IMECH-IR  > 流固耦合系统力学重点实验室
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.
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
2016
Volume23Issue:22Pages:23057-23070
ISSN0944-1344
AbstractWater 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.
KeywordParafac Cdom Spatial Heterogeneity Vertical Difference Hydrodynamics
DOI10.1007/s11356-016-7510-7
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000387602800074
WOS KeywordPARAFAC ; CDOM ; Spatial heterogeneity ; Vertical difference ; Hydrodynamics
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Funding OrganizationNational Natural Science Foundation of China [11202217]
DepartmentLMFS水环境流体力学(LEM)
Classification二类
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59954
Collection流固耦合系统力学重点实验室
Corresponding AuthorYao, B (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Recommended Citation
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.
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.
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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