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Profound loss of microbial necromass carbon in permafrost thaw-subsidence in the central Tibetan Plateau

文献类型：期刊论文

作者ZHOU Wen-Ting4,5,6; LI Quan-Lian6; KANG Shi-Chang4,6; WU Xiao-Dong5,6; MA Tian3; WU Xiao-Bo6; XIONG Xin2; SHUKLA Tanuj6; RUPAKHETI Maheswar1; RUPAKHETIDipesh7
刊名Advances in Climate Change Research
出版日期2024-08
卷号15页码:647-657
关键词Tibetan Plateau Thaw-subsidence Soil organic carbon Microbial necromass carbon Amino sugars FATTY-ACID PROFILES ORGANIC-MATTER SOIL BACTERIAL COMMUNITIES RELEVANCE PLANT
ISSN号0016-7061
DOI10.1016/j.accre.2024.07.002
文献子类Article
英文摘要Climate warming is causing rapid permafrost degradation, including thaw-induced subsidence, potentially resulting in heightened carbon release. Nevertheless, our understanding of the levels and variations of carbon components in permafrost, particularly during the degradation process, remains limited. The uncertainties arising from this process lead to inaccurate assessments of the climate effects during permafrost degradation. With vast expanses of permafrost in the Tibetan Plateau, there is limited research available on SOC components, particularly in the central Tibetan Plateau. Given remarkable variations in hydrothermal conditions across different areas of the Tibetan Plateau, the existing limited studies make it challenging to assess the overall SOC components in the permafrost across the Tibetan Plateau and simulate their future changes. In this study, we examined the properties of soil organic carbon (SOC) and microbial necromass carbon (MicrobialNC) in a representative permafrost thaw-subsidence area at the southern edge of continuous permafrost in the central Tibetan Plateau. The results indicate that prior to the thaw subsidence, the permafrost had a SOC content of 72.68 ± 18.53 mg g-1, with MicrobialNC accounting for 49.6%. The thaw-subsidence of permafrost led to a 56.4% reduction in SOC, with MicrobialNC accounting for 70.0% of the lost SOC. MicrobialNC constitutes the primary component of permafrost SOC, and it is the main component that is lost during thaw-subsidence formation. Changes in MicrobialNC are primarilycorrelated with factors pH, plant input, and microbial properties. The present study holds crucial implications for both the ecological and biogeochemical processes associated with carbon release from permafrost, and it furnishes essential data necessary for modeling the global responseof permafrost to climate warming. Based on this study and previous research, permafrost thawing in the Tibetan Plateau causes substantial loss of SOC. However, there's remarkable heterogeneity in SOC component changes across different regions, warranting further in-depth investigation.
WOS关键词001309033100001
WOS研究方向Soil Science
语种英语
WOS记录号WOS:000934102400001
源URL[http://ir.yic.ac.cn/handle/133337/40049]  
专题个人在本单位外知识产出
通讯作者YIN Xiu-Feng
作者单位1.Research Institute for Sustainability-Helmholtz Centre Potsdam, Potsdam 14467, Germany
2.Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332900, China
3.State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, and College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
4.University of Chinese Academy of Sciences, Beijing 100049, China
5.Cryosphere Research Station on the Qinghai‒Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
6.Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, Chinaademy of Sciences, Lanzhou 730000, China
7.Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
推荐引用方式
GB/T 7714		 ZHOU Wen-Ting,LI Quan-Lian,KANG Shi-Chang,et al. Profound loss of microbial necromass carbon in permafrost thaw-subsidence in the central Tibetan Plateau[J]. Advances in Climate Change Research,2024,15:647-657.
APA ZHOU Wen-Ting.,LI Quan-Lian.,KANG Shi-Chang.,WU Xiao-Dong.,MA Tian.,...&YIN Xiu-Feng.(2024).Profound loss of microbial necromass carbon in permafrost thaw-subsidence in the central Tibetan Plateau.Advances in Climate Change Research,15,647-657.
MLA ZHOU Wen-Ting,et al."Profound loss of microbial necromass carbon in permafrost thaw-subsidence in the central Tibetan Plateau".Advances in Climate Change Research 15(2024):647-657.

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来源：烟台海岸带研究所

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