Source partitioning using phosphate oxygen isotopes and multiple models in a large catchment
文献类型：期刊论文
| 作者 | Wang, Ziteng6,7; Tian, Liyan5; Zhao, Changqiu6,7; Du, Chenjun6,7; Zhang, Jun6,7; Sun, Fuhong4; Tekleab, Teklit Zerizghi6,7; Wei, Rongfei6,7; Fu, Pingqing3; Gooddy, Daren C.2 |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 244页码:9 |
| ISSN号 | 0043-1354 |
| 关键词 | Source partitioning Phosphate oxygen isotopes Mixed end-element model Bayesian model Catchment P management |
| DOI | 10.1016/j.watres.2023.120382 |
| 通讯作者 | Guo, Qingjun(guoqj@igsnrr.ac.cn) |
| 英文摘要 | Excessive phosphorus (P) loadings cause major pollution concerns in large catchments. Quantifying the point and nonpoint P sources of large catchments is essential for catchment P management. Although phosphate oxygen isotopes (& delta;18O(PO4)) can reveal P sources and P cycling in catchments, quantifying multiple P sources in a whole catchment should be a research focus. Therefore, this study aimed to quantitatively identify the proportions of multiple potential end members in a typical large catchment (the Yangtze River Catchment) by combining the phosphate oxygen isotopes, land use type, mixed end-element model, and a Bayesian model. The & delta;18O(PO4) values of river water varied spatially from 4.9%o to18.3%o in the wet season and 6.0%o to 20.9%o in the dry season. Minor seasonal differences but obvious spatial changes in & delta;18O(PO4) values could illustrate how human activity changed the functioning of the system. The results of isotopic mass balance and the Bayesian model confirmed that controlling agricultural P from fertilizers was the key to achieving P emission reduction goals by reducing P inputs. Additionally, the effective rural domestic sewage treatment, development of composting technology, and resource utilization of phosphogypsum waste could also contribute to catchment P control. P sources in catchment ecosystems can be assessed by coupling an isotope approach and multiple-models. |
| WOS关键词 | PHOSPHORUS CYCLE ; WATER ; SOIL ; EUTROPHICATION ; NITROGEN ; RIVER ; RATIOS ; TRACER |
| 资助项目 | National Natural Science Foundation of China[41890824] ; National Natural Science Foundation of China[41890822] ; National Natural Science Foundation of China[41625006] ; National Natural Science Foundation of China[41761144066] ; National Natural Science Foundation of China[41561144005] ; National Key Research and Development Program of China[2017YFC0212703] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:001072477700001 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/198076]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Guo, Qingjun |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Resource Use & Environm Remediat, Beijing 100101, Peoples R China 2.British Geol Survey, Maclean Bldg, Wallingford OX10 8BB, Oxon, England 3.Tianjin Univ, Sch Earth Syst Sci, Tianjin, Peoples R China 4.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China 5.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Resource Use & Environm Remediat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Ziteng,Tian, Liyan,Zhao, Changqiu,et al. Source partitioning using phosphate oxygen isotopes and multiple models in a large catchment[J]. WATER RESEARCH,2023,244:9. |
| APA | Wang, Ziteng.,Tian, Liyan.,Zhao, Changqiu.,Du, Chenjun.,Zhang, Jun.,...&Guo, Qingjun.(2023).Source partitioning using phosphate oxygen isotopes and multiple models in a large catchment.WATER RESEARCH,244,9. |
| MLA | Wang, Ziteng,et al."Source partitioning using phosphate oxygen isotopes and multiple models in a large catchment".WATER RESEARCH 244(2023):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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