Science in China Series D: Earth Sciences

, 51:1081

Quantitative study on pollen-based reconstructions of vegetation history from central Canada

Article

DOI: 10.1007/s11430-008-0086-4

Cite this article as:
Yu, G., Hart, C., Vetter, M. et al. Sci. China Ser. D-Earth Sci. (2008) 51: 1081. doi:10.1007/s11430-008-0086-4

Abstract

Based on high-resolution pollen records from lake cores in central Canada, the present study instructed pollen taxa assignations in ecosystem groups and modern analogue technique, reported major results of quantitative reconstructions of vegetation history during the last 1000 years, and discussed the validation of simulated vegetation. The results showed that in central America (115°–95°W, 40°–60°N), best analogue of the modern vegetation is 81% for boreal forest, 72% for parkland, and 94% for grassland-parkland, which are consistent with vegetation distributions of the North American Ecosystem II. Simulations of the past vegetation from the sedimentary pollen showed climate changes during the past 1000 years: it was warm and dry in the Medieval Warm period, cold and wet in the earlier period and cold and dry in the later period of the Little Ice Age. It became obviously increasing warm and drought in the 20th century. The present studies would provide us scientific basis to understand vegetation and climate changes during the last 1000 years in a characteristic region and in 10–100 year time scales.

Keywords

sedimentary pollensurface pollenmodern analogue techniqueecosystempaleovegetationpast 1000 years

Copyright information

© Science in China Press and Springer-Verlag GmbH 2008

Authors and Affiliations

  • Ge Yu
    • 1
    • 2
  • Catherina Hart
    • 3
  • Mary Vetter
    • 3
  • David Sauchyn
    • 2
    • 4
  1. 1.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjingChina
  2. 2.Prairie Adaptation Research CollaborativePrairieCanada
  3. 3.Department of BiologyUniversity of ReginaReginaCanada
  4. 4.Department of GeographyUniversity of ReginaReginaCanada