评估COVID-19封锁对受严重影响的旅游目的地的沿海水质的影响,使用Sentinel-2多谱数据
Francisco Flores-de-Santiago1, Felipe Amezcua2, Ranulfo Rodríguez-Sobreyra1
1Instituto de Ciencias del Mar y Limnología, Unidad Académica Procesos Oceánicos y Costeros, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México, Mexico.
PloS one
|October 30, 2025
概括
卫星遥感显示,在COVID-19封锁期间,沿海水质发生了重大变化. 对水指数的分析显示了不同沿海地区有机物和悬浮物质的不同模式.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 海洋学 海洋学 海洋学
背景情况:
- 在全球范围内,COVID-19封锁限制了个人环境监测.
- 卫星遥感在疫情期间为环境研究提供了关键数据.
- 沿海水质对于旅游目的地和生态系统健康至关重要.
研究的目的:
- 用Sentinel-2数据分析墨西哥旅游海岸的空间水质变化.
- 将COVID-19封锁期间 (2020) 的水质指数与大流行前 (2019) 和大流行后 (2021-2022) 期间进行比较.
- 为了确定封锁对不同沿海土地覆盖类别的具体影响.
主要方法:
- 使用 Sentinel-2 卫星数据来得出水位指数:CDOM,CHLA,TSMC2 和 TSM_Clear.
- 应用主要坐标分析 (PCoA) 来评估土地覆盖类别的水质变化.
- 采用主要坐标规范分析 (CAP) 和基于距离的冗余分析 (dbRDA) 来评估时间和空间的变化.
主要成果:
- 在流行病前,流行病前和流行病后期间观察到水质的显著差异.
- 在封锁期间,污水和港口地区显示CHLA下降,TSMC2增加.
- 在疫情后的几年里,红树林的CDOM减少了,而旅游和工业区的CDOM在2020年减少了.
结论:
- Sentinel-2的高分辨率和重新访问时间对于监测沿海水质动态是有效的.
- COVID-19封锁影响了沿海水质,不同区域的影响各不相同.
- 遥感是环境监测中不可或缺的工具,尤其是在有限的时间内.
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