标题：Specific absorption and backscattering coefficients of the main water constituents in Poyang Lake, China作者：Wu, Guofeng; Cui, Lijuan; Duan, Hongtao; Fei, Teng; Liu, Yaolin
来源出版物：ENVIRONMENTAL MONITORING AND ASSESSMENT 卷：185 期：5 页：4191-4206 DOI：10.1007/s10661-012-2861-0出版年：MAY 2013
摘要：Obtaining and analyzing the specific inherent optical properties (SIOPs) of water bodies is necessary for bio-optical model development and remote sensing-based water quality retrievals and, further, for related ecological studies of aquatic ecosystems. This study aimed to measure and analyze the specific absorption and backscattering coefficients of the main water constituents in Poyang Lake,China. The specific absorption and/or backscattering coefficients of the main water constituents at 85 sampling sites (47 in 2010 and 38 in 2011) were measured and analyzed as follows: (1) the concentrations of chlorophyll a (C (CHL)), suspended particulate matter (C (SPM)) (including suspended particulate inorganic matter (C (SPIM)) and suspended particulate organic matter (C (SPOM))), and the absorption coefficients of total particulate (a (p)), phytoplankton (a (ph)), and non-pigment particulate (a (d)) were measured in the laboratory; (2) the total backscattering coefficients at six wavelengths of 420, 442, 470, 510, 590, and 700 nm, including the contribution of pure water, were measured in the field with a HydroScat-6 backscattering sensor, and the backscattering coefficients without the contribution of pure water (b (b)) were then derived by subtracting the backscattering coefficients of pure water from the total backscattering coefficients; (3) the specific absorption coefficients of total particulate (), phytoplankton (), and non-pigment particulate () were calculated by dividing a (p), a (ph), and a (d) by C (SPM), C (CHL), and C (SPIM), respectively, while the specific backscattering coefficients of total suspended particulate matter () were calculated by dividing b (b) by C (SPM); and (4) the , , and of the remaining samples (46 in 2010 and 36 in 2011) were visualized and analyzed, and their relations to C (CHL), C (SPIM) or C (SPM) were studied, respectively. The main results are summarized as follows: (1) the values at 440 nm were 0.0367-0.7203 m(2) mg(-1) with a mean of 0.1623 +/- 0.1426 m(2) mg(-1) in 2010 and 0.0319-0.7735 m(2) mg(-1) with a mean of 0.3145 +/- 0.1961 m(2) mg(-1) in 2011; there existed significant, negative, and moderate correlations between and C (CHL) at 400-700 nm in 2010 and 2011 (p
Such results can only represent the SIOPs during the sampling time periods, and more measurements and analyses considering different seasons need to be carried out in the future to comprehensively understand the SIOPs of Poyang Lake.
作者关键词：Specific inherent optical properties, Specific absorption coefficient, Specific backscattering coefficient, Water constituents, Poyang Lake
扩展关键词：INHERENT OPTICAL-PROPERTIES; SCATTERING PROPERTIES; TAIHU LAKE; COASTAL WATERS; QUALITY; PARTICLES; APPARENT; MODEL; BODY; NM
通讯作者地址：Wu, Guofeng; Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.
[Wu, Guofeng; Fei, Teng; Liu, Yaolin]WuhanUniv, Sch Resource & Environm Sci,Wuhan430079, Peoples RChina.
[Wu, Guofeng; Fei, Teng; Liu, Yaolin]WuhanUniv, Key Lab Geog Informat Syst, Minist Educ,Wuhan430079, Peoples RChina.
[Cui, Lijuan] Chinese Acad Forestry, Inst Wetland Res,Beijing100091, Peoples RChina.
[Duan, Hongtao] Chinese Acad Sci, Nanjing Inst *Geog* & Limnol,StateKeyLabLakeSci & Environm,Nanjing210008, Peoples RChina.
研究方向：Environmental Sciences & Ecology
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