在巴西半干旱地区使用遥感建模水质:支持水资源管理
Ester Milena Dos Santos1, Jocimar Coutinho Rodrigues Junior2, Ubiratan Joaquim da Silva Junior1
1Graduate Program in Civil Engineering (PPGEC), Federal University of Pernambuco, Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, Brazil.
Environmental monitoring and assessment
|July 10, 2025
概括
遥感有效监测巴西的水库水质.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 水资源管理 水资源管理
背景情况:
- 半干旱地区面临严重的水资源短缺,需要持续监测水质.
- 有效的水资源管理策略对于这些脆弱的生态系统至关重要.
- 储水库质量分析对于可持续利用水资源至关重要.
研究的目的:
- 评估遥感技术,以评估巴西半干旱地区的水库水质.
- 为了将卫星频谱带与关键的水质参数相关联.
- 支持明智的水资源管理决策和环境保护工作.
主要方法:
- 利用Landsat-8和Sentinel-2卫星数据进行光谱分析.
- 开发了多重回归模型,使用逐步方法来预测叶绿素a和总.
- 分析了沿水库边缘的土地使用模式及其对水质的影响.
主要成果:
- 与Sentinel-2相比,Landsat-8显示出更高的性能 (Chl-a的R2=0.81,TP的R2=0.72) 与Sentinel-2相比.
- 在可见和近红外频段,Landsat-8的信号噪声比较高提高了预测模型的准确性.
- 减少的牧场面积与稳定的总含量相关,尽管季节性超标.
结论:
- 遥感,特别是Landsat-8,是监测半干旱环境中的水库水质的宝贵工具.
- 综合监测将遥感和土地使用数据结合起来,对于有效的水资源管理至关重要.
- 未来的研究应该探索机器学习和超频谱遥感,以提高准确性.
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