相关实验视频
Updated: Jul 14, 2026
12:44
Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
8.0K
光谱环境因素集成集体学习城市河流网络水质遥感
Xiaoteng Zhou1, Chun Liu2, Daniela Carrion3
1College of Surveying and Geo-informatics, Tongji University, 1239 Siping Rd., Shanghai, 200092, China; Department of Civil and Environmental Engineering, Politecnico di Milano, Piazza Leonardo Da Vinci 32, Milan, 20133, Italy.
Water research
|October 9, 2024
概括
本研究引入了一种综合模型,用于对城市河流水质量进行遥感. 新的光谱环境模型提高了复杂的河流网络的准确性和概括性.
科学领域:
- 环境科学 环境科学
- 遥感技术 遥感技术 遥感技术
- 水质监测 水质监测
背景情况:
- 传统的水质监测缺乏时空动态.
- 现有的遥感模型与复杂的城市河流网络作斗争.
- 城市河流面临着独特的水质挑战,原因是不同的功能区.
研究的目的:
- 为城市河水质量逆转开发一个改进的遥感模型.
- 整合光谱和环境因素,以提高监测准确度.
- 评估模型在复杂的城市河流系统中的概括能力.
主要方法:
- 在上海收集水质参数和光谱反射率的现场数据.
- 分析了水质,光谱和环境因素 (温度,降雨量) 之间的相关性.
- 开发了一个光谱环境因素综合合体学习模型.
主要成果:
- 综合模型显示精度提高 (R2增加了~0.50) 超过仅光谱模型.
- 在多光谱图像上进行测试时,该模型实现了TP,NH3-N和COD的R2值为0.47-0.58.
- 在不同的城市河流地区展示了坚实的准确性和概括性.
结论:
- 频谱环境组合模型为城市河流水质逆转提供了一种新的方法.
- 这种方法有效地解决了传统和仅光谱遥感技术的局限性.
- 该模型为管理复杂的城市水生环境中的水质提供了有价值的工具.
相关概念视频
01:19Quality of Water
In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...
01:30Environmental Applications of Microorganisms
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...