globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.04.007
论文题名:
Modelling vegetation change during Late Cenozoic uplift of the East African plateaus
作者: Fer I.; Tietjen B.; Jeltsch F.; Trauth M.H.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 467
起始页码: 120
结束页码: 130
语种: 英语
英文关键词: Climate change ; Dynamic vegetation models ; East Africa ; Evolution ; Late Cenozoic ; Palaeovegetation
英文摘要: The present-day vegetation in the tropics is mainly characterized by forests worldwide except in tropical East Africa, where forests only occur as patches at the coast and in the uplands. These forest patches result from the peculiar aridity that is linked to the uplift of the region during the Late Cenozoic. The Late Cenozoic vegetation history of East Africa is of particular interest as it has set the scene for the contemporary events in mammal and hominin evolution. In this study, we investigate the conditions under which these forest patches could have been connected, and a previous continuous forest belt could have extended and fragmented. We apply a dynamic vegetation model with a set of climatic scenarios in which we systematically alter the present-day environmental conditions such that they would be more favourable for a continuous forest belt in tropical East Africa. We consider varying environmental factors, namely temperature, precipitation and atmospheric CO2 concentrations. Our results show that all of these variables play a significant role in supporting the forest biomes and a continuous forest belt could have occurred under certain combinations of these settings. With our current knowledge of the palaeoenvironmental history of East Africa, it is likely that the region hosted these conditions during the Late Cenozoic. Recent improvements on environmental hypotheses of hominin evolution highlight the role of periods of short and extreme climate variability during the Late Cenozoic specific to East Africa in driving evolution. Our results elucidate how the forest biomes of East Africa can appear and disappear under fluctuating environmental conditions and demonstrate how this climate variability might be recognized on the biosphere level. © 2016 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67997
Appears in Collections:过去全球变化的重建

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作者单位: Department of Plant Ecology and Nature Conservation, Institute of Biochemistry and Biology, University of Potsdam, Maulbeerallee 2, Potsdam, Germany; DFG Graduate School Shaping the Earth's Surface in a Variable Environment, University of Potsdam, Karl-Liebknecht-Str. 24, Potsdam, Germany; Department of Earth and Environment, Boston University, 675 Commonwealth AvenueMA, United States; Biodiversity and Ecological Modelling, Institute of Biology, Freie Universität Berlin, Altensteinstr. 6, Berlin, Germany; Berlin-Brandenburg, Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany; ZALF, Leibniz-Centre for Agricultural Landscape Research, Eberswalder Str. 84, Müncheberg, Germany; Institute for Earth and Environmental Science, University of Potsdam, Karl-Liebknecht-Str. 24, Potsdam, Germany

Recommended Citation:
Fer I.,Tietjen B.,Jeltsch F.,et al. Modelling vegetation change during Late Cenozoic uplift of the East African plateaus[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,467
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