关于城市公园冷却效应的尺寸值及其冷却可访问性和公平性的研究
Jun Zhang1, Huina Zhang2, Ruoming Qi1
1College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China.
Scientific reports
|July 13, 2024
概括
城市公园提供冷却效益,但其规模和可访问性显著影响效率和公平性. 这项研究量化了公园冷却门,以优化城市规划,以更好地减轻热量和更公平地分配资源.
科学领域:
- 城市规划和环境科学
- 地理信息系统 (GIS) 和空间分析
- 环境公平和社会正义.
背景情况:
- 快速城市化加剧了城市热岛 (UHI) 效应和社会不平等.
- 优化城市公园设计对于最大限度地提高冷却效益和确保公平获取至关重要.
- 迫切需要量化公园规模,冷却影响和可访问性之间的关系.
研究的目的:
- 根据规模,调查城市公园的冷却效应和效率值.
- 评估社区的公园冷却服务的空间可访问性.
- 评估冷却范围可访问性的公平性,并确定影响因素.
主要方法:
- 使用了四个指数:公园冷却强度 (PCI),距离 (PCD),面积 (PCA) 和效率 (PCE).
- 雇员OD矩阵建模用于空间可访问性评估和吉尼系数用于股权分析.
- 应用回归建模来量化影响因素对冷却指标的贡献.
主要成果:
- 平均PCI: 3.27°C,平均PCD: 277m,平均PCA: 115.35ha,平均PCE: 5.74. 平均PCE: 5.74. 平均PCD: 277m,平均PCA: 115.35ha,平均PCE: 5.74. 平均PCE: 3.27°C,平均PCD: 277m,平均PCA: 115.35ha,平均PCE: 5.74. 平均PCE: 5.74.
- 灰色空间区域显著影响PCI,PCD和PCA;公园区域是PCE的关键.
- 园区大小的效率 (TVoE) 值为82.37公 (PCA) 和2.56公 (PCE).
- 39.2% (步行) 和94.01% (过境) 的社区在15分钟内达到冷却范围.
- 严重的冷却范围可访问性不平等影响了大约18%的居民.
结论:
- 园区的大小影响冷却效率和效率,并确定了特定的门值.
- 空间可访问性和冷却服务的公平性在社区之间有很大的差异.
- 结果指导优化公园设计和公平的资源分配,以缓解城市热量.
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