Affiliation:
1. Faculty of Geography, Yunnan Normal University, Kunming 650500, China
2. Center for Geospatial Information Engineering and Technology of Yunnan Province, Kunming 650500, China
3. School of Geographical Sciences, Southwest University, Chongqing 400715, China
Abstract
The Central Yunnan Urban Agglomeration (CYUA) is an important zone of western development in China. The clarification of the spatial structure and changing trends in CYUA could help promote the coordinated development of the CYUA and enhance the overall competitiveness of the region. Based on data from the Yunnan Statistical Yearbook and the nighttime light data, this paper extracts the urban built-up area of the CYUA and analyzes the urban expansion and urban spatial connection intensity of the CYUA from 2000 to 2018 by using the urban gravity center model and the gravity model. The results show the following: (1) From 2000 to 2018, the urban built-up area of the CYUA expanded rapidly, and the urban built-up area increased by 369.35%, with Kunming accounting for 45.41% of the increased area. Kunming was the main contributor to the increase in the urban built-up area in the CYUA. From 2000 to 2018, the urban built-up areas of the CYUA were scattered in various mountain basins. (2) Overall, the urban gravity center of the CYUA has moved to Kunming, and the distance of the urban gravity center has increased since 2005, indicating that urban expansion has accelerated since 2005. (3) The development of the CYUA is extremely unbalanced. The urban spatial connection intensity between Kunming city, Yuxi city, and Qujing city, and Yi Autonomous Prefecture of Chuxiong is relatively strong, while the urban spatial connection intensity among cities other than Kunming is weak. Overall, the CYUA is characterized by stellar radiation with Kunming city as the core and Yuxi city as the secondary core.
Funder
National Natural Science Foundation of China
Subject
General Engineering,General Mathematics
Reference56 articles.
1. Comprehensive measurement and spatial distinction of input-output efficiency of urban agglomerations in China;C. Fang;Acta Geographica Sinica,2011
2. Spatial differences and spillover effects of economic development of urban agglomerations in China;H. Liu;Finance and Trade Research,2017
3. The spatial framework and change of Chinese provincial region economic links;H. Wang;Economic Geography,2012
4. Urban Spatial Interaction Analysis Using Inter-City Transport Big Data: A Case Study of the Yangtze River Delta Urban Agglomeration of China
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