兰州大学机构库 >资源环境学院
Holocene treeline shifts and monsoon variability in the Hengduan Mountains (southeastern Tibetan Plateau), implications from palynological investigations
Kramer, Annette1,2; Herzschuh, Ulrike1,3; Mischke, Steffen2; Zhang, Chengjun4
2010-02-01
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN0031-0182
Volume286Issue:1-2Pages:23-41
AbstractThe upper 8.45 m of a sediment core from Lake Naleng were analysed for its pollen and charcoal content to detect vegetation, climate, and human activity changes on the southeastern Tibetan Plateau (TP) since the Pleistocene-Holocene transition (11.7 cal kyr BP). The application of pollen indicator taxa, pollen sums, biomisation, and multivariate analysis helped to reconstruct environmental conditions during the Holocene. Furthermore, 64 surface samples from the southeastern TP and its foreland were analysed to investigate the relationship between modern pollen assemblages and vegetation. The modern vegetation was recorded in the surface pollen assemblages by pollen indicator types, although sediments also contain pollen spectra extra-regional pollen transported from lower vegetation belts, which is seen as a consequence of steep elevation gradients at the southeastern margin of the TP. The relation between different vegetation belts and temperature from the modern sample sites was used to infer quantitative temperature trends for the Holocene record. Spreading of forests at the beginning of the Holocene marks the transition to warmer conditions. From 10.7 to similar to 4.4 cal kyr BP open Abies-Betula forests were found at Lake Naleng probably reflecting a stronger-than-present summer monsoon. Temperature range reconstructions suggest a temperature that was about 2-3 degrees C warmer and a treeline position that was 400-600 m higher than today. A severe climate deterioration with temperatures about 1-2 degrees C colder than before is documented by a retreating forest between 8.1 and 7.2 cal kyr BP. Forests retreated while subalpine Rhododendron shrubs spread around Lake Naleng indicating colder conditions with temperatures 1-2 degrees C below early and mid Holocene level after 4.4 cal kyr BP. The forest decline at 4.4 cal kyr BP is considered to reflect climatic conditions as low concentrations of charcoal particles found in this period exclude human-induced fires as reason for the forest retreat. However, grazing indicators imply human influence on the environment since 3.4 cal kyr BP around Lake Naleng. We therefore consider the rapid treeline shift seen at 3.4 cal kyr BP as partly generated by human activity and partly by climatic conditions. (C) 2009 Elsevier B.V. All rights reserved.
KeywordTibetan Plateau Holocene Pollen analysis Human impact Monsoon Multivariate analysis Biomisation
Subject AreaPhysical Geography ; Geology ; Paleontology
PublisherELSEVIER
DOI10.1016/j.palaeo.2009.12.001
Publication PlaceAMSTERDAM
Indexed BySCIE
Language英语
First Inst
Funding Project德国科学基金会项目
Project NumberDeutsche Forschungsgemeinschaft [DFG He 3622/3-1, Mi 730/1-1]
WOS IDWOS:000274970400003
Funding OrganizationDFG
SubtypeArticle
Department[Kramer, Annette;
Herzschuh, Ulrike] Alfred Wegener Inst Polar & Marine Res, D-14473 Potsdam, Germany;
[Kramer, Annette;
Mischke, Steffen] Free Univ Berlin, Inst Geol Sci, D-12249 Berlin, Germany;
[Herzschuh, Ulrike] Univ Potsdam, Dept Geosci, Potsdam, Germany;
[Zhang, Chengjun] Lanzhou Univ, Ctr Arid Environm & Paleoclimate Res, Lanzhou 730000, Peoples R China
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/119931
Collection资源环境学院
地质科学与矿产资源学院
Corresponding AuthorKramer, Annette
Affiliation
1.Alfred Wegener Inst Polar & Marine Res, D-14473 Potsdam, Germany
2.Free Univ Berlin, Inst Geol Sci, D-12249 Berlin, Germany
3.Univ Potsdam, Dept Geosci, Potsdam, Germany
4.Lanzhou Univ, Ctr Arid Environm & Paleoclimate Res, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Kramer, Annette,Herzschuh, Ulrike,Mischke, Steffen,et al. Holocene treeline shifts and monsoon variability in the Hengduan Mountains (southeastern Tibetan Plateau), implications from palynological investigations[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2010,286(1-2):23-41.
APA Kramer, Annette,Herzschuh, Ulrike,Mischke, Steffen,&Zhang, Chengjun.(2010).Holocene treeline shifts and monsoon variability in the Hengduan Mountains (southeastern Tibetan Plateau), implications from palynological investigations.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,286(1-2),23-41.
MLA Kramer, Annette,et al."Holocene treeline shifts and monsoon variability in the Hengduan Mountains (southeastern Tibetan Plateau), implications from palynological investigations".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 286.1-2(2010):23-41.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Altmetrics Score
Google Scholar
Similar articles in Google Scholar
[Kramer, Annette]'s Articles
[Herzschuh, Ulrike]'s Articles
[Mischke, Steffen]'s Articles
Baidu academic
Similar articles in Baidu academic
[Kramer, Annette]'s Articles
[Herzschuh, Ulrike]'s Articles
[Mischke, Steffen]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Kramer, Annette]'s Articles
[Herzschuh, Ulrike]'s Articles
[Mischke, Steffen]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Kramer-2010-Holocene treeline shifts and monso.pdf
Format: Adobe PDF
No comment.
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.