Title :
The evaluation of water eutrophication using spectrum reflectance at Taihu Lake
Author :
Qing, Xiao ; Jianguang, Wen ; Qinhuo, Liu ; Qinghua, Ye ; Jing, Li
Author_Institution :
LASIS, Chinese Acad. of Sci., Beijing, China
Abstract :
The water quality of Taihu Lake is declining due to eutrophication, and the chlorophyll-laden water becomes an obvious sign. As to reflectance spectra of water vary with concentrations of organic and inorganic sediments, in this paper field reflectance spectra have been applied for monitoring the water quality of Taihu Lake, China. As the key-monitoring index, the chlorophyll-a contents were evaluated by linear spectral unmixing using water and chlorophyll-a endmember spectra of known content the results were compared to laboratory analyses of in situ, water samples.
Keywords :
lakes; remote sensing; sediments; water pollution; China; Taihu Lake; chlorophyll-a content; chlorophyll-a endmember spectra; field reflectance spectra; in situ water sample; laboratory analysis; lake water quality; linear spectral unmixing; organic/inorganic sediment concentrations; spectrum reflectance; water eutrophication; Algae; Content addressable storage; Geology; Laboratories; Lakes; Reflectivity; Remote monitoring; Remote sensing; Sediments; Spectroscopy;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1369095