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城市化,热岛和热舒适之间的相互作用在巴西的João Pessoa
Mirela Oliveira Medeiros1, Luiz Bueno da Silva2, José Francisco de Oliveira Júnior3
1Department of Civil and Environmental Engineering, Federal University of Paraíba, João Pessoa, Brazil. mirela.jpa@gmail.com.
Environmental science and pollution research international
|November 15, 2025
概括
巴西João Pessoa的城市扩张正在增加土地表面的温度,并减少植被覆盖面. 这种城市热岛的强化对公共健康和生活质量构成风险.
科学领域:
- 城市气候学 城市气候学
- 遥感是一种远程传感.
- 环境监测环境监测环境监测
背景情况:
- 城市化对当地热环境产生重大影响,特别是在快速发展的热带城市.
- 了解这些变化对于有效的城市规划和公共卫生战略至关重要.
研究的目的:
- 评估城市化,土地使用动态和巴西João Pessoa的热条件之间的关系.
- 分析陆地表面温度 (LST),NDVI和建筑物 (BU) 指数,以及Thom的不适指数 (DI) 从2013年到2022年.
主要方法:
- 使用Landsat OLI/TIRS卫星图像进行LST,NDVI和BU分析.
- 采用云掩盖和区域统计数据,将远程传感数据与基于站的DI结合起来.
- 分析了土地使用动态及其与四年热量变化的相关性.
主要成果:
- 城市扩张导致LST增加,到2022年达到37°C,并加剧了城市表面热岛.
- 在2013年至2022年期间,全市的植被覆盖面 (NDVI) 显著下降,这表明绿地面积大幅减少.
- 建筑面积的扩张与热量增加相关,而不适指数仍然"部分舒适",但接近值.
结论:
- 由于城市化导致的绿地丧失直接导致了João Pessoa的更高温度和城市热岛效应.
- 紧急实施缓解和预防战略是必要的,以解决对公共卫生和城市宜居性的影响.
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