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Quantitative woody cover reconstructions from eastern continental Asia of the last 22 kyr reveal strong regional peculiarities
Fang Tian;  Xianyong Cao;  Anne Dallmeyer;  Jian Ni;  Yan Zhao;  Yongbo Wang;  Ulrike Herzschuh
2016
发表期刊Quaternary Science Reviews
卷号137页码:33-44
摘要

We present a calibration-set based on modern pollen and satellite-based Advanced Very High Resolution Radiometer (AVHRR) observations of woody cover (including needleleaved, broadleaved and total tree cover) in eastern continental Asia, which shows good performance under cross-validation with the modern analogue technique (all the coefficients of determination between observed and predicted values are greater than 0.65). The calibration-set is used to reconstruct woody cover from a taxonomically harmonized and temporally standardized fossil pollen dataset (including 274 cores) with 500-year resolution over the last 22 kyr. The spatial range of forest has not noticeably changed in eastern continental Asia during the last 22 kyr, although woody cover has, especially at the margin of the eastern Tibetan Plateau and in the forest-steppe transition area of north-central China. Vegetation was sparse during the LGM in the present forested regions, but woody cover increased markedly at the beginning of the Bølling/Allerød period (B/A; ca. 14.5 ka bp) and again at the beginning of the Holocene (ca. 11.5 ka bp), and is related to the enhanced strength of the East Asian Summer Monsoon. Forest flourished in the mid-Holocene (ca. 8 ka bp) possibly due to favourable climatic conditions. In contrast, cover was stable in southern China (high cover) and arid central Asia (very low cover) throughout the investigated period. Forest cover increased in the north-eastern part of China during the Holocene. Comparisons of these regional pollen-based results with simulated forest cover from runs of a global climate model (for 9, 6 and 0 ka bp (ECHAM5/JSBACH ∼1.125° spatial resolution)) reveal many similarities in temporal change. The Holocene woody cover history of eastern continental Asia is different from that of other regions, likely controlled by different climatic variables, i.e. moisture in eastern continental Asia; temperature in northern Eurasia and North America.

关键词Pollen avhrr modern Analogue Technique quantitative Reconstruction east Asian Summer Monsoon
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/9626
专题环境地球化学国家重点实验室
作者单位1.Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A43, Potsdam 14473, Germany
2.Institute of Earth and Environment Science, University of Potsdam, Karl-Liebknecht-Str. 24, Potsdam 14476, Germany
3.Max Planck Institute for Meteorology, KlimaCampus, Bundesstrasse 53, Hamburg 20146, Germany
4.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guanshui Road 46, Guiyang 550002, China
5.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Datun Road 11, Beijing 100101, China
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Fang Tian;Xianyong Cao;Anne Dallmeyer;Jian Ni;Yan Zhao;Yongbo Wang;Ulrike Herzschuh. Quantitative woody cover reconstructions from eastern continental Asia of the last 22 kyr reveal strong regional peculiarities[J]. Quaternary Science Reviews,2016,137:33-44.
APA Fang Tian;Xianyong Cao;Anne Dallmeyer;Jian Ni;Yan Zhao;Yongbo Wang;Ulrike Herzschuh.(2016).Quantitative woody cover reconstructions from eastern continental Asia of the last 22 kyr reveal strong regional peculiarities.Quaternary Science Reviews,137,33-44.
MLA Fang Tian;Xianyong Cao;Anne Dallmeyer;Jian Ni;Yan Zhao;Yongbo Wang;Ulrike Herzschuh."Quantitative woody cover reconstructions from eastern continental Asia of the last 22 kyr reveal strong regional peculiarities".Quaternary Science Reviews 137(2016):33-44.
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