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  4. 中国科学院新生代地质与环境重点实验室
Coupling geochemical and microbial molecular techniques to reveal catchment-scale nitrate yield and fluvial export dynamics

文献类型：期刊论文

作者Jiang, Hao2,6; Li, Shen1,6; Zhang, Wenshi6; Guo, Wenjing6; Tan, Xiang2,6; Wang, Weibo2,6; Wang, Dezhi2,6; Ye, Chen2,6; Gong, Yu2,6; Liu, Wenjing5
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2023-08-25
卷号888页码:10
关键词Nitrate Catchment Protocol Isotope 15N pairing Molecular technique
ISSN号0048-9697
DOI10.1016/j.scitotenv.2023.163993
英文摘要The disturbance of reactive nitrogen (N) on ecosystems and biogeochemical cycles is now one of the most severe en-vironmental problems worldwide. Nitrate (NO3-) is usually a dominant reactive N species in river ecosystems. Exces-sive NO3- concentrations in rivers have led to eutrophication and consequent ecological and environmental damages. Quantifying catchment-scale NO3- yield and export dynamics is crucial for effective remediation of river NO3- pollu-tion. Frequently, natural abundance isotopes of NO3- in a river (& delta;15N/& delta;18O-NO3-) are applied to identify sources and potential transformations of NO3- at a catchment scale, while microbial molecular techniques and 15N pairing ex-periments are employed to reveal the NO3- production and removal processes and their underlying mechanisms in mi-croenvironments (e.g., sediments and soils). In this study, we developed a novel protocol that couples these complementary geochemical and molecular techniques to quantify catchment-scale NO3- yield and fluvial export dy-namics. The protocol links microscopic processes with catchment-scale geochemical characteristics to explicitly de-scribe the NO3- cycling processes and their underlying abiotic and biotic mechanisms within a catchment. We applied the protocol to the Dadu and Jiazela catchments on the Qinghai-Tibet Plateau, and demonstrated the effective-ness of the protocol in determining NO3- yield and export dynamics in the catchments.
WOS关键词KINETIC ISOTOPE FRACTIONATION ; NITROGEN-CYCLE ; DENITRIFICATION ; NITRIFICATION ; NITRITE ; SEDIMENTS ; AMMONIUM ; WORLD ; RIVER
资助项目National Natural Science Foundation of China[42003005] ; National Natural Science Foundation of China[32030069]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001022297600001
出版者ELSEVIER
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 Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/111264]  
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Zhang, Quanfa
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci & Hubei Prov, Danjiangkou Wetland Ecosyst Field Sci Observat & R, Wuhan 430074, Peoples R China
3.Wuhan Inst Technol, Res Ctr Environm Ecol & Engn, Sch Environm Ecol & Biol Engn, Wuhan 430205, Peoples R China
4.Shenzhen Univ, Inst Adv Study, Shenzhen Key Lab Marine Microbiome Engn, Shenzhen 518060, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
6.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		 Jiang, Hao,Li, Shen,Zhang, Wenshi,et al. Coupling geochemical and microbial molecular techniques to reveal catchment-scale nitrate yield and fluvial export dynamics[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,888:10.
APA Jiang, Hao.,Li, Shen.,Zhang, Wenshi.,Guo, Wenjing.,Tan, Xiang.,...&Zhang, Quanfa.(2023).Coupling geochemical and microbial molecular techniques to reveal catchment-scale nitrate yield and fluvial export dynamics.SCIENCE OF THE TOTAL ENVIRONMENT,888,10.
MLA Jiang, Hao,et al."Coupling geochemical and microbial molecular techniques to reveal catchment-scale nitrate yield and fluvial export dynamics".SCIENCE OF THE TOTAL ENVIRONMENT 888(2023):10.

入库方式： OAI收割

来源：地质与地球物理研究所

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