitional geographic space at the southern end of "Hu Huan-yong Line")[J].山地科学学报（英文版）,2022(02):350-364

yong,regionality,deagglomeration,importantfactors

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