Temporal and spatial changes of vegetation cover on the Chinese Loess Plateau through the last glacial cycle: evidence from spore-pollen records |
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| Affiliation: | 1. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, China;2. Department of Archaeology & Natural History, College of Asia and the Pacific, Australian National University, Canberra, Australian Capital Territory 0200, Australia;3. School of Atmospheric Science, Nanjing University, Nanjing 210093, China;1. College of Mining Technology, Taiyuan University of Technology, Taiyuan 030024, China;2. Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;3. College of Resources, Environment and Tourism, Capital Normal University, Beijing 100048, China;4. Department of Ocean Science and Engineering, South University of Science and Technology, Shenzhen 518055, China;5. Department of Earth and Environmental Sciences, University of Windsor, Windsor, ON N9B 3P4, Canada;6. Department of Chemistry & Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada;7. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, China;8. College of Earth and Environmental Sciences, MOE Key Laboratory of Western China''s Environmental Systems, Lanzhou University, Lanzhou 730000, China;9. Laboratory for Marine Geology, Qingdao National Oceanography Laboratory for Science and Technology, Qingdao 266237, China;1. College of Resource Environment and Tourism, Hubei University of Arts and Science, Xiangyang 441053, China;2. State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China;3. Key Laboratory of Plateau Geographical Process and Environmental Change of Yunnan Province, School of Tourism and Geographical Sciences, Yunnan Normal University, Kunming 650500, China |
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| Abstract: | To reconstruct the palaeovegetation cover of the Chinese Loess Plateau over different time intervals of the last glacial–interglacial cycle, the spore-pollen representation of loess-soil samples in six loess sections along a north–south transect is analyzed and previously published pollen data reviewed. Results show that the temporal changes in the vegetation cover of the Plateau are controlled essentially by the history of the East-Asian summer monsoon; there is a general pattern that the pollen components indicating relatively humid climatic conditions are better represented during interglacial and interstadial periods than during glacial and stadial periods. The herbaceous pollen concentrations show a general increase from south to north with the decrease of monsoonal precipitation over the Loess Plateau. Through the last 130 ka or so, the main body of the Loess Plateau has been covered by an Artemisia-dominated grassland vegetation, suggesting that future rehabilitation of the landscape that aims for soil–water preservation on the Loess Plateau should focus on the planting of herbs. |
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