干旱区生态环境知识资源中心(Arid): Spatial Patterns of Organic and Inorganic Carbon in Lake Qinghai Surficial Sediments and Carbon Burial Estimation

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DOI	10.3389/feart.2021.714936
	Spatial Patterns of Organic and Inorganic Carbon in Lake Qinghai Surficial Sediments and Carbon Burial Estimation
	Chen, Xi; Meng, Xianqiang; Song, Yinxian; Zhang, Bin; Wan, Zhiwei; Zhou, Bingqing; Zhang, Enlou
通讯作者	Meng, XQ (corresponding author), Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing, Peoples R China. ; Song, YX (corresponding author), Kunming Univ Sci & Technol, Dept Geosci, Fac Land Resource Engn, Kunming, Yunnan, Peoples R China.
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2021
卷号	9
英文摘要	Lake carbon burial is of vital significance in global carbon cycle and carbon budget, particularly in the large deepwater lakes. However, carbon burial in large deepwater lakes is hard to estimate due to the difficulty in obtaining high spatial-resolution samples. In this study, we investigated distributions of total organic carbon (TOC) and inorganic carbon (TIC), two main carbon components in lake sediments, based on dozens of surficial sedimentary samples (n = 26) covering whole Lake Qinghai, the largest saline lake in China. The results showed that the TOC content, with a range of 1.4-4.8%, was significantly higher in the lake area near the northern lakeshore where human activities are concentrated and lower in the lake areas near the Buha River mouth and the eastern lake area. In contrast, the TIC content, ranging from 1.5 to 3.8%, increased from the northwestern and southeastern lake areas toward the lake center, and mainly depended on hydro-chemical and hydraulic characteristics. The inorganic carbon burial (47.77 +/- 19.73 Gg C yr(-1)) was approximately equal to organic carbon burial (47.50 +/- 22.68 Gg C yr(-1)) and accounted for about 50% of the total carbon burial (95.27 +/- 37.74 Gg C yr(-1)), suggesting that saline lakes constitute a large inorganic carbon pool in addition to an organic carbon pool. Because of saline water body type in arid and semiarid regions and alpine Qinghai-Tibet Plateau, lakes in these regions have huge inorganic carbon burial potential and important contributions to the global carbon budget.
英文关键词	Lake Qinghai organic carbon inorganic carbon carbon cycle carbon burial
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000687984900001
WOS关键词	CALCITE TRANSFORMATION ; ISOTOPIC COMPOSITION ; YANGTZE-RIVER ; PLATEAU ; MATTER ; RESERVOIRS ; NITROGEN ; MARINE ; EUTROPHICATION ; GEOCHEMISTRY
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368616
作者单位	[Chen, Xi; Wan, Zhiwei] Jiangxi Normal Univ, Sch Geog & Environm, Minist Educ, Key Lab Poyang Lake Wetland & Watershed Res, Nanchang, Jiangxi, Peoples R China; [Chen, Xi; Meng, Xianqiang; Zhang, Enlou] Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing, Peoples R China; [Song, Yinxian] Kunming Univ Sci & Technol, Dept Geosci, Fac Land Resource Engn, Kunming, Yunnan, Peoples R China; [Zhang, Bin; Zhou, Bingqing] Geol Explorat Technol Inst Jiangsu Prov, Nanjing, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xi,Meng, Xianqiang,Song, Yinxian,et al. Spatial Patterns of Organic and Inorganic Carbon in Lake Qinghai Surficial Sediments and Carbon Burial Estimation[J],2021,9.
APA	Chen, Xi.,Meng, Xianqiang.,Song, Yinxian.,Zhang, Bin.,Wan, Zhiwei.,...&Zhang, Enlou.(2021).Spatial Patterns of Organic and Inorganic Carbon in Lake Qinghai Surficial Sediments and Carbon Burial Estimation.FRONTIERS IN EARTH SCIENCE,9.
MLA	Chen, Xi,et al."Spatial Patterns of Organic and Inorganic Carbon in Lake Qinghai Surficial Sediments and Carbon Burial Estimation".FRONTIERS IN EARTH SCIENCE 9(2021).