Lateral extension in Sphagnum mires along the southern margin of the boreal region, Western Siberia

A. Peregon, M. Uchida, Y. Yamagata

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Although recent studies have recognized Northern Eurasian ecosystems as an important carbon reservoir, little is known about the forest-peatland interactions in a boreal environment induced by ongoing climatic changes. This study focuses on the evaluation of both the long-term and contemporary trends of land-cover changes and rates of lateral extension of peat-accumulating wetlands toward the adjacent forests, estimated at the southern climatic range of the Sphagnum-dominated mires in Western Siberia. We used the radiocarbon dates and stratigraphy of peat sediments from seven peat cores, analyzed at two types of forest-peatland ecotones, which are located close to each other but differ by topography and composition of their plant communities. The rate of lateral extension was found in a wide range varying from 2.3 to 791.7cmyr-1. It was observed to be rapid during the initial stage of mire development, but to have slowed down over the last 2000-3000yr. Our results, therefore, strongly contradict the concept of progressive peat accumulation throughout the late Holocene and contribute to our knowledge about ongoing land-cover change in the natural ecosystems of the Northern hemisphere.

Original languageEnglish
Article number045028
JournalEnvironmental Research Letters
Volume4
Issue number4
DOIs
Publication statusPublished - 2009
Externally publishedYes

Keywords

  • Forestpeatland ecotone
  • Lateral extension
  • Sphagnum mires
  • Western Siberia

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Environmental Science(all)
  • Public Health, Environmental and Occupational Health

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