THE RESERVES AND FORMS OF CARBON-COMPOUNDS IN BOG ECOSYSTEMS OF RUSSIA

The reserves of carbon in peat deposits and peaty and peat bog soils o f Russia comprise 44.2 Gt C of humic substances (37.3% of the total re serve of C), 44.7 Gt C (37.8%) of insoluble residue, and 21.1 Gt C (17 .8%) of polysaccharides, The carbon pool of humic acids constitutes 25 .0 Gt and that of fulvic acids reaches 19.1 Gt. Humic acids predominat e in low-moor peat, whereas fulvic acids predominate in high-moor peat . Transitional pear deposits contain approximately equal amounts of fu lvic and humic acids. About 89-91% of the carbon of humic substances i n different types of peat is represented by heterogeneous complexes of the first and third fractions.