... Goals and Tasks . ... In the field of biogeocenology the main attention was paid to the study of the spatial structure of forest biogeocenoses, spatial and temporal variability of the energy, water and carbon dioxide fluxes in different types of ecosystems of the boreal forest zone, stability of forest ecosystems and prediction of their possible future changes. ... The total amount of carbon stored in the Earth soils was estimated as about 1.35 10 12 C tons. ...