Organic phosphorus regeneration enhanced since eutrophication occurred in the sub-deep reservoir | |
Jia Yu; Yan Zeng![]() ![]() ![]() ![]() | |
2022 | |
Source Publication | Environmental Pollution
![]() |
Volume | 306Pages:119350 |
Abstract | Lake eutrophication remains a serious environmental problem of global significance, and phosphorus (P) plays a key role in lake eutrophication. Internal P loading, as a result of P release from sediments, is gathering more and more recognition as an important source governing the P availability in these ecosystems. Anoxic condition can promote the release of P associated with Fe oxides, which has already been a consensus. However, it is still unknown whether the anoxic conditions induced by eutrophication act to intensify or weaken the regeneration of organic P (Porg) in sediments. We selected the Hongfeng Reservoir, a typical sub-deep lake, to study the regeneration behaviours of C and P in the sediments buried before and after eutrophication. The results showed that Porg did not significantly increase with the rapid increase in organic C (Corg) since eutrophication occurred. Furthermore, the organic C/P ratio was much higher in sediments buried after eutrophication than in those buried before, which indicated that Porg regeneration had been significantly enhanced since eutrophication occurred. Based on C/P ratios, our estimation suggested that the Porg regeneration and P release from sediment to water approximately enhanced 45.2% ± 8.7% and 34.5% ± 9.8%, respectively. Elevated primary productivity (algae) and the corresponding hypoxic/anoxic condition, both caused by eutrophication, promoted P biogeochemical cycle in the sub-deep reservoir. This study further verifies the significant contribution of regenerated Porg to the internal P load, and highlights the importance of controlling P release from sediments in order to restore clear water ecosystems in sub-deep lakes or reservoirs. |
Keyword | Eutrophication Sub-deep Lake Organic Phosphorus Organic Matter Degradation C/p Ratios |
DOI | 10.1016/j.envpol.2022.119350 |
URL | 查看原文 |
Indexed By | SCI |
Language | 英语 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/13432 |
Collection | 环境地球化学国家重点实验室 |
Affiliation | 1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China 2.University of Chinese Academy of Sciences, Beijing, 100049, China |
Recommended Citation GB/T 7714 | Jia Yu,Yan Zeng,Jingan Chen,et al. Organic phosphorus regeneration enhanced since eutrophication occurred in the sub-deep reservoir[J]. Environmental Pollution,2022,306:119350. |
APA | Jia Yu,Yan Zeng,Jingan Chen,Peng Liao,Haiquan Yang,&Chao Yin.(2022).Organic phosphorus regeneration enhanced since eutrophication occurred in the sub-deep reservoir.Environmental Pollution,306,119350. |
MLA | Jia Yu,et al."Organic phosphorus regeneration enhanced since eutrophication occurred in the sub-deep reservoir".Environmental Pollution 306(2022):119350. |
Files in This Item: | Download All | |||||
File Name/Size | DocType | Version | Access | License | ||
Organic phosphorus r(7389KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment