Pools and carbon fluxes in felling ecosystems spruce forests of the middle taiga of the Komi Republic
The quantitative characteristics of the reserves and distribution of carbon of organic matter in the soil-phytocenosis system after clearing the stand of two types of spruce forests on peaty-podzolic-gleyed soils are shown. It is established that in the ecosystems of 4-6 years old felling of spruce forests 115-121 thousand kgC/ha are accumulated, most of which is concentrated in the soil. The production-destructive processes of organic matter in the phytocenosis-soil system are estimated. It is shown that on the cutting of spruce forests the carbon costs of the atmosphere for phytomass production (1.8-2.2 thousand kg/ha) prevail over its return with fall (1.4-1.7 thousand kg/ha). In the annual biological carbon cycle, felling of spruce forests is dominated by the plants of the ground cover. In the carbon cycle of cutting down, large-scale wood debris (deadwood, brushwood, felling remains, roots of cut trees) is of great importance, in the mass of which 22.0-27.6 thousand kgC/ha are concentrated, and forest litter accumulating 18.6-27.8 thousand kgC/ha.