Ecosystems

, Volume 1, Issue 4, pp 345–351

Impacts of Elevated Carbon Dioxide and Temperature on a Boreal Forest Ecosystem (CLIMEX Project)

  • Nico  van Breemen
  • Alan  Jenkins
  • Richard F.  Wright
  • David J.  Beerling
  • Wim J.  Arp
  • Frank  Berendse
  • Claus  Beier
  • Rob  Collins
  • Douwe  van Dam
  • Lennart  Rasmussen
  • Paul S. J.  Verburg
  • Mark A.  Wills

ABSTRACT

To evaluate the effects of climate change on boreal forest ecosystems, both atmospheric CO2 (to 560 ppmv) and air temperature (by 3°–5°C above ambient) were increased at a forested headwater catchment in southern Norway. The entire catchment (860 m2) is enclosed within a transparent greenhouse, and the upper 20% of the catchment area is partitioned such that it receives no climate treatment and serves as an untreated control. Both the control and treatment areas inside the greenhouse receive deacidified rain. Within 3 years, soil nitrogen (N) mineralization has increased and the growing season has been prolonged relative to the control area. This has helped to sustain an increase in plant growth relative to the control and has also promoted increased N export in stream water. Photosynthetic capacity and carbon–nitrogen ratio of new leaves of most plant species did not change. While the ecosystem now loses N, the long-term fate of soil N is a key uncertainty in predicting the future response of boreal ecosystems to climate change.

Key words: climate change; boreal forest; greenhouse; catchment; vegetation; soil; water; temperature; carbon dioxide. 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag New York Inc. 1998

Authors and Affiliations

  • Nico  van Breemen
    • 1
  • Alan  Jenkins
    • 2
  • Richard F.  Wright
    • 3
  • David J.  Beerling
    • 4
  • Wim J.  Arp
    • 5
  • Frank  Berendse
    • 5
  • Claus  Beier
    • 6
  • Rob  Collins
    • 2
  • Douwe  van Dam
    • 1
  • Lennart  Rasmussen
    • 6
  • Paul S. J.  Verburg
    • 1
  • Mark A.  Wills
    • 2
  1. 1.Department of Environmental Sciences, Section of Soil Science and Geology, Wageningen Agricultural University, PO Box 37, 6700 AA Wageningen, The Netherlands NL
  2. 2.Institute of Hydrology, Wallingford, Oxon OX10 8BB, United Kingdom UK
  3. 3.Norwegian Institute for Water Research, PO Box 173 Kjelsås, 0411 Oslo, Norway NO
  4. 4.Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, United Kingdom UK
  5. 5.Department of Environmental Sciences, Section Terrestrial Ecology and Nature Conservation, Wageningen Agricultural University, PO Box 14, 6700 AA Wageningen, The Netherlands NL
  6. 6.Department of Plant Biology and Biogeochemistry, Risø National Laboratory, PO Box 49, 4000 Roskilde, Denmark DK

Personalised recommendations