干旱区生态环境知识资源中心(Arid): Migration and release potential of nitrogen at the sediment-water interface in lakes in cold and arid regions

Arid

DOI	10.1016/j.ijsrc.2024.04.009
	Migration and release potential of nitrogen at the sediment-water interface in lakes in cold and arid regions
	Li, Mengze; Wang, Shuhang; Li, Wei; Wang, Wenwen; Fei, Qi; Gao, Jing
通讯作者	Wang, WW
来源期刊	INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
ISSN	1001-6279
EISSN	2589-7284
出版年	2024
卷号	39 期号:4 页码:576-585
英文摘要	Lake eutrophication in cold and arid regions is showing a deepening trend in recent years, posing a serious threat to the regional ecological environment. The occurrence characteristics, bioavailability, sorption-desorption characteristics, and release risk of sediment nitrogen in the Ulanor Wetland, located in the Hulun Lake basin of China, were investigated by combining field investigation, laboratory simulation experiments, and multiple technologies, including diffusive gradients in thin films and highresolution dialysis technology. The total nitrogen (TN) in the water overlying the sediment bed (i.e., overlying water) ranged from 1.44 to 2.65 mg/L. Dissolved inorganic nitrogen was the main form of TN in overlying water, and ammonia nitrogen (NH4 & thorn;-N) in the pore water at the sediment-water interface was higher than that in the overlying water. Surface sediment TN content ranged from 695.37 to 2,344.77 mg/ kg, with acid-dissolved nitrogen as the main component, and can cause the lowest level of ecotoxic effect. The maximum and equilibrium adsorption amounts of sediment NH4 & thorn;-N ranged from 0.269 to 1.017 mg/g and 0.0132-0.0382 mg/g, respectively. The bioavailability and transport capacity of sediment nitrogen were relatively weak, but a release risk was still observed. (c) 2024 International Research and Training Centre on Erosion and Sedimentation. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
英文关键词	Cold and arid region Ulanor wetland Sediment-water interface Nitrogen migration and transformation Release risk
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001291962800001
WOS关键词	DIFFUSIVE GRADIENTS ; HULUN LAKE ; ADSORPTION ; PHOSPHORUS ; EXCHANGE
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404265
推荐引用方式 GB/T 7714	Li, Mengze,Wang, Shuhang,Li, Wei,et al. Migration and release potential of nitrogen at the sediment-water interface in lakes in cold and arid regions[J],2024,39(4):576-585.
APA	Li, Mengze,Wang, Shuhang,Li, Wei,Wang, Wenwen,Fei, Qi,&Gao, Jing.(2024).Migration and release potential of nitrogen at the sediment-water interface in lakes in cold and arid regions.INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,39(4),576-585.
MLA	Li, Mengze,et al."Migration and release potential of nitrogen at the sediment-water interface in lakes in cold and arid regions".INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH 39.4(2024):576-585.