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引用本文:杨顶田,陈伟民,吴生才,朱广伟,张运林,曹文熙.湖泊中有色可溶性物质对近紫外及蓝光衰减的影响.湖泊科学,2003,15(3):269-274. DOI:10.18307/2003.0312
YANG Dingtian,CHEN Weimin,WU Shengcai,ZHE Guangwei,ZHANG Yunlin,CAO Wenxi.The Effects of CDOC on the Attenuation of Close Ultraviolet and Blue Light in Chaohu Lake and Longgan Lake. J. Lake Sci.2003,15(3):269-274. DOI:10.18307/2003.0312
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湖泊中有色可溶性物质对近紫外及蓝光衰减的影响
杨顶田1,2, 陈伟民1, 吴生才1,2, 朱广伟1, 张运林1,2, 曹文熙3
1.中国科学院南京地理与湖泊研究所, 南京 210008;2.中国科学院研究生院 100039;3.中国科学院南海海洋研究所, 广州 510301
摘要:
研究巢湖(藻型湖泊)和龙感湖(草型湖泊)的有色可溶性物质(CDOC)对近紫外及蓝光衰减的影响时发现:巢湖水体中可溶性有机碳含量比龙感湖大. 2个湖泊中来源不同的可溶性有机碳对光的吸收极其相似,只是在量上有差异. 在巢湖水体中,光的衰减曲线在355-400nm之间有一个峰,且Kd值较大,而在龙感湖水体中,光的衰减曲线在500nm以下时随着波长的递减而增加. 从CDOC对Kd的贡献来看,它们之间最大的相关是在355nm左右,这是悬浮质、叶绿素以及CDOC共同作用的结果.
关键词:  巢湖  龙感湖  有色可溶性物质  光衰减
DOI:10.18307/2003.0312
分类号:
基金项目:中国科学院知识创新工程重大项目(KZCX1-SW-12);国家自然科学基金(40076012)联合资助.
The Effects of CDOC on the Attenuation of Close Ultraviolet and Blue Light in Chaohu Lake and Longgan Lake
YANG Dingtian1,2, CHEN Weimin1, WU Shengcai1,2, ZHE Guangwei1, ZHANG Yunlin1,2, CAO Wenxi3
1.Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, P. R. China;2.Graduate School of CAS, Beijing 100039, P. R. China;3.Institute of South China Sea, CAS, Guangzhou 510301, P. R. China
Abstract:
The effects of CDOC on the attenuation of close ultraviolet and blue light in Chaohu Lake and Longgan Lake were studied. Results revealed that the difference of soluble TC in two lakes was not significant, but CTOC in Chaohu Lake was larger than that of Longgan Lake. The absorb curve of CDOC with different sources was similar except for difference in quantity. In Chaohu Lake, there could be observed a peak between 355-400nm on the attenuation curve and Kd was larger, while in Longgan Lake, the attenuation curve was increased with decreasing wavelengths under 500 nm. The best relationship between Kd and CDOC was at 355 nm as the result of co-effect of suspended solids, Chlorophyll and CDOC.
Key words:  Chaohu Lake  Longgan Lake  CDOC  light attenuation
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