The LGM refugia of deciduous oak and distribution development since the LGM in China  

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作  者:Qian HAO Hongyan LIU Ying CHENG Zhaoliang SONG 

机构地区:[1]Institute of Surface-Earth System Science,School of Earth System Science,Tianjin University,Tianjin 300072,China [2]College of Urban and Environmental Sciences,Peking University,Beijing 100871,China [3]School of Geography and Tourism,Shaanxi Normal University,Xi’an 710119,China

出  处:《Science China Earth Sciences》2023年第1期80-91,共12页中国科学(地球科学英文版)

基  金:supported by the National Key Research and Development Program of China(Grant No.2017YFA0605101)。

摘  要:The distribution development of oak has significant effects on ecosystems and society.Long-term forest distribution studies can help to better understand the vegetation dynamics under climate change or human activities in the future.In this study,we integrated different methods(i.e.,palaeoecology,phylogeography,and species distribution models)to investigate the likely locations of glacial refugia and the postglacial development of the main deciduous oak species(i.e.,Quercus variabilis,Q.mongolica,Q.dentata,Q.aliena,Q.acutissima and Q.liaotungensis).The results indicated that mountains such as the Changbai,Qinling,and Dabie Mountains acted as the refugia in northern and central China during the Last Glacial Maximum(LGM).The present Quercus in northern China could be the result of local dispersal during the postglacial period rather than only that of long-distance migration from south to north.Climate was the main influencing factor for oak migration,while human activities did not show much influence on this widespread genus.The topography acted as a buffer and made the mountains act as refugia under a deteriorated climate.Compared with other main tree genera(e.g.,Pinus and Betula),the refugia locations and migration routes of deciduous oak species were different because of their physiological differences.The individual migration dynamics of these three genera need to be considered when modelling their dynamics.

关 键 词:QUERCUS Pollen analysis Species distribution model Chloroplast DNA Precipitation 

分 类 号:P532[天文地球—古生物学与地层学]

 

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