https://scholars.lib.ntu.edu.tw/handle/123456789/137563
Title: | Climate changes inferred from integrated multi-site pollen data in northern Taiwan | Authors: | Wang, Liang-Chi Wu, Jiunn-Tzong Lee, Teh-Quei Lee, Pei-Fen Chen, Su-Hwa |
Keywords: | Climate change; GIS mapping; Multi-site pollen analysis; Taiwan | Issue Date: | 2011 | Start page/Pages: | 1164-1170 | Source: | Journal of Asian Earth Sciences | Abstract: | In this study, we synthesized the fossil pollen data from 10 lake sediments and 2 land cores to integrate the alteration of forest covered areas in northern Taiwan with changes in humidity and temperature over the last 2000 years. The abundance of arboreal pollen, fern spores and Tsuga pollen in the pollen and spore assemblages were used as indicators. Our results suggested that the climate in northern Taiwan was stably cool and dry during 2000-1000. cal. yr BP, but changed to wet and warm during 1000-500. cal. yr BP, which corresponded to the Medieval Warm Period (MWP). In addition, an increased density and dispersal of Tsuga pollen corresponding to 500-200. cal. yr BP was observed, which corresponded to the Little Ice Age (LIA). In recent years, a decline in Tsuga pollen density and increased fern spore density has been observed, which indicates an increase in temperature associated with elevated rainfall. Based on the synthesized data set, we conducted GIS mapping of such changes in the north of Taiwan over time. The results revealed that the temporal and spatial climate changes could be inferred from the palynological GIS mapping method, and that the fluctuations in temperature over time matched well with the global climate events, including MWP, LIA and recent warming. © 2010 Elsevier Ltd. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/242965 | DOI: | 10.1016/j.jseaes.2010.06.003 | SDG/Keyword: | GIS; global climate; global warming; Little Ice Age; mapping method; Medieval Warm Period; paleoclimate; palynology; relative humidity; spatial data; temperature gradient; Taiwan; Filicophyta; Tsuga |
Appears in Collections: | 生命科學系 |
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