Impact of a retrogressive thaw slump on surrounding vegetation communities in the Fenghuoshan mountains,Qinghai-Tibet Plateau  

作　　者：Gang Wei LaJia Weisai ZiJie Zhou XinNing Wu SiRu Gao ZiTeng Fu QingBai Wu GuanLi Jiang 

机构地区：[1]Environmental Geological Prospecting Bureau of Qinghai Province,Xining,Qinghai 810008,China [2]Key Laboratory of Qinghai Environmental Geology,Xining,Qinghai 810008,China [3]Qinghai Geological Environment Monitoring Station,Xining,Qinghai 810008,China [4]School of Geological Engineering and Geomatics,Chang'an University,Xi'an,Shaanxi 710054,China [5]State Key Laboratory of Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China [6]Beiluhe Observation Station of Frozen Soil Environment and Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China [7]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Research in Cold and Arid Regions》2023年第1期11-17,共7页寒旱区科学（英文版）

基　　金：funded by the Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (Grant No.2021QZKK0201);the State Key Laboratory of Frozen Soil Engineering Funds (SKLFSE-ZT-202109);the fund of Qinghai Provincial Investigation Project“Study on permafrost degradation and its geological hazard effect” (E1490604).

摘　　要：Under global warming,permafrost around the world is experiencing degradation which is especially so on the Third Pole,the Qinghai-Tibet Plateau(QTP),China.Retrogressive thaw slump(RTS)is one of the thermokarst features caused by rapid degradation of ice rich permafrost,which transforms landforms and threatens infrastructures,and even affects the terrestrial carbon cycle.In this work,vegetation communities surrounding a RTS in the Fenghuoshan Mountains of the interior portion of the Qinghai-Tibet Plateau have been investigated to examine the impact from RTS.This investigation indicates that the occurrence of RTS influences the vegetation community by altering their habitats,especially the soil water content,which forces the vegetation community to evolve in order to adapt to the alterations.In the interior part of RTS where it has been disturbed tremendously,alterations have produced a wider niche and richer plant species.This favors species of a wet environment in a habitat where it was a relatively dry environment of alpine steppe prior to the occurrence of RTS.This study adds to limited observations regarding the impact of RTS to vegetation community on the QTP and helps us to reach a broader understanding of the effects of permafrost degradation as well as global warming.

关 键 词：Retrogressive thaw slump Vegetation community Rapid permafrost degradation Global warming Qinghai-Tibet plateau 

分 类 号：Q948[生物学—植物学] P642.22[天文地球—工程地质学]