气候变化领域集成服务门户(CCPortal): Permafrost degradation enhances the risk of mercury release on Qinghai-Tibetan Plateau

CCPortal

DOI	10.1016/j.scitotenv.2019.135127
	Permafrost degradation enhances the risk of mercury release on Qinghai-Tibetan Plateau
	Mu, Cuicui; Schuster, Paul F.; Abbott, Benjamin W.; Kang, Shichang; Guo, Junming; Sun, Shiwei; Wu, Qingbai; Zhang, Tingjun
发表日期	2020
ISSN	0048-9697
EISSN	1879-1026
卷号	708
英文摘要	Permafrost on the Qinghai-Tibetan Plateau (QTP) has been degrading in the past decades. While the degradation may mobilize previously protected material from the permafrost profile, little is known about the stocks and stability of mercury (Hg) in the QTP permafrost. Here we measured total soil Hg in 265 samples from 15 permafrost cores ranging from 3 to 18 m depth, and 45 active layer (AL) soil samples from different land cover types on the QTP. Approximately 21.7 Gg of Hg was stored in surficial permafrost (0-3 m), with 16.58 Gg of Hg was stored in the active layer. Results from six permafrost collapse areas showed that much of the thawed Hg is mobile, with decreases in total Hg mass of 17.6-30.9% for the AL (top 30 cm) in comparison with non-thermokarst surfaces. We conclude that the QTP permafrost region has a large mercury pool, and the stored mercury is sensitive to permafrost degradation. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Mercury; Permafrost; Thermokarst; Climate warming; Soil organic carbon; Qinghai Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS关键词	GASEOUS ELEMENTAL MERCURY ; ACTIVE-LAYER ; TEMPERATURE SENSITIVITY ; ALPINE ECOSYSTEMS ; RESPIRATION RATES ; ORGANIC-CARBON ; CLIMATE-CHANGE ; SOIL ; METHYLMERCURY ; DEPOSITION
WOS记录号	WOS:000506214900066
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
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/240313
作者单位	[Mu, Cuicui; Zhang, Tingjun] Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China; [Mu, Cuicui; Kang, Shichang; Guo, Junming; Sun, Shiwei] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China; [Mu, Cuicui; Wu, Qingbai] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Schuster, Paul F.] US Geol Survey, Natl Res Program, Boulder, CO USA; [Abbott, Benjamin W.] Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA; [Kang, Shichang] CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100875, Peoples R China; [Zhang, Tingjun] Univ Corp Polar Res, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Mu, Cuicui,Schuster, Paul F.,Abbott, Benjamin W.,et al. Permafrost degradation enhances the risk of mercury release on Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2020,708.
APA	Mu, Cuicui.,Schuster, Paul F..,Abbott, Benjamin W..,Kang, Shichang.,Guo, Junming.,...&Zhang, Tingjun.(2020).Permafrost degradation enhances the risk of mercury release on Qinghai-Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,708.
MLA	Mu, Cuicui,et al."Permafrost degradation enhances the risk of mercury release on Qinghai-Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 708(2020).