Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR024826 |
Reactive Transport of Nutrients and Bioclogging During Dynamic Disconnection Process of Stream and Groundwater | |
Xian, Yang1,2,3; Jin, Menggui1,2; Zhan, Hongbin2,3; Liu, Yanfeng2 | |
2019-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:5页码:3882-3903 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Biofilm-induced dynamic evolution of streambed permeability commonly concurs with the transition from connection to disconnection between surface water and groundwater in arid regions. However, in most previous studies, static streambeds were assumed to examine the evolution of disconnection, or despite dynamic streambeds being considered, the feedbacks between nutrients transport and microbial growth were ignored. In this study, we developed an innovative coupled variably saturated flow, microbial growth, biogeochemical reactions, and bioclogging model. We applied this model to investigate the feedbacks between nutrients transport and microbial growth and their controls on infiltration evolution. Our results showed that a new clogging layer can naturally develop due to these feedbacks and does not require prior clogging. The development of the new clogging layer promotes the occurrence of disconnection. These results illustrate that as bioclogging is a dominant process, previous static disconnection conditions cannot be used as criteria to predict whether disconnection can occur in a stream-aquifer system. Furthermore, different from the previous assumption of constant specific microbial growth rates, biomass growth, and streambed permeability evolution are self-limiting. Accordingly, due to initial low growth rate, infiltration increases when the water table declines, and it then decreases and reaches a minimum while a stable biofilm is developed. These trends coincide with the infiltration variations reported in previous field investigations. After reaching the minimum, infiltration increases again with decline of the water table until achieving a constant at the moment of disconnection. This stage was missing in previous studies because constant specific growth rates were assumed. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474848500015 |
WOS关键词 | SATURATED POROUS-MEDIA ; HYDRAULIC CONDUCTIVITY ; ARTIFICIAL RECHARGE ; MICROBIAL-GROWTH ; HYPORHEIC ZONE ; AQUIFER INTERACTION ; BACTERIAL BIOFILMS ; INFILTRATION-RATE ; REDOX CONDITIONS ; WATER-QUALITY |
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/183123 |
专题 | 资源环境科学 |
作者单位 | 1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan, Hubei, Peoples R China; 2.China Univ Geosci, Sch Environm Studies, Wuhan, Hubei, Peoples R China; 3.Texas A&M Univ, Dept Geol & Geophys, College Stn, TX 77843 USA |
推荐引用方式 GB/T 7714 | Xian, Yang,Jin, Menggui,Zhan, Hongbin,et al. Reactive Transport of Nutrients and Bioclogging During Dynamic Disconnection Process of Stream and Groundwater[J]. WATER RESOURCES RESEARCH,2019,55(5):3882-3903. |
APA | Xian, Yang,Jin, Menggui,Zhan, Hongbin,&Liu, Yanfeng.(2019).Reactive Transport of Nutrients and Bioclogging During Dynamic Disconnection Process of Stream and Groundwater.WATER RESOURCES RESEARCH,55(5),3882-3903. |
MLA | Xian, Yang,et al."Reactive Transport of Nutrients and Bioclogging During Dynamic Disconnection Process of Stream and Groundwater".WATER RESOURCES RESEARCH 55.5(2019):3882-3903. |
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