globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.10.028
论文题名:
Fire dynamics under monsoonal climate in Yunnan, SW China: past, present and future
作者: Li S.; Hughes A.C.; Su T.; Anberrée J.L.; Oskolski A.A.; Sun M.; Ferguson D.K.; Zhou Z.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 465
起始页码: 168
结束页码: 176
语种: 英语
英文关键词: Charcoal ; Climate ; Miocene ; Southwestern China ; Temperature ; Wildfire
英文摘要: Climate change is likely to alter wildfire regimes, but the significance of climate-driven factors in regional fire regimes over extended temporal scales is poorly understood. Comparison of the reconstructed fire dynamics from charcoals in sediments with modern active fires may provide clues about the drivers of wildfire activities, and help us validate models of fire activity for both the past and the future. Microscopic charcoals from Miocene sediments in Wenshan Basin (Yunnan, southwestern China), were used to reconstruct fire dynamics in deep time. Palaeoclimatic data were obtained from the previous quantitative reconstruction using pollen samples from a sedimentary sequence. The relationship between palaeoclimatic parameters and the ratio of charcoals during the Miocene was explored, and compared with maximum entropy (Maxent) model results throughout different time periods. Our results indicate that the temperature in the dry season was the main factor controlling the frequency of fire in Wenshan during the Miocene. Maxent modeling results based on the modern active fire dataset of Yunnan Province from NASA Earth observations are consistent with the results from fossil sediment analysis, that dry season temperature is the main driver of fire activity. Our findings suggest a significant fire-temperature relationship under the monsoonal climate since the Neogene. Furthermore, models suggest that the last-glacial maximum (LGM) had lower levels of fire activity than present, which increased during the Holocene prior to reaching present levels. Models also predict increases in fire activity across most of Yunnan in the future. © 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/68064
Appears in Collections:过去全球变化的重建

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作者单位: Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of SciencesYunnan, China; Key Laboratory of Biogeography and Biodiversity, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China; State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing, China; Centre for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of SciencesYunnan, China; Department of Botany and Plant Biotechnology, University of Johannesburg, PO Box 524, Auckland Park 2006, Johannesburg, South Africa; Komarov Botanical Institute, Prof. Popov Str. 2St. Petersburg, Russian Federation; National Plateau Wetlands Research Center, Southwest Forestry University, Kunming, China; Department of Paleontology, University of Vienna, Althanstrasse 14, Vienna, Austria

Recommended Citation:
Li S.,Hughes A.C.,Su T.,et al. Fire dynamics under monsoonal climate in Yunnan, SW China: past, present and future[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,465
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