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	Water quality monitoring in a slightly-polluted inland water body through remote sensing - case study of the Guanting reservoir in Beijing, China
	Weiqi He ; Shan Chen ; Xuehua Liu ; Jining Chen
	2010-10-12 ; 2010-10-12
关键词	Practical Theoretical or Mathematical/ condition monitoring remote sensing reservoirs water quality/ water quality monitoring slightly-polluted inland water body remote sensing Guanting reservoir Beijing China auxiliary drinking water source Landsat 5 Thematic Mapper data water quality retrieval model algae content turbidity chemical oxygen demand total nitrogen ammonia nitrogen nitrate nitrogen total phosphorus dissolved phosphorus/ B7720 Pollution detection and control E0230 Environmental issues E1610 Inspection and quality control
中文摘要	This study focused on the water quality of the Guanting Reservoir, a possible auxiliary drinking water source for Beijing. Through a remote sensing (RS) approach and using Landsat 5 Thematic Mapper (TM) data, water quality retrieval models were established and analyzed for eight common water quality variables, including algae content, turbidity, and concentrations of chemical oxygen demand, total nitrogen, ammonia nitrogen, nitrate nitrogen, total phosphorus, and dissolved phosphorus. The results show that there exists a statistically significant correlation between each water quality variable and remote sensing data in a slightly-polluted inland water body with fairly weak spectral radiation. With an appropriate method of sampling pixel digital numbers and multiple regression algorithms, retrieval of the algae content, turbidity, and nitrate nitrogen concentration was achieved within 10% mean relative error, concentrations of total nitrogen and dissolved phosphorus within 20%, and concentrations of ammonia nitrogen and total phosphorus within 30%. On the other hand, no effective retrieval method for chemical oxygen demand was found. These accuracies were acceptable for the practical application of routine monitoring and early warning on water quality safety with the support of precise traditional monitoring. The results show that performing the most traditional routine monitoring of water quality by RS in relatively clean inland water bodies is possible and effective.
语种	英语
出版者	Springer Verlag ; Germany
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79800]
专题	清华大学
推荐引用方式 GB/T 7714	Weiqi He,Shan Chen,Xuehua Liu,et al. Water quality monitoring in a slightly-polluted inland water body through remote sensing - case study of the Guanting reservoir in Beijing, China[J],2010, 2010.
APA	Weiqi He,Shan Chen,Xuehua Liu,&Jining Chen.(2010).Water quality monitoring in a slightly-polluted inland water body through remote sensing - case study of the Guanting reservoir in Beijing, China..
MLA	Weiqi He,et al."Water quality monitoring in a slightly-polluted inland water body through remote sensing - case study of the Guanting reservoir in Beijing, China".(2010).

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