Contrasting distribution patterns and mobilization mechanisms of pore water heavy metals in riverine and coastal ecosystems
文献类型：期刊论文
| 作者 | Luo, Manhua1,2,6; Jiao, Jiu Jimmy1,6; Li, Hailong1,2,3; Pan, Feng4; Xiao, Kai5 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2026 |
| 卷号 | 501页码:12 |
| 关键词 | Pore water Heavy metals Coastal and riverine ecosystems Estuarine wetlands Mobilization mechanisms |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2025.140622 |
| 通讯作者 | Jiao, Jiu Jimmy(jjiao@hku.hk) |
| 英文摘要 | Heavy metal (HM) contamination in sediment pore water poses significant ecological risks in aquatic environments, yet the mechanisms controlling HM mobilization in coastal and riverine ecosystems remain poorly understood. Understanding these mechanisms is essential for effective pollution management and ecological risk assessment. In this study, we applied high-resolution dialysis (HR-Peeper) to quantify nine HMs (As, Co, Cr, Cu, Fe, Mn, Ni, Zn, V) in the pore water of five wetland types (tidal marshes, aquaculture ponds, mud flats, mangrove wetlands, and tidal estuaries) within Changsha Bay and the adjacent Huangjiang River, China. Results revealed that the concentrations and pollution levels of HMs were generally higher in coastal than in riverine ecosystems, with mangrove wetlands exhibiting the greatest accumulation potential. Along the river, the HM concentrations decreased from upstream to downstream, while diffusive fluxes exhibited a non-linear pattern. These spatial variations were primarily driven by hydrodynamic conditions and anthropogenic inputs. In coastal ecosystems, the concentration gradients between pore water and overlying water primarily governed HM mobilization, with pore water generally acting as a source, except in aquaculture ponds. These findings provide new insights into the transport pathways and ecological risks of HMs, highlighting key factors for managing heavy metal pollution in coastal and riverine ecosystems. |
| WOS关键词 | DISSOLVED TRACE-METALS ; SPATIAL VARIATION ; SEDIMENTS ; POLLUTION ; MANGROVE ; ESTUARINE ; SALINITY ; SPECIATION ; DIFFUSION ; MOBILITY |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001634495900001 |
| 资助机构 | National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Research Foundation ; Research Grants Council of the Hong Kong Special Administrative Region, China ; Guangdong-Hong Kong Joint Laboratory for Soil and Groundwater Pollution Control ; Guangdong Provincial Key Laboratory for Soil and Groundwater Pollution Control ; High Level of Special Funds ; Hong Kong Scholars Program |
| 源URL | [http://ir.yic.ac.cn/handle/133337/41925]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Jiao, Jiu Jimmy |
| 作者单位 | 1.Guangdong Hong Kong Joint Lab Soil & Groundwater P, Hong Kong, Peoples R China 2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut C, Shenzhen, Peoples R China 3.Southern Univ Sci & Technol, State Key Lab Soil Pollut Control & Safety, Shenzhen, Peoples R China 4.Xiamen Univ, Coll Environm & Ecol, Fujian Key Lab Coastal Pollut Prevent & Control, Key Lab,Minist Educ Coastal & Wetland Ecosyst, Xiamen, Peoples R China 5.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China 6.Univ Hong Kong, Dept Earth & Planetary Sci, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, Manhua,Jiao, Jiu Jimmy,Li, Hailong,et al. Contrasting distribution patterns and mobilization mechanisms of pore water heavy metals in riverine and coastal ecosystems[J]. JOURNAL OF HAZARDOUS MATERIALS,2026,501:12. |
| APA | Luo, Manhua,Jiao, Jiu Jimmy,Li, Hailong,Pan, Feng,&Xiao, Kai.(2026).Contrasting distribution patterns and mobilization mechanisms of pore water heavy metals in riverine and coastal ecosystems.JOURNAL OF HAZARDOUS MATERIALS,501,12. |
| MLA | Luo, Manhua,et al."Contrasting distribution patterns and mobilization mechanisms of pore water heavy metals in riverine and coastal ecosystems".JOURNAL OF HAZARDOUS MATERIALS 501(2026):12. |
入库方式： OAI收割
来源：烟台海岸带研究所
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