Different impacts of natural and anthropogenic factors on dissolved organic matter chemistry in coastal rivers: Implications for water management
文献类型：期刊论文
| 作者 | Huang, Lu2,3; Luo, Qianli3; Wei, Gangjian2; Jia, Zhengbo3; Sun, Kaifeng3; Zhao, Changjin1; Yang, Mengdi2,3; Fang, Huaiyang3; Fan, Zhongya3; Zeng, Fantang3 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 368页码:10 |
| 关键词 | Dissolved organic matter Chemical composition FT-ICR-MS Eutrophication Land use Water management |
| ISSN号 | 0301-4797 |
| DOI | 10.1016/j.jenvman.2024.122236 |
| 英文摘要 | The chemical composition of dissolved organic matter (DOM) exerts significant influence on aquatic energy dynamics, pollutant transportation, and carbon storage, thereby playing pivotal roles in the local water quality and regional-global biogeochemical cycling. However, the effects of natural climate change and local human activities on watershed characteristics and in-river processes have led to uncertainties regarding their contributions to DOM chemistry in coastal rivers, creating challenges for effective water management and the study of organic matter cycling. In this investigation, we employed a combination of stable isotopic analysis, optical techniques, and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) to elucidate the sources, optical properties, and molecular composition of DOM in three South China coastal rivers. Our results suggest that terrestrial DOM entering the three rivers through natural or anthropogenic pathways is gradually diluted by in situ primary production as it moves downstream, ultimately being influenced by seawater intrusion near the estuary. Additionally, terrestrial processes influenced by temperature likely govern DOC concentration, while seawater intrusion promotes the natural production of S-containing organic compounds. In contrast, human-altered landcover significantly impacts DOM molecular composition. Increased water areas lead to the enrichment of lignins with high disinfection byproduct formation potential, and agricultural residue burning appears to be the dominant source of pyrogenic DOM in these coastal rivers. Our distinct results suggest that the development of specific water management plans that consider the combined effects of temperature, seawater intrusion, landcover changes, and agricultural practices will be essential to ensure sustainable water resource. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001302916000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80632]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Fan, Zhongya; Zeng, Fantang |
| 作者单位 | 1.Minist Nat Resources, South China Sea Marine Forecast & Hazard Mitigat C, Guangzhou, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 3.Minist Ecol & Environm, South China Inst Environm Sci, Key Lab Water & Air Pollut Control Guangdong Prov, Guangzhou 510535, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Lu,Luo, Qianli,Wei, Gangjian,et al. Different impacts of natural and anthropogenic factors on dissolved organic matter chemistry in coastal rivers: Implications for water management[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2024,368:10. |
| APA | Huang, Lu.,Luo, Qianli.,Wei, Gangjian.,Jia, Zhengbo.,Sun, Kaifeng.,...&Zeng, Fantang.(2024).Different impacts of natural and anthropogenic factors on dissolved organic matter chemistry in coastal rivers: Implications for water management.JOURNAL OF ENVIRONMENTAL MANAGEMENT,368,10. |
| MLA | Huang, Lu,et al."Different impacts of natural and anthropogenic factors on dissolved organic matter chemistry in coastal rivers: Implications for water management".JOURNAL OF ENVIRONMENTAL MANAGEMENT 368(2024):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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