Influence of land cover types and phytoplankton community on the distribution and fate of dissolved organic matter in a typical river located in the semi-arid regions of China
文献类型：期刊论文
| 作者 | Zhang, Yixuan1; Cheng, Dandong1; Ren, Yuanxin1; Song, Jinxi1; Xu, Daliang3; Chen, Rui3; Pang, Rui1; Xia, Jun1,2 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2022-07-01 |
| 卷号 | 610页码:11 |
| 关键词 | Dissolved organic matter Anthropogenic land use Phytoplankton community Mediation analysis Parallel factor analysis |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2022.127818 |
| 通讯作者 | Cheng, Dandong(dcheng@nwu.edu.cn) ; Xia, Jun(xiajun666@whu.edu.cn) |
| 英文摘要 | Land use can impact dissolved organic matter (DOM) dynamics directly by changing terrestrial loading in anthropogenic areas, and indirectly by promoting in-situ phytoplankton production due to the high load of nutrients. However, understanding how land use and phytoplankton community interact to affect DOM quantity and quality is deficient. To tease apart the synergistic effects of land use and phytoplankton on DOM dynamics, fluorescence spectroscopy with parallel factor analysis (PARAFAC) and mediation analysis was performed in this study. PARAFAC produced three components that had two humic-like (C1 and C2) and a protein-like (C3) fluorescent components, significantly related to anthropogenic land-use (cropland + urban area) and phytoplankton concentration (p < 0.05). Through the mediation analysis, the altered C1 and C3 at sites with a higher proportion of anthropogenic land-use appeared to originate partly as a result of the phytoplankton production fueled by a high load of nutrients from anthropogenic run-off (26.6% and 12.5%). These results suggested phytoplankton significantly mediated the effects of land use on microbial humic-like and protein-like DOM. Additionally, Redundancy analysis (RDA) results further showed that Phormidium (Cyanophyta) had a notable influence on the production of the protein-like component via phytoplankton. Conversely, the decreases in terrestrial humic-like C2 were mainly attributed to the reduced terrestrial loading in anthropogenic areas. These findings provide insights into the roles of land use and phytoplankton communities in DOM dynamics and advance our understanding of the mechanisms that drive DOM composition patterns. |
| WOS关键词 | EXCITATION-EMISSION MATRIX ; FLUORESCENCE SPECTROSCOPY ; MOLECULAR-WEIGHT ; WEIHE RIVER ; CARBON ; VARIABILITY ; ABSORPTION ; BIOGEOCHEMISTRY ; BIOAVAILABILITY ; ABSORBENCY |
| 资助项目 | National Natural Science Foundation of China[42101085] ; Special Funds of the Na-tional Natural Science Foundation of China[42041004] ; Shaanxi Provincial Education Department[21JK0925] ; Natural Science Basic Research Plan in Shaanxi Province of China[2021JQ-444] ; Shaanxi Province Water Conservancy Science and Technology Project[2021slkj-13] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000803009000006 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Special Funds of the Na-tional Natural Science Foundation of China ; Shaanxi Provincial Education Department ; Natural Science Basic Research Plan in Shaanxi Province of China ; Shaanxi Province Water Conservancy Science and Technology Project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/178564]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Cheng, Dandong; Xia, Jun |
| 作者单位 | 1.Northwest Univ, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm SKL, Harbin 150090, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yixuan,Cheng, Dandong,Ren, Yuanxin,et al. Influence of land cover types and phytoplankton community on the distribution and fate of dissolved organic matter in a typical river located in the semi-arid regions of China[J]. JOURNAL OF HYDROLOGY,2022,610:11. |
| APA | Zhang, Yixuan.,Cheng, Dandong.,Ren, Yuanxin.,Song, Jinxi.,Xu, Daliang.,...&Xia, Jun.(2022).Influence of land cover types and phytoplankton community on the distribution and fate of dissolved organic matter in a typical river located in the semi-arid regions of China.JOURNAL OF HYDROLOGY,610,11. |
| MLA | Zhang, Yixuan,et al."Influence of land cover types and phytoplankton community on the distribution and fate of dissolved organic matter in a typical river located in the semi-arid regions of China".JOURNAL OF HYDROLOGY 610(2022):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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