气候变化领域集成服务门户(CCPortal): The status and stability of permafrost carbon on the Tibetan Plateau

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DOI	10.1016/j.earcirev.2020.103433
	The status and stability of permafrost carbon on the Tibetan Plateau
	Mu, Cuicui; Abbott, Benjamin W.; Norris, Adam J.; Mu, Mei; Fan, Chenyan; Chen, Xu; Jia, Lin; Yang, Ruimin; Zhang, Tingjun; Wang, Kang; Peng, Xiaoqing; Wu, Qingbai; Guggenberger, Georg; Wu, Xiaodong
发表日期	2020
ISSN	0012-8252
EISSN	1872-6828
卷号	211
英文摘要	Permafrost regions at high latitudes and altitudes store about half of the Earth's soil organic carbon (SOC). These areas are also some of the most intensely affected by anthropogenic climate change. The Tibetan Plateau or Third Pole (TP) contains most of the world's alpine permafrost, yet there remains substantial uncertainty about the role of this region in regulating the overall permafrost climate feedback. Here, we review the thermal and biogeochemical status of permafrost on the TP, with a particular focus on SOC stocks and vulnerability in the face of climate warming. SOC storage in permafrost-affected regions of the TP is estimated to be 19.0 +/- 6.6 Pg to a depth of 2 m. The distribution of this SOC on the TP is strongly associated with active layer thickness, soil moisture, soil texture, topographic position, and thickness of weathered parent material. The mean temperature sensitivity coefficient (Q(10)) of SOC decomposition is 9.2 +/- 7.1 across different soil depths and under different land-cover types, suggesting that carbon on the TP is very vulnerable to climate change. While the TP ecosystem currently is a net carbon sink, climate change will likely increase ecosystem respiration and may weaken or reverse the sink function of this region in the future. Although the TP has less ground ice than high latitude permafrost regions, the rugged topography makes it vulnerable to widespread permafrost collapse and thermoerosion (thermokarst), which accelerates carbon losses. To reduce uncertainty about SOC quantities and sensitivity to warming, future studies are needed that explain variation in Q(10) (e.g. based on SOC source or depositional position) and quantify the role of nutrient availability in regulating SOC dynamics and ecosystem recovery following disturbance. Additionally, as for the high latitude permafrost region, soil moisture and thermokarst formation remain major challenges to predicting the permafrost climate feedback on the TP. We present a conceptual model for of greenhouse gas release from the TP and outline the empirical observations and modeling approaches needed to test it.
英文关键词	Soil organic carbon; greenhouse gas; temperature sensitivity; thaw slumps, thermokarst lakes; permafrost; Tibetan Plateau
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS关键词	SOIL ORGANIC-CARBON ; ACTIVE-LAYER THICKNESS ; THERMOKARST LAKES ; METHANE EMISSIONS ; ALPINE GRASSLAND ; CLIMATE-CHANGE ; THAW SLUMP ; TEMPERATURE SENSITIVITY ; TERRESTRIAL ECOSYSTEMS ; ENVIRONMENTAL CONTROLS
WOS记录号	WOS:000600288800003
来源期刊	EARTH-SCIENCE REVIEWS
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/240320
作者单位	[Mu, Cuicui; Mu, Mei; Fan, Chenyan; Chen, Xu; Jia, Lin; Yang, Ruimin; Zhang, Tingjun; Peng, Xiaoqing] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China; [Mu, Cuicui; Wu, Xiaodong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibetan Plateau, Lanzhou 730000, Peoples R China; [Mu, Cuicui; Wu, Qingbai] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Abbott, Benjamin W.; Norris, Adam J.] Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA; [Mu, Cuicui] Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519000, Peoples R China; [Wang, Kang] East China Normal Univ, Sch Geog Sci, Shanghai 200241, Peoples R China; [Mu, Cuicui; Peng, Xiaoqing] Univ Cooperat Polar Res, Beijing 100875, Peoples R China; [Guggenberger, Georg] Leibniz Univ Hannover, Inst Soil Sci, Herrenhauser Str 2, D-30419 H...
推荐引用方式 GB/T 7714	Mu, Cuicui,Abbott, Benjamin W.,Norris, Adam J.,et al. The status and stability of permafrost carbon on the Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2020,211.
APA	Mu, Cuicui.,Abbott, Benjamin W..,Norris, Adam J..,Mu, Mei.,Fan, Chenyan.,...&Wu, Xiaodong.(2020).The status and stability of permafrost carbon on the Tibetan Plateau.EARTH-SCIENCE REVIEWS,211.
MLA	Mu, Cuicui,et al."The status and stability of permafrost carbon on the Tibetan Plateau".EARTH-SCIENCE REVIEWS 211(2020).