| Fluorescent components and spatial patterns of chromophoric dissolved organic matters in Lake Taihu, a large shallow eutrophic lake in China |
| Yao B(姚波); Hu CM(胡春明) ; Liu QQ(刘青泉); Yao, B (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
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| 发表期刊 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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| 2016
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| 卷号 | 23期号:22页码:23057-23070 |
| ISSN | 0944-1344
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| 摘要 | Water samples at both surface and bottom layers were taken from 102 sites in Lake Taihu to study the fluorescent components and spatial patterns of chromophoric dissolved organic matters (CDOM). Three-dimensional excitation-emission matrix data obtained from the samples were analyzed by parallel factor approach in which four humic-like and two protein-like fluorescent components (named C1-C6) were identified. The results showed that fluorescence intensities were higher in the northern and western lake regions, and notable declines of fluorescence maxima (F (max)) were observed from the northwest to the center and then to the southeast of the lake. Calculated biological index (BIX) values ranged from 0.88 to 1.44 and humification index (HIX) values from 0.64 to 3.37 for all the samples. The spatial variations of BIX and HIX values suggested stronger allochthonous CDOM characteristics in Zhushan Bay and the western area and autochthonous characteristics in the southern and eastern areas. Vertically, the average F (max) value of the surface samples was about 6 % less than that of the bottom samples, but noticeable variations existed among different sampling sites and components. These distribution characteristics of CDOM were mainly attributed to the spatial heterogeneity of sources and wind-induced transportation process. Interestingly, the C6 component (Ex(max)/Em(max) = 250/455 nm) seemed to be unique in samples from Zhushan Bay and probably resulted from the discharge of the Taige River. Therefore, it could be used as an indicator of point-source discharge and a tracer to study the fate of CDOM in the lake. |
| 关键词 | Parafac
Cdom
Spatial Heterogeneity
Vertical Difference
Hydrodynamics
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| DOI | 10.1007/s11356-016-7510-7
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000387602800074
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| 关键词[WOS] | PARAFAC
; CDOM
; Spatial heterogeneity
; Vertical difference
; Hydrodynamics
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| WOS研究方向 | Environmental Sciences & Ecology
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| WOS类目 | Environmental Sciences
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| 项目资助者 | National Natural Science Foundation of China [11202217]
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| 课题组名称 | LMFS水环境流体力学(LEM)
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| 论文分区 | 二类
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/59954
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| 专题 | 流固耦合系统力学重点实验室
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| 通讯作者 | Yao, B (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. |
推荐引用方式
GB/T 7714 |
Yao B,Hu CM,Liu QQ,et al. Fluorescent components and spatial patterns of chromophoric dissolved organic matters in Lake Taihu, a large shallow eutrophic lake in China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23,22,:23057-23070.
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| APA |
姚波,胡春明,刘青泉,&Yao, B .(2016).Fluorescent components and spatial patterns of chromophoric dissolved organic matters in Lake Taihu, a large shallow eutrophic lake in China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(22),23057-23070.
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| MLA |
姚波,et al."Fluorescent components and spatial patterns of chromophoric dissolved organic matters in Lake Taihu, a large shallow eutrophic lake in China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.22(2016):23057-23070.
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