Paludification on Vasyugan Mire

Abstract

Results of long-term estimates of carbon stock and current carbon sequestration in pine–shrub–sphagnum BGC in Vasyugan Mire (VM) are discussed. In different climatic conditions (different years), NРP varies from 206 to 337 g Cm^–2 year^–1. An increase in carbon-emission intensity was detected in drier vegetation periods. Most of the carbon losses are the emission of carbon dioxide (average is 61.3 g Cm^–2 years^–1, or 23.5% NPP). It is possible to ascertain the progression of peat formation. The removal of the carbon by bog waters was calculated using a mathematical model. It was estimated as 3.0% NРР with a mean value of the removal of 7.9 g Cm^–2 years^–1. Based on the model of bogs vertical growth, the modern rate of carbon accumulation was estimated in the range from 10.3 g Cm^–2 years^–1 in polygonal bogs to 51.7 g Cm^–2 years^–1 in grassy bogs.