The aim of this paper is an estimation of the CO2 sequestration by Rus
sian forests, caused by previous and future climate changes. The metho
d of estimation is simulation of carbon budget via mathematical model.
This model has a number of specific features: description of age dist
ribution of forests, number of carbon reservoirs, modeling of cuttings
and fires. Current net-sink of CO2 is estimated as 160 MtC/yr. This s
ink will grow up to 200-240 Mt/yr in 2010. Main uncertainty of results
are caused by variation in parameters of forest reaction to climate c
hanges.