Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR025941 |
Kinetic Exchange of Remobilized Phosphorus Related to Phosphorus-Iron-Sulfur Biogeochemical Coupling in Coastal Sediment | |
Pan, Feng1; Guo, Zhanrong1; Cai, Yu1; Liu, Huatai2; Wu, Jinye1; Fu, Yuyao1; Wang, Bo1; Gao, Aiguo1,3 | |
2019-12-10 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:12页码:10494-10517 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Phosphorus (P) cycling in coastal sediment can be strongly coupled to iron (Fe) and sulfur (S) geochemical transformations. In this study, the high-resolution dialysis (HR-Peeper) and diffusive gradients in thin films (DGT) techniques were employed to synchronously characterize the in situ P-Fe-S biogeochemistry in coastal sediments around Xiamen Bay, China. The results show that P remobilization is mainly controlled by dissimilatory Fe reduction in the Jiulong River Estuary (JE) and the eastern coast of Xiamen Bay (EX), while it is dominated by sulfate reduction in the Jiuxi River Estuary. The confined oxidizing depth and the higher DGT-labile S and soluble Fe (II) concentrations in October indicate that the hypoxia induced by tides and river runoff has a greater effect on sulfate reduction and Fe reduction than high temperatures in July, which accelerate P remobilization and exchange flux. Model simulations of the P resupply and adsorption/desorption kinetics demonstrate that the enhancement of Fe reduction and sulfate reduction triggered by hypoxia promotes the continuous release of P. Both DGT-labile P and S presented distinct distribution patterns in crab burrows during flood tide and ebb tide. A negative P exchange flux to the overlying water controlled by Fe (III) retention at JE and a positive P exchange flux controlled by intense sulfate reduction at EX were observed, both of which were significantly higher than the molecular diffusion flux. We suggest that internal P loading related to Fe and S redox geochemistry should receive more attention, especially in the context of expanding global marine hypoxia. |
英文关键词 | phosphorus remobilization phosphorus exchange flux iron reduction sulfate reduction crab burrow biogeochemistry |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000501670200001 |
WOS关键词 | DISSOLVED REACTIVE PHOSPHORUS ; PORE-WATER ; IN-SITU ; DIFFUSIVE GRADIENTS ; THIN-FILMS ; SULFATE REDUCTION ; SOLUTE FLUXES ; FERROUS IRON ; BALTIC SEA ; PHOSPHATE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/223969 |
专题 | 资源环境科学 |
作者单位 | 1.Xiamen Univ, Coll Ocean & Earth Sci, Xiamen, Fujian, Peoples R China; 2.Xiamen Univ, Coll Environm & Ecol, Xiamen, Fujian, Peoples R China; 3.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Fujian, Peoples R China |
推荐引用方式 GB/T 7714 | Pan, Feng,Guo, Zhanrong,Cai, Yu,et al. Kinetic Exchange of Remobilized Phosphorus Related to Phosphorus-Iron-Sulfur Biogeochemical Coupling in Coastal Sediment[J]. WATER RESOURCES RESEARCH,2019,55(12):10494-10517. |
APA | Pan, Feng.,Guo, Zhanrong.,Cai, Yu.,Liu, Huatai.,Wu, Jinye.,...&Gao, Aiguo.(2019).Kinetic Exchange of Remobilized Phosphorus Related to Phosphorus-Iron-Sulfur Biogeochemical Coupling in Coastal Sediment.WATER RESOURCES RESEARCH,55(12),10494-10517. |
MLA | Pan, Feng,et al."Kinetic Exchange of Remobilized Phosphorus Related to Phosphorus-Iron-Sulfur Biogeochemical Coupling in Coastal Sediment".WATER RESOURCES RESEARCH 55.12(2019):10494-10517. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论