J Integr Plant Biol ›› 2022, Vol. 64 ›› Issue (11): 2126-2134.DOI: 10.1111/jipb.13361

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  • 收稿日期:2022-03-31 接受日期:2022-09-08 出版日期:2022-11-01 发布日期:2022-11-17

Assembly dynamics of East Asian subtropical evergreen broadleaved forests: New insights from the dominant Fagaceae trees

Lisi Hai1,2, Xiao‐Qian Li1,2, Jing‐Bo Zhang1, Xiao‐Guo Xiang3, Rui‐Qi Li1, Florian Jabbour4, Rosa del C. Ortiz5, An‐Ming Lu1, Zhi‐Duan Chen1* and Wei Wang1,2*   

  1. 1 State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
    3 Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang 330031, China
    4 Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris 75005, France
    5 Missouri Botanical Garden, St. Louis, Missouri 63166‐0299, USA

    *Correspondences: Wei Wang (wangwei1127@ibcas.ac.cn, Dr. Wang is fully responsible for the distributions of all materials associated with this article); Zhi‐Duan Chen (zhiduan@ibcas.ac.cn)
  • Received:2022-03-31 Accepted:2022-09-08 Online:2022-11-01 Published:2022-11-17

Abstract:

The dominant species of a biome can be regarded as its genuine indicator. Evergreen broadleaved forests (EBLFs) in subtropical East Asia harbor high levels of species biodiversity and endemism and are vital to regional carbon storage and cycling. However, the historical assembly of this unique biome is still controversial. Fagaceae is the most essential family in East Asian subtropical EBLFs and its dominant species are vital for the existence of this biome. Here, we used the dominant Fagaceae species to shed light on the dynamic process of East Asian subtropical EBLFs over time. Our results indicate high precipitation in summer and low temperature in winter are the most influential climatic factors for the distribution of East Asian subtropical EBLFs. Modern East Asian subtropical EBLFs did not begin to appear until 23 Ma, subsequently experienced a long-lasting development in the Miocene and markedly deteriorated at about 4 Ma, driven jointly by orogenesis and paleoclimate. We also document that there is a lag time between when one clade invaded the region and when its members become dominant species within the region. This study may improve our ability to predict and mitigate the threats to biodiversity of East Asian subtropical EBLFs and points to a new path for future studies involving multidisciplinary methods to explore the assembly of regional biomes.

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