late holocene environmental reconstructions and their implications on flood events, typhoon, and agricultural activities in ne taiwan

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2014
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Abstract
We reconstructed paleoenvironmental changes from a sediment archive of a lake in the floodplain of the Ilan Plain of NE Taiwan on multi-decadal resolution for the last ca. 1900 years. On the basis of pollen and diatom records, we evaluated past floods, typhoons, and agricultural activities in this area which are sensitive to the hydrological conditions in the western Pacific. Considering the high sedimentation rates with low microfossil preservations in our sedimentary record, multiple flood events were. identified during the period AD 100–1400. During the Little Ice Age phase 1 (LIA 1 – AD 1400–1620), the abundant occurrences of wetland plant (Cyperaceae) and diatom frustules imply less flood events under stable climate conditions in this period. Between AD 500 and 700 and the Little Ice Age phase 2 (LIA 2 – AD 1630–1850), the frequent typhoons were inferred by coarse sediments and planktonic diatoms, which represented more dynamical climate conditions than in the LIA 1. By comparing our results with the reconstructed changes in tropical hydrological conditions, we suggested that the local hydrology in NE Taiwan is strongly influenced by typhoon-triggered heavy rainfalls, which could be influenced by the variation of global temperature, the expansion of the Pacific warm pool, and the intensification of El Niño–Southern Oscillation (ENSO) events.
Reference Key
wang2014climatelate Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;L.-C. Wang;H. Behling;T.-Q. Lee;H.-C. Li;C.-A. Huh;L.-J. Shiau;Y.-P. Chang
Journal proceedings - 16th ieee/acis international conference on computer and information science, icis 2017
Year 2014
DOI
10.5194/cp-10-1857-2014
URL
http://www.clim-past.net/10/1857/2014/cp-10-1857-2014.pdf
Keywords
environmental pollutionenvironmental protectionenvironmental sciences

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