Fluorescent components and spatial patterns of chromophoric dissolved organic matters in Lake Taihu, a large shallow eutrophic lake in China
文献类型：期刊论文
| 作者 | Yao B(姚波); Hu CM(胡春明) ; Liu QQ(刘青泉)
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| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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| 出版日期 | 2016 |
| 卷号 | 23期号:22页码:23057-23070 |
| 通讯作者邮箱 | yaobo@imech.ac.cn |
| 关键词 | PARAFAC CDOM Spatial heterogeneity Vertical difference Hydrodynamics |
| ISSN号 | 0944-1344 |
| 产权排序 | [Yao, Bo] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; [Hu, Chunming] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China; [Liu, Qingquan] Beijing Inst Technol, Sch Aerosp Engn, Dept Mech, Beijing 100081, Peoples R China |
| 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. |
| 中文摘要 | 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. |
| 分类号 | 二类 |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | PARAFAC ; CDOM ; Spatial heterogeneity ; Vertical difference ; Hydrodynamics |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1007/s11356-016-7510-7 |
| 语种 | 英语 |
| WOS记录号 | WOS:000387602800074 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59954]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 推荐引用方式 GB/T 7714 | Yao B,Hu CM,Liu QQ. 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. |
| APA | 姚波,胡春明,&刘青泉.(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. |
| 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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来源：力学研究所
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