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DOI	10.4081/jlimnol.2016.1346
	Dissolved organic carbon, CO2, and CH4 concentrations and their stable isotope ratios in thermokarst lakes on the Qinghai-Tibetan Plateau
	Mu, Cuicui; Zhang, Tingjun; Wu, Qingbai; Peng, Xiaoqing; Zhang, Peng; Yang, Yuzhong; Hou, Yandong; Zhang, Xiankai; Cheng, Guodong
发表日期	2016
ISSN	1129-5767
EISSN	1723-8633
起始页码	313
结束页码	319
卷号	75 期号:2
英文摘要	Thermokarst lakes are widely distributed on the Qinghai-Tibetan Plateau (QTP), which accounts for 8% of the global permafrost area. These lakes probably promote organic matter biodegradation and thus accelerate the emission of carbon-based greenhouse gases. However, little is known about greenhouse gas concentrations and their stable isotopes characteristics of these lakes. In this study, we measured the concentrations of dissolved organic carbon (DOC), dissolved CO2 and CH4, as well as the distribution of delta C-13(CO2), delta C-13(CH4), and delta C-13(OM) (organic matter) of lake sediments in thermokarst lakes on the QTP. Results showed that the OM of the lake sediments was highly decomposed. The concentrations of DOC, CO2 and CH4 in the lake water on the QTP were 1.2-49.6 mg L-1, 3.6-45.0 mu mol L-1 and 0.28-3.0 mu mol L-1, respectively. The highest CO2 and CH4 concentrations were recorded in July while the lowest values in September, which suggested that temperature had an effect on greenhouse gas production, although this pattern may also relate to thermal stratification of the water column. The results implied that thermokast lakes should be paid more attention to regarding carbon cycle and greenhouse gas emissions on the QTP.
英文关键词	Qinghai-Tibetan Plateau; thermokarst lakes; greenhouse gas; dissolved organic carbon; stable carbon isotope
语种	英语
WOS研究方向	Marine & Freshwater Biology
WOS类目	Limnology
WOS关键词	PERMAFROST ZONES ; NORTHERN SIBERIA ; BEILUHE BASIN ; THAW LAKES ; METHANE ; PATHWAYS ; EMISSIONS ; MATTER ; VARIABILITY ; PEATLANDS
WOS记录号	WOS:000383780200013
来源期刊	JOURNAL OF LIMNOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240246
作者单位	[Mu, Cuicui; Wu, Qingbai; Zhang, Peng; Yang, Yuzhong; Hou, Yandong; Cheng, Guodong] Chinese Acad Sci, State Key Lab Frozen Soil Engn, CAREERI, Lanzhou 730000, Gansu, Peoples R China; [Mu, Cuicui; Zhang, Tingjun; Peng, Xiaoqing; Zhang, Xiankai] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst MOE, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Mu, Cuicui,Zhang, Tingjun,Wu, Qingbai,et al. Dissolved organic carbon, CO2, and CH4 concentrations and their stable isotope ratios in thermokarst lakes on the Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2016,75(2).
APA	Mu, Cuicui.,Zhang, Tingjun.,Wu, Qingbai.,Peng, Xiaoqing.,Zhang, Peng.,...&Cheng, Guodong.(2016).Dissolved organic carbon, CO2, and CH4 concentrations and their stable isotope ratios in thermokarst lakes on the Qinghai-Tibetan Plateau.JOURNAL OF LIMNOLOGY,75(2).
MLA	Mu, Cuicui,et al."Dissolved organic carbon, CO2, and CH4 concentrations and their stable isotope ratios in thermokarst lakes on the Qinghai-Tibetan Plateau".JOURNAL OF LIMNOLOGY 75.2(2016).