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100 _aQian, Hao
_952464
245 _aDifferentiated roles of mean climate and climate stability on post-glacial birch distributions in northern China/
260 _bsage
_c2019
300 _aVol 29, Issue 11, 2019 : (1758-1766 p.).
520 _aPast changes in the distribution of tree species are critical to predict future vegetation dynamics under changing climate conditions. In this study, pollen-based reconstruction with 60 pollen records from mid-latitude region was performed in China. Betula emerged after the Last Glacial Maximum (LGM), when the climate ameliorated gradually. The distribution range was small but increased significantly during the early Holocene. However, when the climate was wet and warm during the mid-Holocene, the distribution range did not continue to expand. The relationships between the percentages of Betula pollen and the strength of the East Asian summer monsoon (EASM) or its variability were positively correlated, while those of Betula and Pinus had opposite trends in the study region. Besides, the post-glacial distribution dynamics of Betula platyphylla and Betula dahurica were influenced by climate change which were simulated by species distribution models (SDMs). We conclude that birch distribution in mid-latitudinal northern China was mainly driven by the EASM or its variability, especially during the LGM and early Holocene when the climate was unstable, while the replacement by Pinus and Quercus occurred during the mid-Holocene when the climate remained stable. The future unstable climate may benefit birch development.
650 _aBetula,
_952465
650 _a climate stability,
_952466
650 _a East Asian summer monsoon,
_952467
650 _a pollen,
_951526
650 _aspecies distribution models
_952468
700 _aHongyan, Liu
_952469
700 _aShilei, Yang
_952470
773 0 _012756
_916504
_dLondon: Sage Publication Ltd, 2019.
_tHolocene/
_x09596836
856 _uhttps://doi.org/10.1177/0959683619862038
942 _2ddc
_cART
999 _c12892
_d12892