Aspects of the carbon cycle in terrestrial ecosystems of Northeastern Småland

摘要: Boreal and temperate ecosystems of the northern hemisphere are important for future development global climate. In this study, carbon cycle has been studied in a pine forest, meadow, spruce forest two deciduous forests Simpevarp investigation area southern Sweden (57°5’N, 34°55’E). Ground respiration ground Gross Primary Production (GPP) measured three times during spring 2004 with closed chamber technique. Soil temperature, soil moisture Photosynthetically Active Radiation (PAR) were also measured. An exponential regression against temperature was used to extrapolate over 2004. A logarithmic GPP PAR meadow is affected by all but pine, still it only explains small part variation indicates that other abiotic factors have an influence. affects one ecosystems. comparison between extrapolated indicated could be respiration. main factor influencing not since too few measurements done they from different periods spring. did any significant effect on GPP. Dynamic Global Vegetation Model, DGVM called LPJ-GUESS, downscaled area. The evaluated organic acids five Net Production, NPP. For ecosystems, tree layer pools. evaluation reasonably well predictions respiration, pool fast decomposing pool, 2001–2100. NPP predicted meadow. Two climate scenarios used. pools increased both scenarios,