首页|Impacts of climate-induced permafrost degradation on vegetation:A review

Impacts of climate-induced permafrost degradation on vegetation:A review

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Under a warming climate,degrading permafrost profoundly and extensively affects arctic and alpine ecology.However,most existing relevant studies are more focused on the hydrothermal impacts of vegetation on the underlying permafrost,or symbiosis between vegetation and permafrost,only very few on ecological impacts of permafrost degradation.Additionally,there are much more pertinent investigations in arctic and boreal regions than those in alpine and high-plateau regions at mid-and low latitudes.This study emphasizes on the impact mechanisms of permafrost degradation on vegetation both at high and mid-to low latitudes,addressing vegetation succession trajectories and associated changes in soil hydrology and soil nutrient above degrading permafrost.Permafrost degradation influences vegetation by altering soil hydrology,soil biogeochemical processes and microbial communities,which further improve soil nutrient availability.Furthermore,under a warming climate,vegetation may take two successional trajectories,towards a wetter or drier ecosystem within a certain time period,but to a drier ecosystem in the end upon the thaw of permafrost in case of permeable soils and good drainage.Thus,with rapidly developing remote-sensing and other space-and ground-based and air-borne observational networks and numerical predictive models,the impacting mechanisms of permafrost degradation on vegetation should be timely and better monitored,evaluated and modeled at desired spatiotemporal scales and resolutions by terrestrial or integrated ecosystem models.

Degrading permafrostVegetationImpact mechanismsClimate warmingEcological impacts

JIN Xiao-Ying、JIN Hui-Jun、Go IWAHANA、Sergey S.MARCHENKO、LUO Dong-Liang、LI Xiao-Ying、LIANG Si-Hai

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Northeast-China Observatory and Research Station of Permafrost Geological Environment(Ministry of Education),School of Civil Engineering,Institute of Cold Region Science and Technology,Northeast Forestry University,Harbin,150040,China

State Key Laboratory of Frozen Soils Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,730000,China

College of Resources and Environment,University of Chinese Academy of Sciences,Beijing,100049,China

International Arctic Research Center University of Alaska Fairbanks,Fairbanks,99775,USA

Permafrost Lab,Geophysical Institute,University of Alaska Fairbanks,Fairbanks,99775,USA

School of Water Resources and Environment,China University of Geosciences,Beijing,100083,China

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This research is financially supported by the National Natural Science Foundation of China(NSFC)ProgramState Key Laboratory of Frozen Soils Engineering(SKLFSE)programand Chinese Academy of Sciences(CAS)Department of Interna-tional Cooperation Key Program on Changes in permafrost in China##

41871052SKLFSE201811

2021

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

CSCDSCI
影响因子：0.806
ISSN：1674-9278
年,卷(期)：2021.12(1)
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