IOCAS-IR  > 海洋生态与环境科学重点实验室
Carbon sinks_sources in the Yellow and East China SeasAir-sea interface exchange, dissolution in seawater, and burial in sediments
Song, Jinming1,2,3,4; Qu, Baoxiao1,2,3,4; Li, Xuegang1,2,3,4; Yuan, Huamao1,2,3,4; Li, Ning1,2,3,4; Duan, Liqin1,2,3,4
2018-11-01
Source PublicationSCIENCE CHINA-EARTH SCIENCES
ISSN1674-7313
Volume61Issue:11Pages:1583-1593
AbstractThe sinks/sources of carbon in the Yellow Sea (YS) and East China Sea (ECS), which are important continental shelf seas in China, could exert a great influence on coastal ecosystem dynamics and the regional climate change process. The CO2 exchange process across the seawater-air interface, dissolved and particulate carbon in seawater, and carbon burial in sediments were studied to understand the sinks/sources of carbon in the continental shelf seas of China. The YS and the ECS generally have different patterns of seasonal air-sea CO2 exchange. In the YS, regions west of 124 degrees E can absorb CO2 from the atmosphere during spring and winter, and release CO2 to the atmosphere during summer and autumn. The entire YS is considered as a CO2 source throughout the year with respect to the atmosphere, but there are still uncertainties regarding the exact air-sea CO2 exchange flux. Surface temperature and phytoplankton production were the key controlling factors of the air-sea CO2 exchange flux in the offshore region and nearshore region of the YS, respectively. The ECS can absorb CO2 during spring, summer, and winter and release CO2 to the atmosphere during autumn. The annual average exchange rate in the ECS was -4.2 +/- 3.2 mmol m(-2) d(-1) and it served as an obvious sink for atmospheric CO2 with an air-sea exchange flux of 13.7x10(6) t. The controlling factors of the air-sea CO2 exchange in the ECS varied significantly seasonally. Storage of dissolved inorganic carbon (DIC) and dissolved organic carbon (DOC) in the YS and the ECS were 425x10(6) t and 1364x10(6) t, and 28.2x10(6) t and 54.1x10(6) t, respectively. Long-term observation showed that the DOC content in the YS had a decreasing trend, indicating that the practical carbon sink in the YS was decreasing. The total amount of particulate organic carbon (POC) stored in the YS and ECS was 10.6x10(6) t, which was comparable to the air-sea CO2 flux in these two continental shelf seas. The amounts of carbon sequestered by phytoplankton in the YS and the ECS were 60.42x10(6) t and 153.41x10(6) t, respectively. Artificial breeding of macroalgae could effectively enhance blue carbon sequestration, which could fix 0.36x10(6)-0.45x10(6) t of carbon annually. Organic carbon (OC) buried in the sediments of the YS was estimated to be 4.75x10(6) t, and OC of marine origin was 3.03x10(6) t, accounting for 5.0% of the TOC fixed by phytoplankton primary production. In the ECS, the corresponding depositional flux of OC in the sediment was estimated to be 7.4x10(6) t yr(-1), and the marine-origin OC was 5.5x10(6) t, accounting for 5.4% of the phytoplankton primary production. Due to the relatively high average depositional flux of OC in the sediment, the YS and ECS have considerable potential to store a vast amount of blue carbon.
KeywordSink source of carbon Air-sea CO2 exchange Dissolved inorganic carbon Dissolved organic carbon Particulate organic carbon Sediment Yellow Sea East China Sea
Subject AreaGeology
DOI10.1007/s11430-017-9213-6
Indexed BySCIE
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA11020102] ; National Natural Science Foundation of China[U1606404] ; National Natural Science Foundation of Shandong Province[U1606404] ; Program for Aoshan Excellent Scholars of Qingdao National Laboratory for Marine Science and Technology[013ASTP-OS13]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000449781200003
PublisherSCIENCE PRESS
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/156406
Collection海洋生态与环境科学重点实验室
Corresponding AuthorSong, Jinming; Qu, Baoxiao
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Song, Jinming,Qu, Baoxiao,Li, Xuegang,et al. Carbon sinks_sources in the Yellow and East China SeasAir-sea interface exchange, dissolution in seawater, and burial in sediments[J]. SCIENCE CHINA-EARTH SCIENCES,2018,61(11):1583-1593.
APA Song, Jinming,Qu, Baoxiao,Li, Xuegang,Yuan, Huamao,Li, Ning,&Duan, Liqin.(2018).Carbon sinks_sources in the Yellow and East China SeasAir-sea interface exchange, dissolution in seawater, and burial in sediments.SCIENCE CHINA-EARTH SCIENCES,61(11),1583-1593.
MLA Song, Jinming,et al."Carbon sinks_sources in the Yellow and East China SeasAir-sea interface exchange, dissolution in seawater, and burial in sediments".SCIENCE CHINA-EARTH SCIENCES 61.11(2018):1583-1593.
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