Soil respiration in a poor upland site of Scots pine stand subjected to elevated temperatures and atmospheric carbon concentration
- Brita Pajari
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Soil respiration rates under elevated temperature and atmospheric CO2 concentrations were studied in eastern Finland (62° 47′N, 30° 58′E, 144 m.a.s.1.) around naturally regenerated 20 – 30 years old Scots pine trees, enclosed in open top chambers. The production of CO2 varied spatially and temporally, but clearly followed the changes in temperature measured at the soil surface. However, soil respiration in the open control was higher than that in chambers; i.e. the chamber itself changed the conditions by increasing the temperature, altering the movement of water, and thereby soil moisture. Nevertheless, an elevation in the concentration of atmospheric CO2 raised soil respiration and brought it nearer to the level in the open control. An increase in temperature seemed to inhibit this rise, possibly because of an imbalance between temperature and moisture.
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- Soil respiration in a poor upland site of Scots pine stand subjected to elevated temperatures and atmospheric carbon concentration
Plant and Soil
Volume 168-169, Issue 1 , pp 563-570
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- Kluwer Academic Publishers
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- boreal forests
- increased CO2
- increased temperature
- open top chamber
- soil respiration
- Industry Sectors
- Brita Pajari (1)
- Author Affiliations
- 1. Faculty of Forestry, University of Joensuu, PO Box 111, 80101, Joensuu, Finland