
The evolution and driving mechanism of urban green space system: a case study of Xuchang City, Henan Province, China
LIU Jie, ZHANG Lang, ZHANG Qingping
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2024, Vol. 48 ›› Issue (3) : 275-284.
The evolution and driving mechanism of urban green space system: a case study of Xuchang City, Henan Province, China
【Objective】 Owing to tighter resource constraints and intensive land development, we analyzed the ecological, social, and economic functions of urban green space system (UGSS), and determined its evolutionary characteristics and driving mechanism. To provide a basis for efficient urban land allocation and decision-making support for urban construction. 【Method】 Xuchang City (Henan Province) was selected as a case study, using time nodes data from 2010, 2014 and 2019. We applied the backtracking method with a land use simulation model and random forest regression; driving factors such as policy, natural and socioeconomic factors were analyzed. 【Result】 (1) From 2010 to 2019, Xuchang’s UGSS developed from the northeast and north, which was consistent with the guidance of urban planning policies. (2) The impact of planning policy on UGSS could either be positive protection or negative erosion. The GeoSOS-FLUS model and the backtracking method could simulate the changes in the UGSS, which could then be used to determine the impacts of the planning policy and establish an analytical framework for policy failure. (3) Socioeconomic factors had a significant impact on changes in the areas of township-level UGSS and the landscape pattern index, whereas natural factors had lower impacts. In Xuchang, which located on a plain, topography, had the smallest impact on changes in UGSS. The patch density changes in the UGSS had a high goodness of fit with each driving factor, which reflects the correlations between the UGSS landscape pattern and its driving factors. 【Conclusion】 Planning policy is the guiding driver of changes in UGSS, whereas socioeconomic factors directly drive changes in UGSS and natural factors have relatively little impact. Determining the evolution law of UGSS is necessary for enhancing scientific and forward-looking planning for UGSS under the new territorial spatial planning system.
urban green space system / evolution characteristics / driving mechanism / socioeconomic factors / policy factors / Xuchang City, Henan Province
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