Abstract
The study explores relationships between the peat decomposition rate and moisture-temperature conditions. Decomposition was evaluated through studying microbial production of CO2 and CH4. Decomposition of the original peat substrate (peat) was compared to one of the peat-sand mixture from 5 year old urban lawn (mixture). In the research the CO2 and CH4 emissions were studied under following temperatures and moisture conditions: temperature – 5 °C, 10 °C, 15 °C и 40 °C and moisture – 30%, 60%, 120%, 300%. The obtained results showed significant correlations between moisture and temperature conditions and CO2 and CH4 emissions. Differences of moisture and temperature impacts on the soil organic carbon (SOC) decomposition in the peat and peat-sand mixtures were observed as well. The CO2 emissions from the peat-sand mixture were higher compared to the peat, whereas SOC content in both substrates was similar.
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Acknowledgements
The laboratory analysis and experiments were financially supported by the Russian Science Foundation, project No. 17-77-20046. The field experiment was carried out and the paper was prepared with the financial support of the “RUDN University Program 5-100”.
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Brianskaia, I.P., Vasenev, V.I., Hajiaghayeva, R.A., Morev, D.V. (2019). Evaluation of Peat Stability Under Various Temperature and Moisture Conditions. In: Vasenev, V., Dovletyarova, E., Cheng, Z., Prokof’eva, T., Morel, J., Ananyeva, N. (eds) Urbanization: Challenge and Opportunity for Soil Functions and Ecosystem Services. SUITMA 2017. Springer Geography. Springer, Cham. https://doi.org/10.1007/978-3-319-89602-1_19
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DOI: https://doi.org/10.1007/978-3-319-89602-1_19
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