Fluorescence spectroscopy of CDOM in urbanized waters across gradients of development/industrialization of China

doi:10.1016/j.jhazmat.2021.125630

	Fluorescence spectroscopy of CDOM in urbanized waters across gradients of development/industrialization of China
	Shang, Yingxin 1; Song, Kaishan 1,2,4; Jacinthe, Pierre-Andre 3; Wen, Zhidan 1,2; Zhao, Ying 1; Lyu, Lili 1; Fang, Chong 1,5; Li, Sijia 1; Liu, Ge 1,2; Hou, Junbin 1
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2021-08-05
卷号	415 页码:11
ISSN号	0304-3894
DOI	10.1016/j.jhazmat.2021.125630
通讯作者	Song, Kaishan(songkaishan@iga.ac.cn)
英文摘要	The optical signature of chromophoric dissolved organic matter (CDOM) has been related to sources and composition of dissolved organic matter (DOM) in surface waters, but the spatial scope of previous research has been limited to single cities with no studies exploring patterns across gradients of development/industrialization or latitude. Using EEM (excitation emission matrix) techniques, a study was conducted to examine optical properties of CDOM in urban waters along a gradient of urban development (developed and undeveloped cities) and industries (primary, secondary, tertiary). The optical properties of CDOM were measured in 436 water samples collected from urbanized waterbodies spanning 93 cities across China. Results showed marked differences of DOM composition for different level of urban development and for different types of dominant industries. The mean a(CDOM )(254) for developed cities (14.31 m(-1)) was significantly lower (p < 0.05) than that of undeveloped cities (18.01 m(-1)). The intensity of the tryptophan-like component (Q(2)) of CDOM was significantly higher for developed cities (0.98 x 10(10) nm) than for undeveloped cities (4.6 x 10(9) nm), whereas the humiclike component (Q(5) ) intensity was significantly lower for undeveloped cities (19.80 x 10(10) nm) than for developed cities (16.26 x 10(10) nm). Regression analysis showed that the Q(5) component was mainly (and positively) influenced by secondary industries, while Q(2) was mainly affected by both tertiary and secondary industries. The proportion of allochthonous CDOM increased significantly with latitude from south to north with the minimum increased percentage of 67% for humification index (HIX) within different urban development degrees. These findings indicate that changes in urban development, human activities and industrial structure could alter DOM sources and composition in urbanized waterbodies. These findings are relevant to the management of urban water resources in regions experiencing rapid urban and industrial expansion, and add to our understanding of carbon cycling in urbanized freshwater ecosystems.
资助项目	National Key Research and Development Project of China[2019YFC0409105] ; Natural Science Foundation of China[42071336] ; Natural Science Foundation of China[42001311] ; Natural Science Foundation of China[41730104] ; Outstanding Young Scientist Foundation of Institute of Northeast Geography and Agroecology (IGA) ; Special Research Assistant Funding Program of Chinese Academy of Sciences ; China Postdoctoral Science Foundation[2020M681057]
WOS关键词	DISSOLVED ORGANIC-MATTER ; MOLECULAR CHARACTERIZATION ; PARAFAC ANALYSIS ; CARBON ; RIVER ; EXCITATION ; VARIABILITY ; QUALITY ; WASTE ; LAKES
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000657740900005
资助机构	National Key Research and Development Project of China ; Natural Science Foundation of China ; Outstanding Young Scientist Foundation of Institute of Northeast Geography and Agroecology (IGA) ; Special Research Assistant Funding Program of Chinese Academy of Sciences ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164027]
专题	中国科学院地理科学与资源研究所
通讯作者	Song, Kaishan
作者单位	1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China 2.Chinese Acad Sci, Jingyuetan Remote Sensing Observat Stn, Changchun 130102, Peoples R China 3.Indiana Univ Purdue Univ, Dept Earth Sci, Indianapolis, IN 46202 USA 4.Liaocheng Univ, Sch Environm & Planning, Liaocheng 252000, Shandong, Peoples R China 5.Dalian Univ Technol, Fac Infrastruct Engn, Dalian, Peoples R China 6.Minist Housing & Urban Rural Dev Peoples Republ C, Remote Sensing Applicat Ctr, Beijing, Peoples R China 7.China Acad Urban Planning & Design, Xiamen, Peoples R China 8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Shang, Yingxin,Song, Kaishan,Jacinthe, Pierre-Andre,et al. Fluorescence spectroscopy of CDOM in urbanized waters across gradients of development/industrialization of China[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,415:11.
APA	Shang, Yingxin.,Song, Kaishan.,Jacinthe, Pierre-Andre.,Wen, Zhidan.,Zhao, Ying.,...&Zhang, Ning.(2021).Fluorescence spectroscopy of CDOM in urbanized waters across gradients of development/industrialization of China.JOURNAL OF HAZARDOUS MATERIALS,415,11.
MLA	Shang, Yingxin,et al."Fluorescence spectroscopy of CDOM in urbanized waters across gradients of development/industrialization of China".JOURNAL OF HAZARDOUS MATERIALS 415(2021):11.