Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075951 |
Dual Isotope Measurements Reveal Zoning of Nitrate Processing in the Summer Changjiang (Yangtze) River Plume | |
Yan, Xiuli1; Xu, Min Nina1; Wan, Xianhui Sean1; Yang, Jin-Yu Terence1; Trull, Thomas W.2,3; Dai, Minhan1; Kao, Shuh-Ji1 | |
2017-12-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:24 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Australia |
英文摘要 | Riverine nitrogen input into the coastal zone has increased remarkably in recent decades. Yet its transformation and recycling within hydrodynamically active regions remains unclear. Using observations of nitrate concentration and dual isotopic composition across the Changjiang River plume within a three end-member mixing model, we found deviations between the observed and expected values for mixing alone, revealing the nonconservative behavior of nitrate. Using cross correlations between concentrations and dual isotope deviations, we identified three nitrogen transformation zones, which correspond to separate portions of the plume. Nitrification and sedimentary denitrification occurred near the river mouth, nitrification prevailed further offshore under the plume, and finally, phytoplankton assimilation occurred in the outer surface plume (>100 km offshore), where it was fueled by nitrate that had already been strongly modified by microbial processes. Information was assembled into a conceptual model offering an overview of nitrogen transformations in a large river plume. |
英文关键词 | Changjiang River plume dual isotope nitrate isotope effect |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000422954700003 |
WOS关键词 | EAST CHINA SEA ; HARMFUL ALGAL BLOOMS ; CONTINENTAL-SHELF ; FRESH-WATER ; MARINE-PHYTOPLANKTON ; NITROGEN ; OXYGEN ; ESTUARY ; FRACTIONATION ; DENITRIFICATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/28312 |
专题 | 气候变化 |
作者单位 | 1.Xiamen Univ, Coll Ocean & Earth Sci, State Key Lab Marine Environm Sci, Xiamen, Peoples R China; 2.Univ Tasmania, Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas, Australia; 3.CSIRO, Oceans & Atmosphere, Hobart, Tas, Australia |
推荐引用方式 GB/T 7714 | Yan, Xiuli,Xu, Min Nina,Wan, Xianhui Sean,et al. Dual Isotope Measurements Reveal Zoning of Nitrate Processing in the Summer Changjiang (Yangtze) River Plume[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(24). |
APA | Yan, Xiuli.,Xu, Min Nina.,Wan, Xianhui Sean.,Yang, Jin-Yu Terence.,Trull, Thomas W..,...&Kao, Shuh-Ji.(2017).Dual Isotope Measurements Reveal Zoning of Nitrate Processing in the Summer Changjiang (Yangtze) River Plume.GEOPHYSICAL RESEARCH LETTERS,44(24). |
MLA | Yan, Xiuli,et al."Dual Isotope Measurements Reveal Zoning of Nitrate Processing in the Summer Changjiang (Yangtze) River Plume".GEOPHYSICAL RESEARCH LETTERS 44.24(2017). |
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