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Water and sediment regulation eluting and washland planting lead to nitrogen increase in the lower reaches of the Yellow River

文献类型：期刊论文

作者Hu, Nana1,3,4; Sheng, Yanqing1,3; Li, Zhaoran3; Wang, Zheng3,4; Xu, Weihan3; Yang, Huiyi2
刊名AGRICULTURE ECOSYSTEMS & ENVIRONMENT
出版日期2025-02-28
卷号379页码:13
关键词Nitrogen cycle Yellow River Washland planting Water and sediment regulation event
ISSN号0167-8809
DOI10.1016/j.agee.2024.109380
通讯作者Sheng, Yanqing(yqsheng@yic.ac.cn)
英文摘要The Yellow River is an important agricultural production base in China, plays a key role in terrestrial sea transport and nitrogen transformation. However, the reason for the transient nitrogen increase in the lower Yellow River remains unclear. This study explored the contributions to transient nitrogen elevation from the water column, suspended particulate matter, surface sediments in the lower Yellow River, and washland soils along it throughout the water and sediment regulation event in 2023. Results indicated that the average dissolved nitrate concentrations in the lower Yellow River were 1.38 and 1.12 times higher before and during water and sediment regulation than after, because of excess reactive nitrogen elution from the beach by the water and sediment regulation. The nitrogen release risk was low in suspended particulate matter and surface sediments (ion exchangeable form nitrogen content was 0.007-0.033 mg center dot g- 1) but high in soil (average ion exchangeable form nitrogen content was 0.092 mg center dot g- 1). Leaching results indicated that nitrate concentration in the water was not significantly influenced by the reduction in suspended particulate matter or surface sediments. In contrast, in soil S-13 (ion exchangeable form nitrogen content was 0.371 mg center dot g- 1), the estimated leaching rate of nitrate averaged 14.74 %, and ion exchangeable form nitrogen accounted for 19.25 % of total nitrogen, with 76.56 % of ion exchangeable form nitrogen leached. Therefore, the water and sediment regulation elution and the continuous leaching of nitrogen from washland soils around the lower Yellow River notably increased the nitrogen concentration in the lower Yellow River.
WOS关键词RELEASE CHARACTERISTICS ; SUSPENDED-SEDIMENT ; PHOSPHORUS ; TRANSPORT ; LAKE ; NITRIFICATION ; IMPACTS ; YANGTZE ; FLUXES ; CHINA
WOS研究方向Agriculture ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001358889100001
资助机构Key Project of Shandong Provincial Natural Science Foundation ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.yic.ac.cn/handle/133337/38198]  
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
烟台海岸带研究所_山东省海岸带环境工程技术研究中心
通讯作者Sheng, Yanqing
作者单位1.Shandong Acad Environm Planning, Lab Land & Sea Ecol Governance & Systemat Regulat, Jinan 250101, Peoples R China
2.Univ Greenwich, Nat Resources Inst, London ME4 4TP, England
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Nana,Sheng, Yanqing,Li, Zhaoran,et al. Water and sediment regulation eluting and washland planting lead to nitrogen increase in the lower reaches of the Yellow River[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2025,379:13.
APA Hu, Nana,Sheng, Yanqing,Li, Zhaoran,Wang, Zheng,Xu, Weihan,&Yang, Huiyi.(2025).Water and sediment regulation eluting and washland planting lead to nitrogen increase in the lower reaches of the Yellow River.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,379,13.
MLA Hu, Nana,et al."Water and sediment regulation eluting and washland planting lead to nitrogen increase in the lower reaches of the Yellow River".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 379(2025):13.

入库方式： OAI收割

来源：烟台海岸带研究所

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