Evaluating the disparity between supply and demand of park green space using a multi-dimensional spatial equity evaluation framework

《Evaluating the disparity between supply and demand of park green space using a multi-dimensional spatial equity evaluation framework》

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作者: Bingxi Liu;Yu Tian;Meng Guo;Ducthien Tran;Abdulfattah Ahmed Qasem Alwah;Dawei Xu

关键字: Spatial equity;Accessibility;Park green space;Supply-demand;Socioeconomic characteristics;China

作者单位: College of Landscape Architecture, Northeast Forestry University, Harbin 150000, China;Key Lab for Garden Plant Germplasm Development & Landscape Eco-restoration in Cold Regions of Heilongjiang Province, Harbin 150000, China;College of Landscape Architecture and Urban Greenning, Vietnam National University of Forestry, Hanoi 156200, Viet Nam;College of Engineering and Architecture, Ibb university, Ibb, Yemen;College of Landscape Architecture, Northeast Forestry University, Harbin 150000, China;Key Lab for Garden Plant Germplasm Development & Landscape Eco-restoration in Cold Regions of Heilongjiang Province, Harbin 150000, China;College of Landscape Architecture and Urban Greenning, Vietnam National University of Forestry, Hanoi 156200, Viet Nam;College of Engineering and Architecture, Ibb university, Ibb, Yemen

摘要: In the context of rapid urban expansion and population growth, the spatial inequity of park green spaces' (PGSs) supply and demand has become a research focus. However, few studies have conducted a multi-level comprehensive evaluation of the supply–demand ratio of PGSs at the grid resolution scale. This study developed a multi-dimensional spatial equity evaluation (MSEE) framework consisting of scale dimensions (local, district, and regional levels) and index dimensions (accessibility, supply–demand ratio, spatial cluster identification). Taking the main urban area of Harbin as an example, we measured the spatial differences between supply and demand for PGSs at various planning levels at a resolution of 500 × 500 m. The results showed serious spatial inequity in supply and demand for PGSs, especially spatial discrepancy among different PGSs. The supply of mini-parks is severely insufficient, and the distribution of comprehensive parks is too concentrated, leading to the polarization of saturated supply and inadequate supply. Some social groups studied in this article, such as older people, rural dwellers, and low-income people, are disadvantaged in accessing PGSs. We recommended that the MSEE framework be used as a reference for future policy formulation. It also provides a flexible operating model that is applicable to other cities.