CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS
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CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS |
RUSSIAN ACADEMY OF SCIENCES |
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Tsel’niker Yu.L., Korzukhin M.D., Semenov S.M. Model Analysis of Latitudinal Distribution of Forest Species in Russia // Forest Science (Lesovedenie). 2010. No 2. P. 36-45 (in Russian). The model combined Farquhar ecophysiological model and the model of stomatal conductance, as well as models of tree and forest canopy were used for the calculation of the net and gross production (NPP and GPP) in four woody species (species of birch, larch, Norway spruce, and Siberian pine) from 223 points of Russia, countries of CIS and Baltic based on the climatic data from meteorological stations. Photosynthesis was dependent on five environmental factors: PhAR, air and soil temperatures, deficiency of water - vapor pressure, and soil moisture. For all four species, the maximal productivity (at real weather) is observed at latitudes of 56-60 °N corresponding to the southern taiga subzone. The correlation analysis revealed that in the south, the species productivity was most closely related to the precipitation ratio. In the north, it is related to PhAR and temperature to a greater extent. The NPP to GPP (CUE) ratio at latitudes of 58-75 °N is constant, and it is reduced as the precipitation ratio decreases. An advantage of the model approach is the possibility to analyze physiological processes responsible for the differences in the productivity of species under different climatic conditions. Birch, larch, spruce, pine, ecophysiological model, productivity, geographical distribution. |
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