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Journal of Plant Research

, Volume 107, Issue 1, pp 91–97 | Cite as

Effects of global climatic warming on the boreal forest

  • Satoru Kojima
JPR Symposium

Abstract

On the basis of the predictions of the global climatic warming induced by anthropogenic activities, as provided by climatologists, current state of knowledge regarding possible ecological consequences of the warming on the boreal biome was discussed. A 600 to 700 km northward advance of the biome along with the warming was predicted. Such a shift could take place for half a century or so, which would be an unprecedentedly fast rate of progression. This might cause a serious disorder in species composition of the biome, particularly in the boundary regions. As to the carbon sink or source issues, considerable uncertainties and knowledge gaps existed. Elevated temperature and CO2 levels would stimulate photosynthesis to result in an increase of CO2 uptake, while the temperature increase would promote decomposition of organic matter especially that stored in the soils to release CO2 to the atmosphere. Behaviors of northern peat bogs, whereca. 700 Gt of organic matter was thought to be accumulated, would seriously affect the balance. However, overall ecosystematic carbon balance was yet to be fully studied. It was realized that multifunctional approaches needed to be developed so as to integrate pieces of various information into a holistic picture. Need for international collaboration research efforts was also addressed.

Key words

Biome shift Boreal forest Carbon balance Effects of climatic warming 

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Copyright information

© The Botanical Society of Japan 1994

Authors and Affiliations

  • Satoru Kojima
    • 1
  1. 1.Department of Biosphere Science, Faculty of ScienceToyama UniversityToyamaJapan

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