| 太湖水体光学衰减系数的特征及参数化 |
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| 引用本文： | 张运林,秦伯强,陈伟民,杨顶田.太湖水体光学衰减系数的特征及参数化[J].海洋与湖沼,2004,35(3):209-213. |
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| 作者姓名： | 张运林 秦伯强 陈伟民 杨顶田 |
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| 作者单位： | 1. 中国科学院南京地理与湖泊研究所,南京,210008;中国科学院研究生院,北京,100039
2. 中国科学院南京地理与湖泊研究所,南京,210008 |
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| 基金项目： | 中国科学院知识创新工程项目，KZCX1 SW1 2号和KZCX2 31 1号 |
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| 摘 要： | 利用2001-2002年周年太湖全湖不同湖区湖泊光学及表层水样的实测资料，分析了太湖水体表层光学衰减系数与透明度、无机和有机颗粒物质及叶绿素a的相关关系，建立了表层水光学衰减系数与无机、有机颗粒物质及叶绿素a多元线性回归方程。结果表明，光学衰减系数与透明度的关系为：Kdg0.096 1.852/ST；表层水光学衰减系数与无机、有机颗粒物质及叶绿素a多元线性回归方程为：Kd=0.219 0.0768Ciss 0.214Cdet 0.006Cchl；光学衰减系数变化的主要影响因子是无机及有机颗粒物。
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| 关 键 词： | 光学衰减系数 无机颗粒 有机颗粒 叶绿素a |
| 收稿时间： | 2002/7/22 0:00:00 |
| 修稿时间： | 2002年7月22日 |
REGRESSION ANALYSIS OF BEAM ATTENUATION COEFFICIENT UNDER WATER IN LAKE TAIHU |
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| ZHANG Yun-Lin,QIN Bo-Qiang,CHEN Wei-Min and YANG Ding-Tian.REGRESSION ANALYSIS OF BEAM ATTENUATION COEFFICIENT UNDER WATER IN LAKE TAIHU[J].Oceanologia Et Limnologia Sinica,2004,35(3):209-213. |
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| Authors: | ZHANG Yun-Lin QIN Bo-Qiang CHEN Wei-Min and YANG Ding-Tian |
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| Abstract: | The effects of the most important factors contributing to the attenuation of light under water in Lake Taihu were described. Empirical relations and differences in the attenuation coefficient, secchi disc transparency, total suspended matter, organic and mineral contents of the suspended matter and chlorophyll a were analyzed in Lake Taihu water, based on the in situ investigation data obtained during the period from 2001 to 2002. The multiple linear regression formula is presented including the attenuation coefficient, inorganic suspended matter, organic suspended matter and chlorophyll a . The results are thus: the attenuation coefficient and secchi disc transparency are illustrated below K d=0 096+1 852ST ; The multiple regression equation based on the surface water samples is: K d =0 219+0 0768 C iss +0 214 C det +0 006 C chl . In large, shallow lakes such as Lake Taihu, the largest contribution to under water light attenuation often originates not from phytoplankton but from suspended matter. The contribution of chlorophyll a to the attenuation coefficient is higher in eutrophic zones during periods of algae bloom. |
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| Keywords: | Beam attenuation coefficient Inorganic suspended matter Organic suspended matter Chlorophyll a |
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