气候变化领域集成服务门户(CCPortal): Pollen-based quantitative land-cover reconstruction for northern Asia covering the last 40 ka cal BP

CCPortal

DOI	10.5194/cp-15-1503-2019
	Pollen-based quantitative land-cover reconstruction for northern Asia covering the last 40 ka cal BP
	Cao X.; Tian F.; Li F.; Gaillard M.J.; Rudaya N.; Xu Q.; Herzschuh U.
发表日期	2019
ISSN	18149324
起始页码	1503
结束页码	1536
卷号	15 期号:4
英文摘要	We collected the available relative pollen productivity estimates (PPEs) for 27 major pollen taxa from Eurasia and applied them to estimate plant abundances during the last 40 ka cal BP (calibrated thousand years before present) using pollen counts from 203 fossil pollen records in northern Asia (north of 40° N). These pollen records were organized into 42 site groups and regional mean plant abundances calculated using the REVEALS (Regional Estimates of Vegetation Abundance from Large Sites) model. Time-series clustering, constrained hierarchical clustering, and detrended canonical correspondence analysis were performed to investigate the regional pattern, time, and strength of vegetation changes, respectively. Reconstructed regional plant functional type (PFT) components for each site group are generally consistent with modern vegetation in that vegetation changes within the regions are characterized by minor changes in the abundance of PFTs rather than by an increase in new PFTs, particularly during the Holocene. We argue that pollen-based REVEALS estimates of plant abundances should be a more reliable reflection of the vegetation as pollen may overestimate the turnover, particularly when a high pollen producer invades areas dominated by low pollen producers. Comparisons with vegetation-independent climate records show that climate change is the primary factor driving land-cover changes at broad spatial and temporal scales. Vegetation changes in certain regions or periods, however, could not be explained by direct climate change, e.g. inland Siberia, where a sharp increase in evergreen conifer tree abundance occurred at ca. 7-8 ka cal BP despite an unchanging climate, potentially reflecting their response to complex climate-permafrost-fire-vegetation interactions and thus a possible long-term lagged climate response. © Author(s) 2019.
语种	英语
scopus关键词	abundance; climate variation; coniferous tree; correspondence analysis; fossil record; land cover; paleoclimate; pollen; reconstruction; vegetation dynamics; Asia; Eurasia; Siberia; Coniferophyta
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146787
作者单位	Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A43, Potsdam, 14473, Germany; Department of Biology and Environmental Science, Linnaeus University, Kalmar, 39182, Sweden; Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences, pr. Akad. Lavrentieva 17, Novosibirsk, 630090, Russian Federation; Institute of Environmental Science and Geography, University of Potsdam, Karl-Liebknecht-Str. 24, Potsdam, 14476, Germany; College of Resources and Environment Science, Hebei Normal University, Shijiazhuang, 050024, China; Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24, Potsdam, 14476, Germany; Key Laboratory of Alpine Ecology, CAS Center for Excellence in Tibetan Plateau Earth Sciences, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China
推荐引用方式 GB/T 7714	Cao X.,Tian F.,Li F.,et al. Pollen-based quantitative land-cover reconstruction for northern Asia covering the last 40 ka cal BP[J],2019,15(4).
APA	Cao X..,Tian F..,Li F..,Gaillard M.J..,Rudaya N..,...&Herzschuh U..(2019).Pollen-based quantitative land-cover reconstruction for northern Asia covering the last 40 ka cal BP.Climate of the Past,15(4).
MLA	Cao X.,et al."Pollen-based quantitative land-cover reconstruction for northern Asia covering the last 40 ka cal BP".Climate of the Past 15.4(2019).