Journal of Ecology and Rural Environment ›› 2022, Vol. 38 ›› Issue (5): 556-565.doi: 10.19741/j.issn.1673-4831.2021.0633

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Dynamic Evolution of Ecosystem Service Value in Yangtze River Delta and Analysis on the Driving Factors

FANG Lin1, CAI Jun1, LIU Yan-xiao2, YUAN Hong-wei1, LI Can-feng3   

  1. 1. Department of Public Administration, Anhui Agricultural University, Hefei 230036, China;
    2. Department of Human Geography, Northeast Normal University, Changchun 130024, China;
    3. Kunming Natural Resources Comprehensive Survey Center, China Geological Survey, Kunming 650100, China
  • Received:2021-10-17 Online:2022-05-25 Published:2022-05-25

Abstract: The Yangtze River Delta (YRD) is a region in China with an active economy, a high level of openness, and a dense population. Given the prominence of this region, it is important to explore the spatial-temporal evolution of the region's ecosystem service value (ESV) and its driving factors. This is needed to support the joint protection and management of the ecological environment in the YRD, to enhance regional sustainable development capabilities, and to advance the integrated development of the YRD. Using four-stage land use data from the YRD for 1990 to 2018, this study included a quantitative analysis of the trends in ESV changes in the YRD, and the trade-off and synergies between multiple services. This included a spatial correlation analysis, hot spot analysis, and geodector models to explore the spatio-temporal differentiation characteristics and driving factors of ESV in the YRD. The results show that:(1) Both ESV and ecosystem service function in the YRD showed a downward trend, and this trend slowed down after 2010. Before 2010, the trade-offs between regional ecosystem services decreased, and the synergies increased. After 2010, the synergies were dominant; (2) The spatial differentiation of the ESV in the YRD showed a pattern of high values in the south and low values in the north, with a significant positive spatial autocorrelation relationship. The cold spot peaked in 2010, and then began to decrease. The hot spots decreased after 2000, but the rate of the decrease declined gradually; (3) Elevation, sunshine duration, and annual precipitation were the main factors leading to the spatial differentiation of ESV in the YRD. The interaction between the proportion of primary industry and elevation was the strongest, with a q value of 0.883. The interaction between natural geographical factors and socio-economic factors are the main driving forces to the spatial differentiation of the ESV in the YRD during the study period.

Key words: Yangtze River Delta, ecosystem service value, dynamic evolution, spatial differentiation, geodetector

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