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关于城市树冠对卢平县热环境影响的研究
Ji-Ping Dai1, Ji-Zheng Qin1, Tianyu Zhou2
1Southwest Forestry University, Kunming, 650224, Yunnan, China.
Scientific reports
|August 16, 2023
概括
城市树冠 (UTC) 显著冷却城市环境. 增加树冠面积和周围范围降低了土地表面温度,面积与冷却速度的相关性更强.
科学领域:
- 城市生态城市生态学
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
背景情况:
- 城市森林是城市生态系统的关键组成部分,影响气候和居民福祉.
- 城市树冠 (UTC) 与城市热环境和生活质量密切相关.
研究的目的:
- 为了研究树冠和中国卢平县的热环境之间的关系.
- 为在类似的山区开发可居住的森林城市提供科学见解.
主要方法:
- 使用eCongnition Developer,ENVI和ArcGIS软件绘制土地表面温度 (LST) 和土地覆盖的地图.
- 选择了63个大型UTC补丁进行分析.
- 采用SPSS软件来探索UTC对城市热环境的监管影响.
主要成果:
- 研究区域的LST温度范围从24.73°C到37.63°C,平均温度为30.83°C.
- 建筑物和不透气的表面构成了最大的土地覆盖类型 (55.76%).
- 平均LST的顺序是:不透气的表面 > 裸露的土地 > 草地 > 树冠 > 水体.
结论:
- 增加树冠斑块的面积和周长可以提高冷却速度并降低内部温度.
- 树冠的面积与冷却速度的关系比周边更密切.
- 周边增加对缓解内部补丁温度有更强的效果,而面积增加的效果较弱.
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