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题名: Ecological stability during the LGM and the mid-Holocene in the Alpine Steppes of Tibet?
作者: Miehe, Georg1; Miehe, Sabine1; Bach, Kerstin1; Kluge, Juergen1; Wesche, Karsten2; Yang Yongping(杨永平)3; Liu Jianquan4
刊名: QUATERNARY RESEARCH
关键词: Steppe ; Qinghai-Tibet Plateau ; Grazing ; Endemics ; LGM ; Mid-Holocene optimum
英文摘要: Arid and Alpine ecosystems are known for extreme environmental changes during the Late Quaternary. We hypothesize that the world's largest Alpine arid ecosystem however, the Alpine Steppes of the Tibetan highlands, remained ecologically stable during the LGM and the mid-Holocene. This hypothesis is tested by distributional range of plant species, plant life forms and rate of endemism. The set of character species has a precipitation gradient between 50 and 350 mm/a, testifying for resilience to precipitation changes. 83% of the species have a wider vertical range than 1000 m used as a proxy for resilience to temperature changes. 30% of the species are endemic with 10 endemic genera, including plate-shaped cushions as a unique plant life form. These findings are in line with palaeo-ecological proxies (delta O-18, pollen) allowing the assumption that Alpine Steppes persisted during the LGM with 3 to 4 K lower summer temperatures.
出版日期: 2011-09-01
卷号: 76, 期号:2, 页码:243-252
语种: 英语
收录类别: SCI
学科分类: Physical Geography; Geology
ISSN号: 0033-5894
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/5265
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Univ Marburg, Fac Geog, D-35032 Marburg, Germany
2.Senckenberg Museum Nat Hist Gorlitz, D-02806 Goerlitz, Germany
3.Chinese Acad Sci, Inst Tibetan Plateau Res Kunming, Kunming Inst Bot, Kunming 650204, Peoples R China
4.Lanzhou Univ, Inst Mol Ecol, MOE Key Lab Arid & Grassland Ecol, Sch Life Sci, Lanzhou 730000, Gansu, Peoples R China

Recommended Citation:
Miehe, G; Miehe, S; Bach, K; Kluge, J; Wesche, K; Yang, YP; Jianquan, LQ.Ecological stability during the LGM and the mid-Holocene in the Alpine Steppes of Tibet?,QUATERNARY RESEARCH,2011,76(2):243-252
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