География чистой первичной продукции древостоев рода Larix в пределах Евразии

The results of analysis of the structure of annual clean original products (COP) of larch in different nature zones of Eurasia are submitted. The studies were conducted in the Turgai caving in the clean 40-41 years old forest plantation of Siberian larch (Larix sibirica Ldb.) growing on the territory of Borovsky forest enterprise, Kostanai region (Northern Kazakhstan, 53° northern latitude, 64° eastern longitude) under the conditions of arid steppe. To carry out the geographic analysis of the phytomass and the annual products the materials of the V.A. Usoltsev data base, including 100 experimental plots and 6 test plots in Yakutia, with Gmelin larches from 10 to 174 years of age laid down by Japanese scientists, were used. It has been established that the larch plantations have significant differences in both the clean original products (COP) and the phytomass as well, this being determined, to a considerable extent, by specific climatic conditions. The larch COP, as well as that of all the above-ground and needle trees, is increasing in the direction from the subarctic zonal belt to the subtropical one. Within the limits of one zonal belt the above-ground COP is decreasing in the direction from the Atlantic and Pacific oceans’ coastlines to the continental pole in Yakutia and as to the COP of needle trees, towards the same direction, it is being increased. Thus the productivity of needles functioning, as the ratio of the above-ground COP to the products of needle trees, is being increased with the tightening of the growing conditions and it reaches the highest values in the region of long-term frozen land.