Sources and fate of organic carbon and nitrogen from land to ocean: Identified by coupling stable isotopes with C/N ratio
Li, Y(李远)1; Zhang, HB1; Tu, C1; Fu, CC1; Xue, Y2; Luo, YM1; Luo, YM (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China. Email:ymluo@yic.ac.cn
发表期刊ESTUARINE COASTAL AND SHELF SCIENCE
ISSN0272-7714
2016-11-05
卷号181页码:114-122
关键词Organic Carbon Nitrogen Sediment Source Stable Isotopes Yellow River Coastal Plain Bohai Sea
DOI10.1016/j.ecss.2016.08.024
作者部门中科院海岸带环境过程与生态修复重点实验室
英文摘要

The transport of organic matter in coastal areas plays an important role in global biogeochemical cycles. The present study used stable isotopes including carbon (delta C-13) and nitrogen (delta N-15) and C/N ratio to assess the sources and fate of organic carbon and nitrogen in soils and sediments of a coastal plain-river plume bay system. Changes of the delta C-13 and delta N-15 values from natural to agricultural soils in the Yellow River coastal plain reflected the contribution of C-4 carbon, decomposition of organic matter and application of nitrogen fertilizer. The organic carbon in the marine sediments adjacent to the coastal plain mainly originated from C-3-dominated terrestrial systems. The spatial heterogeneity of both delta C-13 and delta N-15 values indicated that Yellow River sediment transport and anthropogenic wastewater discharge were two driving forces for the sedimentary organic carbon and nitrogen dynamics in large river plume and inner bay areas. Meanwhile, the marine primary production and denitrification process as affected by excessive nutrient input also contributed to the cycling of organic matter. Wetland soils, cropland soils, vegetable soils, coastal and deep-sea sediments were the five systems controlling the cycle of organic carbon and nitrogen in the study area. A significant positive correlation between delta C-13 and delta N-15 in the Yellow River coastal plain-plume-bay region was observed, which implied the flux of organic matter from a labile pool in source regions into a more recalcitrant pool in sink regions. These findings would provide a better understanding of carbon sequestration in the coastal soil and sediment. (C) 2016 Elsevier Ltd. All rights reserved.

文章类型Article
资助机构National Natural Science Foundation of China(41371313 ; WPOS project(XDA11020402) ; 41230858)
收录类别SCI
语种英语
关键词[WOS]Yellow-river Delta ; Bohai Sea ; Surface Sediments ; Southern China ; Estuary ; Matter ; Soil ; Preservation ; Shelf ; Load
研究领域[WOS]Marine & Freshwater Biology ; Oceanography
WOS记录号WOS:000386406500011
引用统计
被引频次:58[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/17469
专题中国科学院海岸带环境过程与生态修复重点实验室
通讯作者Luo, YM; Luo, YM (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China. Email:ymluo@yic.ac.cn
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res
2.Shanghai Univ, Coll Environm & Chem Engn
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GB/T 7714
Li, Y,Zhang, HB,Tu, C,et al. Sources and fate of organic carbon and nitrogen from land to ocean: Identified by coupling stable isotopes with C/N ratio[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2016,181:114-122.
APA Li, Y.,Zhang, HB.,Tu, C.,Fu, CC.,Xue, Y.,...&Luo, YM .(2016).Sources and fate of organic carbon and nitrogen from land to ocean: Identified by coupling stable isotopes with C/N ratio.ESTUARINE COASTAL AND SHELF SCIENCE,181,114-122.
MLA Li, Y,et al."Sources and fate of organic carbon and nitrogen from land to ocean: Identified by coupling stable isotopes with C/N ratio".ESTUARINE COASTAL AND SHELF SCIENCE 181(2016):114-122.
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