在北湾沿海地区的海洋冷却效应和驱动机制的量化
Zhengyu Qin1, Zuofang Yao1, Yuanle Pan1
1Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, School of Marine Sciences, Guangxi University, Nanning, 530004, China.
Marine environmental research
|January 14, 2026
概括
沿海城市面临着加剧的高温威胁. 这项研究量化了亚热带地区的海洋冷却效应 (MCE) 和其驱动因素,揭示了对城市规划至关重要的季节性动态.
科学领域:
- 环境科学 环境科学
- 城市气候学 城市气候学
- 遥感 遥感 遥感 遥感
背景情况:
- 全球变暖和城市化加剧了城市热岛效应,特别是在沿海地区.
- 了解海洋冷却效应 (MCE) 的季节动态和驱动因素对于亚热带沿海城市至关重要.
- 现有的研究在量化MCE的季节性变化和近海区域的潜在机制方面存在差距.
研究的目的:
- 量化广西北斗湾的海洋冷却强度 (MCI) 和海洋冷却距离 (MCD).
- 分析MCE的时空异质性及其不同季节的驱动机制.
- 为优化城市空间模式提供框架,以增强MCE的气候适应能力.
主要方法:
- 使用了Landsat 8的多时间陆地表面温度数据集.
- 使用的斯皮尔曼相关性,局部空间自相关性 (LISA) 和最佳参数地理探测器 (OPGD) 分析.
- 量化了MCE指标 (MCI,MCD) 并评估了城市空间特征 (灰色,蓝色,绿色空间) 和景观碎片化的影响.
主要成果:
- MCI在夏季达到峰值 (23.75°C),在秋季最低;MCD在春季 (750m) 扩展到内陆最远.
- 高冷却强度集中在港口和密集的城市地区;蓝色和绿色空间显示冷却较弱.
- 灰色空间全年都对MCI产生积极影响;蓝色空间在春天扩展了MCD,而绿色空间通常减少了它. 蓝灰协同效应显著增强了MCI.
结论:
- 季节性变化显著改变了灰色,蓝色和绿色空间如何影响沿海热环境.
- 蓝灰协同作用是提高陆海界面冷却对比度的关键.
- 这些发现为适应气候的城市规划提供了可转移的指标,以最大限度地提高密集的亚热带沿海城市的冷却效益.
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