Spectroscopic fingerprinting of dissolved organicmatter in a constructed wetland-reservoir ecosystem for source water improvement-a case study in Yanlong project, eastern China
文献类型：期刊论文
| 作者 | Li, Xuan; Ma, Weixing; Huang, Tinglin; Wang, Aijie; Guo, Qingyuan; Zou, Lihang; Ding, Cheng |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2021-05-20 |
| 卷号 | 770页码:- |
| 关键词 | River drinking water source DOM Wetland-reservoir ecosystem Water quality purification EEM-PARAFAC UV-Vis |
| ISSN号 | 0048-9697 |
| 英文摘要 | The coupling between constructed wetlands and reservoir (CWs-R) afforded a novel ecosystem to improve the water quality and increase the emergency storage capacity of micro-polluted river drinking water source. In this study, spectroscopic characteristics of DOM in YL CWs-R ecosystem were first systematic studied based on a three-year field monitoring to investigate the chemical composition, sources and track the involved biogeochemical processes in the ecosystem. Three humic-like components (C1, C2, and C4, em >380 nm) and one protein-like component (C3, em < 380 nm) were identified by PARAFAC model. Significant spatiotemporal variations in concentration and composition of FDOM were observed in YL CWs-R ecosystem. The improved water transparency (SD) and, the increased hydraulic retention time (HRT) along YLCWs-R ecosystem enhance photochemical processes, leading to significant decreases in the intensities of humic-like components in effluent (P<0.05) with lower degrees of aromaticity, molecular weights, and humification (decrease in HIX and increases in S-R and BIX). In contrast, no significant spatial difference was observed for protein-like component (P > 0.05), which implies that the biodegradation and production of protein-like component may balance each other in the CWs-R ecosystem. The ecological pond unit plays a major role in the removal and transformation of DOM, especially in summer, while wetland purification unit contributes little to DOM reduction. In addition, the decay of aquatic macrophytes in wetland purification unit and the risk of algal bloom in the ecological pond unit might become important autochthonous sources of DOM, especially in summer and autumn. These findings are critical for further understanding the transformation processes of DOM in large-scale CWs-R ecosystems, and could provide important implications to improve sustainable safety of drinking water sources. (C) 2021 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46155]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 作者单位 | 1.Yancheng Inst Technol, Coll Environm Sci & Engn, Yancheng 224051, Jiangsu, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China 3.Xian Univ Architecture & Technol, MOE, Key Lab Northwest Water Resource Environm & Ecol, Xian 710055, Peoples R China 4.Yancheng Inst Technol, Jiangsu Engn Res Ctr Intelligent Environm Protect, Yancheng 224051, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xuan,Ma, Weixing,Huang, Tinglin,et al. Spectroscopic fingerprinting of dissolved organicmatter in a constructed wetland-reservoir ecosystem for source water improvement-a case study in Yanlong project, eastern China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,770:-. |
| APA | Li, Xuan.,Ma, Weixing.,Huang, Tinglin.,Wang, Aijie.,Guo, Qingyuan.,...&Ding, Cheng.(2021).Spectroscopic fingerprinting of dissolved organicmatter in a constructed wetland-reservoir ecosystem for source water improvement-a case study in Yanlong project, eastern China.SCIENCE OF THE TOTAL ENVIRONMENT,770,-. |
| MLA | Li, Xuan,et al."Spectroscopic fingerprinting of dissolved organicmatter in a constructed wetland-reservoir ecosystem for source water improvement-a case study in Yanlong project, eastern China".SCIENCE OF THE TOTAL ENVIRONMENT 770(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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