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Absorption characteristics of CDOM in treated and non-treated urban lakes in Changchun, China
Lyu, Lili1; Wen, Zhidan1; Jacinthe, Pierre-Andre2; Shang, Yingxin1,3; Zhang, Ning5,6; Liu, Ge1; Fang, Chong1,3; Hou, Junbin1; Song, Kaishan1,4
2020-03-01
Source PublicationENVIRONMENTAL RESEARCH
ISSN0013-9351
Volume182Pages:13
Corresponding AuthorSong, Kaishan(songks@neigae.ac.cn)
AbstractIn urban settings, one may find (i) lakes that are non-treated (NT) and impacted by recurrent discharges of pollutants and nutrients, and (ii) lakes that, through restoration measures and active management, are treated (T) from external inputs. The optical properties of chromophoric dissolved organic matter (CDOM) have been used to assess the anthropogenic impact on lakes ecology, but their application in comparative assessments of urban lakes has not been attempted. For 2 years, we measured nutrients and CDOM properties in water samples collected from NT and T lakes in the city of Changchun, China. Significant differences in CDOM properties were found between the two types of lakes, and these results were supported by redundancy analysis. The NT lakes were eutrophic while the T lakes were mesotrophic, with mean trophic status index (TSI) of 74.2 and 50.3, respectively. The CDOM absorption coefficient at 350 nm, a(350), was 2-fold higher in NT than in T lakes (6.59 vs 3.21 m(-1)). In the NT lakes, CDOM components predominantly comprised large molecular weight (MW > 1000-Da) humus-like substances of allochthonous origin, whereas in the T lakes CDOM was dominated by low MW (< 1000-Da) substances from autochthonous production. Seasonal fluctuation has a great influence on the CDOM concentration, but a little influence on its molecular composition. The CDOM concentration were higher in summer than in other seasons. Weather conditions (rainfall, temperature) and biophysical processes (biodegradation, photo-bleaching) likely contributed to these variations. We found the water quality of the treated lakes was getting better from 2016 to 2018. In summary, the study results, not only revealed seasonal effects, but most importantly documented the impact of human activities on the characteristics of CDOM in urban lakes. Most specifically, the sharp difference between the lakes in regard to a(350) (2-fold lower in T than in NT lakes) demonstrated the suitability CDOM absorption coefficient as an early indicator of the impact of treatment measures on the hydrochemistry of DOM in urban lakes.
KeywordUrban lakes CDOM Human activities Seasons Antecedent rainfall
DOI10.1016/j.envres.2019.109084
WOS KeywordDISSOLVED ORGANIC-MATTER ; EMISSION MATRIX FLUORESCENCE ; OPTICAL-PROPERTIES ; WATER-QUALITY ; MOLECULAR SIGNATURES ; YELLOW SUBSTANCE ; TROPHIC STATE ; RIVER ; BAY ; CARBON
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFB0503902] ; National Natural Science Foundation of China[41730104] ; National Natural Science Foundation of China[41701423] ; Outstanding Yong Scientist Foundation of Institute of Northeast Geography and Agroecology (IGA), Chinese Academy of Sciences ; Academician workstation project of Chifeng university[cfxyys201702]
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Outstanding Yong Scientist Foundation of Institute of Northeast Geography and Agroecology (IGA), Chinese Academy of Sciences ; Academician workstation project of Chifeng university
WOS Research AreaEnvironmental Sciences & Ecology ; Public, Environmental & Occupational Health
WOS SubjectEnvironmental Sciences ; Public, Environmental & Occupational Health
WOS IDWOS:000516094400117
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/159813
Collection中国科学院地理科学与资源研究所
Corresponding AuthorSong, Kaishan
Affiliation1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China
2.Indiana Univ Purdue Univ, Dept Earth Sci, Indianapolis, IN 46202 USA
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Liaocheng Univ, Sch Environm & Planning, Liaocheng 252000, Shandong, Peoples R China
5.Minist Housing & Urban Rural Dev Peoples Republ C, Remote Sensing Applicat Ctr, Urban Rural Planning Adm Ctr, Beijing, Peoples R China
6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Lyu, Lili,Wen, Zhidan,Jacinthe, Pierre-Andre,et al. Absorption characteristics of CDOM in treated and non-treated urban lakes in Changchun, China[J]. ENVIRONMENTAL RESEARCH,2020,182:13.
APA Lyu, Lili.,Wen, Zhidan.,Jacinthe, Pierre-Andre.,Shang, Yingxin.,Zhang, Ning.,...&Song, Kaishan.(2020).Absorption characteristics of CDOM in treated and non-treated urban lakes in Changchun, China.ENVIRONMENTAL RESEARCH,182,13.
MLA Lyu, Lili,et al."Absorption characteristics of CDOM in treated and non-treated urban lakes in Changchun, China".ENVIRONMENTAL RESEARCH 182(2020):13.
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