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| Pollen-based reconstructions of Holocene vegetation and climatic change of Tibetan Plateau | |
| 作者姓名： | 唐领余 李春海 于革 沈才明 |
| 作者单位： | Nanjing Institute of Geology and palaeontology，CAS，Nanjing 210008，china，Nanjing Institute of Geology and palaeontology，CAS，Nanjing 210008，china，Nanjing Institute of Geography and Limnology，CAS，Nanjing 210008，China，Louisiana State Uuniversity，Baton Rouge，LA 70803，USA |
| 基金项目： | 国家重点项目，the Chinese Academy and the National Science Committee of China and Major Projects of Knowledge Innovation Program CAS |
| 摘 要： | A synthesis of Holocene pollen records from the Tibetan Plateau shows the history of vegetation and climatic changes during the Holocene. Palynological evidences from 24 cores/sections have been compiled and show that the vegetation shifted from subalpine/alpine conifer forest to subalpine/alpine evergreen sclerophyllous forest in the southeastern part of the plateau; from alpine steppe to alpine desert in the central, western and northern part; and from alpine meadow to alpine steppe in the eastern and southern plateau regions during the Holocene. These records show that increases in precipitation began about 9 ka from the southeast, and a wide ranging level of increased humidity developed over the entire of the plateau around 8-7 ka, followed by aridity from 6 ka and a continuous drying over the plateau after 4-3 ka. The changes in Holocene climates of the plateau can be interpreted qualitatively as a response to orbital forcing and its secondary effects on the Indian Monsoon which expanded northwards |
Pollen-based reconstructions of Holocene vegetation and climatic change of Tibetan Plateau |
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| Tang Lingyu,Li Chunhai and Shen Caiming Nanjing Institute of Geology and Palaeontology,CAS,Nanjing ,China Nanjing Institute of Geography and Limnology,CAS,Nanjing ,China Louisiana State Uuniversity,Baton Rouge,LA ,USA.Pollen-based reconstructions of Holocene vegetation and climatic change of Tibetan Plateau[J].Chinese Journal of Polar Science,2003,14(2). | |
| Authors: | Tang Lingyu Li Chunhai and Shen Caiming Nanjing Institute of Geology and Palaeontology CAS Nanjing China Nanjing Institute of Geography and Limnology CAS Nanjing China Louisiana State Uuniversity Baton Rouge LA USA |
| Institution: | 1. Nanjing Institute of Geology and Palaeontology, CAS, Nanjing 210008, China 2. Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, China 3. Louisiana State Uuniversity, Baton Rouge, LA 70803, USA |
| Abstract: | A synthesis of Holocene pollen records from the Tibetan Plateau shows the history of vegetation and climatic changes during the Holocene. Palynological evidences from 24 cores/sections have been compiled and show that the vegetation shifted from subalpine/alpine conifer forest to subalpine/alpine evergreen sclerophyllous forest in the southeastern part of the plateau; from alpine steppe to alpine desert in the central, western and northern part; and from alpine meadow to alpine steppe in the eastern and southern plateau regions during the Holocene. These records show that increases in precipitation began about 9 ka from the southeast, and a wide ranging level of increased humidity developed over the entire of the plateau around 8-7 ka, followed by aridity from 6 ka and a continuous drying over the plateau after 4-3 ka. The changes in Holocene climates of the plateau can be interpreted qualitatively as a response to orbital forcing and its secondary effects on the Indian Monsoon which expanded northwards during the early Holocene and retreated from the plateau since the mid-Holocene. Also, there is teleconnection between the Tibetan Plateau and North Atlantic. |
| Keywords: | pollen spatial pattern alpine vegetation Holocene Tibetan Plateau |
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