ISSN:
1573-5036
Keywords:
boreal forests
;
increased CO2
;
increased temperature
;
open top chamber
;
soil respiration
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00029369
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