globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2016.11.027
论文题名:
Pollen-climate relationships in time (9 ka, 6 ka, 0 ka) and space (upland vs. lowland) in eastern continental Asia
作者: Tian F.; Cao X.; Dallmeyer A.; Zhao Y.; Ni J.; Herzschuh U.
刊名: Quaternary Science Reviews
出版年: 2017
卷: 156
起始页码: 1
结束页码: 11
语种: 英语
英文关键词: Boosted regression trees ; China ; Holocene ; Niche stability ; Pollen-climate relationship ; Uniformitarianism
Scopus关键词: Carbon dioxide ; Climate models ; Forestry ; Vegetation ; Boosted regression trees ; China ; Holocenes ; Pollen-climate relationship ; Uniformitarianism ; Climate change ; air temperature ; arid region ; atmosphere-biosphere interaction ; climate change ; coniferous tree ; future prospect ; Holocene ; niche partitioning ; paleobotany ; pollen ; precipitation (climatology) ; reconstruction ; regression analysis ; spatiotemporal analysis ; China ; Mongolia ; Qinghai-Xizang Plateau ; Abies ; Amaranthaceae ; Artemisia ; Betula ; Cyperaceae ; Ephedra ; Picea ; Poaceae ; Quercus
英文摘要: Temporal and spatial stability of the vegetation–climate relationship is a basic ecological assumption for pollen-based quantitative inferences of past climate change and for predicting future vegetation. We explore this assumption for the Holocene in eastern continental Asia (China, Mongolia). Boosted regression trees (BRT) between fossil pollen taxa percentages (Abies, Artemisia, Betula, Chenopodiaceae, Cyperaceae, Ephedra, Picea, Pinus, Poaceae and Quercus) and climate model outputs of mean annual precipitation (Pann) and mean temperature of the warmest month (Mtwa) for 9 and 6 ka (ka = thousand years before present) were set up and results compared to those obtained from relating modern pollen to modern climate. Overall, our results reveal only slight temporal differences in the pollen–climate relationships. Our analyses suggest that the importance of Pann compared with Mtwa for taxa distribution is higher today than it was at 6 ka and 9 ka. In particular, the relevance of Pann for Picea and Pinus increases and has become the main determinant. This change in the climate–tree pollen relationship parallels a widespread tree pollen decrease in north-central China and the eastern Tibetan Plateau. We assume that this is at least partly related to vegetation–climate disequilibrium originating from human impact. Increased atmospheric CO2 concentration may have permitted the expansion of moisture-loving herb taxa (Cyperaceae and Poaceae) during the late Holocene into arid/semi-arid areas. We furthermore find that the pollen–climate relationship between north-central China and the eastern Tibetan Plateau is generally similar, but that regional differences are larger than temporal differences. In summary, vegetation–climate relationships in China are generally stable in space and time, and pollen-based climate reconstructions can be applied to the Holocene. Regional differences imply the calibration-set should be restricted spatially. © 2016 Elsevier Ltd
资助项目: Cao, X. ; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A43, Germany ; 电子邮件: Xianyong.Cao@awi.de
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59341
Appears in Collections:过去全球变化的重建

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作者单位: Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A43, Potsdam, Germany; Max Planck Institute for Meteorology, KlimaCampus, Bundesstrasse 53, Hamburg, Germany; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Datun Road 11, Beijing, China; University of Chinese Academy of Sciences, Yuquan Road 19, Beijing, China; College of Chemistry and Life Sciences, Zhejiang Normal University, Yingbin Road 688, Jinhua, China; Institute of Earth and Environment Science, University of Potsdam, Karl-Liebknecht-Str. 24, Potsdam, Germany; Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24, Potsdam, Germany

Recommended Citation:
Tian F.,Cao X.,Dallmeyer A.,et al. Pollen-climate relationships in time (9 ka, 6 ka, 0 ka) and space (upland vs. lowland) in eastern continental Asia[J]. Quaternary Science Reviews,2017-01-01,156
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