摘要
研究了长江口海域黄色物质（CDOM）的光吸收特性,分析了CDOM浓度、光谱斜率Sg及其与盐度的关系,最后探讨了研究海域CDOM的来源。结果表明：长江口表层水CDOM的吸收系数α（440）变化范围为1.152～8.751 m ^-1,平均为4.9282 m^-1,Sg值的范围分别为0.0034～0.014 nm^-1,平均值为0.0168 nm^-1,盐度与α（440）线性相关性明显（R^2=0.9952）。长江口区黄色物质的来源为长江径流。
The optical absorption properties of CDOM were studied in Changjiang Estuary during Mar. 2006. Based on the results, the CDOM concentrations α（440）and spectrum slope were analyzed and the relationships between salinity and them were discussed, α （440） varied obviously , from 1.152 to 8.751 m^-1 , while the average value is 4. 9282 m^-1. The spectral slope Sg varied from 0. 0034 to 0. 014 nm^-1 , and the average value is 0. 0168 nm^-1 . a good correlative relationship between salinity and α（440 ） was found. Finally, the source of CDOM was discussed.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2008年第6期629-631,646,共4页
Marine Environmental Science
基金
上海市908专项(908-PJ1-2,908-ST01、ST02)
上海市高校高水平特色发展项目(6870307)
关键词
黄色物质
吸收系数
光谱斜率
长江口
chromophoric dissolvable organic matter （CDOM）
spectral absorption coefficient
spectral slope
Changjiang Estuary
