Phyto mass accumulation and the carbon potential of modal fir stands determination in the conditions of the Krasnoyarsk-Kansk podtaezhno-forest-steppe region

The research paper presents two stages of the study. At the first stage, table sketches of the growth progress of modal fir plantations for the mixed and green-moss type forests of the Kansk forest district and the mixed and fern-mossy groups of the Biryusinsk precinct of the Minino forest district were developed. At the second stage, using the conversion method, the conversion coefficients of the fractions of branches, needles and roots were calculated and the age-related dynamics of the phytomass of modal fir plantations of various typological-territorial groups, with its division into fractions, was determined, and the carbon stock was calculated. As a result of the studies, it was found that a high level of phytomass accumulation and carbon reserve are characterized by fir plantations of the fern-moss type of the forest of the Krasnoyarsk subtaiga region. The total phytomass of the trees of the age being up to 150 years was 205.7 t · m-3, and the carbon stock was 102.8 t / ha. The lowest indices for the mixed grass firs of the Kansk forest-steppe were established; according to the data obtained, the total plant phytomass was 123.9 t / ha by 160 and carbon 62 t / ha.