Legacy phosphorus delays the accomplishment of expected phosphorus management object
文献类型：期刊论文
| 作者 | Wang, Ziteng1,2; Guo, Qingjun1,2; Wei, Rongfei1,2 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 345页码:6 |
| 关键词 | Legacy phosphorus Phosphorus management Restoration time Watershed phosphorus storage threshold |
| ISSN号 | 0301-4797 |
| DOI | 10.1016/j.jenvman.2023.118883 |
| 通讯作者 | Guo, Qingjun(guoqj@igsnrr.ac.cn) |
| 英文摘要 | Legacy phosphorus (P) in watersheds continuously affects the water quality. The time lag between anthropogenic P input and algal bloom has made P dynamics prediction in aquatic ecosystems more challenging. Whether the legacy P in the Yangtze River Watershed (YRW) exceeds its storage threshold remains unknown, and the continuous impact of legacy P on the water quality has not been analyzed. This study aimed to evaluate variation trends (1970-2018) and influencing factors for accumulated P in the YRW under different economic development periods, quantitatively identify the watershed P storage threshold based on the two split line models and estimate the time required for the return of legacy P to the baseline level using an exponential decay process. The results showed that the P storage threshold of the YRW was surpassed due to intense anthropogenic activities, and the residual P still had an impact on aquatic ecosystems for a long time. The dissolved total P loadings may become the top priority to achieve better P management goals. The time lags for the legacy P restoration would require for about 1000 years to be exhausted. The legacy P in the YRW would continuously undermine the restoration efforts of the water quality. The combined effects of watershed P surplus reductions and depletion of residual P may become essential to better manage P in the future. We still need to strengthen our efforts to make soil legacy P more absorbed by crops and improve sewage treatment capacity to achieve sustainable development of YRW. |
| WOS关键词 | SOILS |
| 资助项目 | National Natural Science Foundation of China[41890824] ; National Natural Science Foundation of China[41890822] ; National Natural Science Foundation of China[42073012] ; National Key Research and Development Program of China[2022YFC3701303] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001075693300001 |
| 出版者 | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
| 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/311030/198466]  |
| 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, Inst Geog Sci & Nat Resources Res, Key Lab Resource Use & Environm Remediat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Ziteng,Guo, Qingjun,Wei, Rongfei. Legacy phosphorus delays the accomplishment of expected phosphorus management object[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2023,345:6. |
| APA | Wang, Ziteng,Guo, Qingjun,&Wei, Rongfei.(2023).Legacy phosphorus delays the accomplishment of expected phosphorus management object.JOURNAL OF ENVIRONMENTAL MANAGEMENT,345,6. |
| MLA | Wang, Ziteng,et al."Legacy phosphorus delays the accomplishment of expected phosphorus management object".JOURNAL OF ENVIRONMENTAL MANAGEMENT 345(2023):6. |
入库方式： OAI收割
来源：地理科学与资源研究所
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