HUBEI AGRICULTURAL SCIENCES ›› 2023, Vol. 62 ›› Issue (3): 116-124.doi: 10.14088/j.cnki.issn0439-8114.2023.03.019

• Land Use • Previous Articles     Next Articles

Analysis of spatio-temporal characteristics and driving factors of urban land expansion in Yangtze River Delta urban agglomeration

ZHANG Xue-ting1, LU Bin-bin1,2, YU Dan-lin1,3, ZHENG Jiang-hua1,4   

  1. 1. College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China;
    2. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China;
    3. Department of Earth and Environmental Studies, Montclair State University, Montclair 07043, America;
    4. Key Laboratory of Oasis Ecology, Ministry of Education, Urumqi 830046, China
  • Received:2022-01-10 Published:2023-04-20

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Abstract: The urban land monitoring data of the Yangtze River Delta urban agglomeration from 1995 to 2015 were selected, the spatial and temporal evolution characteristics of urban land use were analyzed by selecting three indicators of urban land expansion intensity index, fractal dimension and urbanization rate, and the driving forces of urban land use evolution were analyzed based on geographically weighted regression （GWR）. The results showed that the urban land expansion intensity in the Yangtze River Delta urban agglomeration increased first, then decreased, and then slowly increased. The towns with high-speed expansion accounted for 7.7% of the total, and those with medium-speed expansion accounted for 20.2% of the total. Towns with low-speed expansion accounted for 72.1% of the total. From 1995 to 2015, the fractal dimension of all provinces in the Yangtze River Delta urban agglomerations increased, while the fractal dimension of Anhui Province was relatively low and the change range was large; while the fractal dimension of Jiangsu Province was relatively stable, and the fractal dimension of Shanghai City showed a stable rise, and the fractal dimension of Jiangsu Province and Shanghai City were higher than the average level of the Yangtze River Delta urban agglomerations. From 1995 to 2015, economy, medical and health care, and education were the main driving forces of cities in the southern part of the Yangtze River Delta urban agglomeration, while primary industry, transportation and population were the main driving forces of cities in the northern part of the Yangtze River Delta urban agglomeration. From the perspective of spatial dimension, in 1995, economy and medical and health care were the main driving forces of the urban agglomerations in Zhejiang Province and Shanghai City. Over time, the population was the main driving force in the northern part of the urban agglomerations, while medical and health care was the main driving force in the southern part of the urban agglomerations.

Key words: urban land, driving force, geographically weighted regression （GWR）, Yangtze River Delta urban agglomeration

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