Seasonal Dynamics of Carbon-Containing Compounds under Different Effects of Natural and Anthropogenic Factors

• Published in: IOP conference series. Earth and environmental science 2021-09, Vol.852 (1), p.12068
• Main Authors: Mazirov, M A, Matyuk, N S, Savoskina, O A, Polin, V D
• Format: Article
• Language: English
• Subjects: Absorption; Anthropogenic factors; Carbon; Carbon compounds; Carbon cycle; Carbon dioxide; Carbon dioxide emissions; Dioxins; Methane; Organic carbon; Organic matter; Seasonal variations; Soil dynamics; Soil fertility; Soil layers; Soil management; Soil moisture; Soil temperature
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/852/1/012068

It was found that the processes of exchange of carbon compounds between the soil and the atmosphere are characterized by high variation in different periods of the annual cycle. It has been proved that CO 2 emission, as well as the release and absorption of methane from the soil, is the main expenditure item in the balance of organic matter, which significantly affects the fertility and the level of productivity of agrobiocenoses. Soil fertility management and carbon gas cycle processes largely overlap. With an increase in the content of organic carbon from 0.55 to 0.98%, the loss of carbon dioxin and the absorption of methane compounds increase 1.5–4.3 times. A weak correlation was established between the release of carbon dioxin and the degree of soil cultivation (Kendall coefficient r = 0.23 at p = 0.05), seasonal dynamics of soil moisture r = 0,23 at p = 0,05) and a strong one (r = 0,87 at p = 0.000,2) with methane release / uptake dynamics. The same relationship was found between the dynamics of carbon dioxide release and the temperature of the soil layer 0–5 (Pearson’s coefficient r = 0.82–0.84 at p = 0.003–0.04), and 0-20 cm (r = 0.68–0.71 at p = 0.003–0.006).