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Large-river dominated black carbon flux and budget: A case study of the estuarine-inner shelf of East China Sea, China
Yin Fang;  Yingjun Chen;  ming Luo;  Jun Li;  Gan Zhang;  Limin Hu;  Chongguo Tian;  YongMei Zheng;  Tian Lin
2019
发表期刊Science of the Total Environment
卷号651页码:2489–2496
摘要

Mobilization of terrestrial-derived and recalcitrant black carbon (BC), including char and soot, from land to ocean exerts a significant influence on the global carbon cycle. This study elaborated the occurrence and spatial distributions of BC, char, and soot concentrations, as well as their burial fluxes, in the estuarine-inner shelf surface sediments of the East China Sea (ECS), an epicontinental sea adjacent to Chinese high-intensity BC emission source regions. Using a combination of BC measurements in the Yangtze River water and coastal ECS aerosol samples, a preliminary BC budget was concurrently constrained. The spatial distribution of char concentrations resembled largely that of BC, but differed significantly fromthat of soot, indicating that char and soot exhibited different geo-chemical behaviors. In contrast to concentrations, BC, char, and soot burial fluxes exhibited highly consistent spatial patterns, and all declined as the distance from the coastline increased. For the coastal ECS, riverine discharge dominated (similar to 92%) the total BC input, with the Yangtze River alone accounting for as high as similar to 72%. The area-integrated sedimentary BC sink flux (630 +/- 728 Gg/yr) in the coastal ECS was equivalent to the total BC influx (670 +/- 153 Gg/yr), which coincided well with the regional sediment budget. This suggested that the terrestrial-derived and recalcitrant BC could be regarded as an alternative geochemical proxy for tracing the sediment source-to-sink processes in this region. Comparisons between BC and co-generated polycyclic aromatic hydrocarbons (PAHs) budgets in the coastal ECS revealed similarities in their input pathways, but dramatic differences in their ultimate fates. Despite these, the ECS estuarine-inner shelf could serve as a major sink of these terrestrial-based materials in the global ocean.

关键词Carbon Cycle black Carbon riverine Discharge yangtze River east China Sea
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8919
专题环境地球化学国家重点实验室
作者单位1.Key Laboratory of Cities' Mitigation and Adaptation to Climate Change in Shanghai, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
2.Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
3.Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
4.Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
5.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
6.SKL-ESPC and BIC-EAST, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
7.State Key Laboratory of Environmental Geochemistry, Guiyang Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
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GB/T 7714
Yin Fang;Yingjun Chen;ming Luo;Jun Li;Gan Zhang;Limin Hu;Chongguo Tian;YongMei Zheng;Tian Lin. Large-river dominated black carbon flux and budget: A case study of the estuarine-inner shelf of East China Sea, China[J]. Science of the Total Environment,2019,651:2489–2496.
APA Yin Fang;Yingjun Chen;ming Luo;Jun Li;Gan Zhang;Limin Hu;Chongguo Tian;YongMei Zheng;Tian Lin.(2019).Large-river dominated black carbon flux and budget: A case study of the estuarine-inner shelf of East China Sea, China.Science of the Total Environment,651,2489–2496.
MLA Yin Fang;Yingjun Chen;ming Luo;Jun Li;Gan Zhang;Limin Hu;Chongguo Tian;YongMei Zheng;Tian Lin."Large-river dominated black carbon flux and budget: A case study of the estuarine-inner shelf of East China Sea, China".Science of the Total Environment 651(2019):2489–2496.
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