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  2. 地质与地球物理研究所
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  4. 中国科学院新生代地质与环境重点实验室
Driving forces of nitrogen cycling and the climate feedback loops in the Yarlung Tsangpo River Basin, the highest-altitude large river basin in the world

文献类型：期刊论文

作者Liu, Wenjing1,2,3; Jiang, Hao2,3,4; Zhang, Jiangyi1,2,3; Xu, Zhifang1,2,3
刊名JOURNAL OF HYDROLOGY
出版日期2022-07-01
卷号610页码:9
ISSN号0022-1694
关键词Nitrogen cycle Nitrification Climate change Isotope Tibetan Plateau
DOI10.1016/j.jhydrol.2022.127974
英文摘要Under the impacts of climate change and the expansion of anthropogenic activities, changes in global nitrogen cycle may be most dramatic at high altitudes. However, a large basin scale understanding of nitrogen cycling is still lacking for the Tibetan Plateau. Taking advantage of the multiple-isotopic approach, we explored the nitrogen cycling processes, the driving forces, and the impacts on climate in the Yarlung Tsangpo River Basin, the highest river basin in the world. We showed that in-soil nitrification dominated the basin-scale nitrogen cycle and that nitrate (NO3-) removal was insignificant. For the first time, the NO3- source contributions were estimated by an isotope-mixing model. In the high-flow season, animal manure (AM) and soil organic nitrogen and chemical fertilizer (SON & CF) contributed significant amounts of NO3- (34-36% and 30-36%, respectively), followed by domestic sewage (DS; 20-27%). In the low-flow season, the contributions from SON & CF decreased (at 27-34%) while those from DS increased (at 21-37%). The annual NO3- flux of the Yarlung Tsangpo River was 27.4 x 103 t.yr(-1), of which 32.0%, 32.6%, 26.3%, and 9.1% were from SON & CF, AM, DS, and atmospheric precipitation (AP), respectively. The significant spatiotemporal variations in the nitrate sources were regulated by both anthropogenic activities (e.g., sewage and grazing) and climate (e.g., temperature and precipitation). Based on the findings, a nitrification-driven feedback loop on climate was proposed, in which both positive and negative feedback mechanisms were hypothesized. This study adds important basin-scale understanding of the nitrogen cycling patterns and environmental effect implications on the Tibetan Plateau and other sensitive area in the context of global change.
WOS关键词TIBETAN PLATEAU ; ISOTOPE FRACTIONATION ; NITRATE SOURCES ; NITRIFICATION ; SOIL ; TRANSFORMATIONS ; IDENTIFICATION ; MECHANISMS ; TURNOVER ; DYNAMICS
资助项目National Natural Science Foundation of China[91747202] ; National Natural Science Foundation of China[42003005] ; National Key Research and Develop-ment Program of China[2020YFA0607700] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Youth Innovation Promotion Association CAS[2019067]
WOS研究方向Engineering ; Geology ; Water Resources
语种英语
出版者ELSEVIER
WOS记录号WOS:000811888100007
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; National Key Research and Develop-ment Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/105891]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Xu, Zhifang
作者单位1.CAS Ctr Excellence Life & Paleoenvironment, Beijing 100044, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Wenjing,Jiang, Hao,Zhang, Jiangyi,et al. Driving forces of nitrogen cycling and the climate feedback loops in the Yarlung Tsangpo River Basin, the highest-altitude large river basin in the world[J]. JOURNAL OF HYDROLOGY,2022,610:9.
APA Liu, Wenjing,Jiang, Hao,Zhang, Jiangyi,&Xu, Zhifang.(2022).Driving forces of nitrogen cycling and the climate feedback loops in the Yarlung Tsangpo River Basin, the highest-altitude large river basin in the world.JOURNAL OF HYDROLOGY,610,9.
MLA Liu, Wenjing,et al."Driving forces of nitrogen cycling and the climate feedback loops in the Yarlung Tsangpo River Basin, the highest-altitude large river basin in the world".JOURNAL OF HYDROLOGY 610(2022):9.

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来源：地质与地球物理研究所

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