Abstract
Fluxes of carbon dioxide from arable gray forest soils (clay Humic Luvisol) were studied under field conditions during 36 months. The mean daily CO2 evolution rates varied — from 0.9 to 246 mg C·m −2·hour −1. The annual flux of CO2 from arable gray forest soils averaged 4.2 t C·ha−1. Contribution of cold period (November — April) ranged from 12 to 16% of average annual flux. The exponential Q10 function over whole the period of investigations and over the different classes of soil temperature (Ts) and moisture (Ms) were calculated. Q10 value for all the data obtained was equal to 2.64 (n=104) and increased from approx. 0.8 at Ms<10% to approx. 5.4 at Ms > 30%. Significant differences of Q10 function were observed between different classes of Ts. The highest Q10 values were 13.3 at Ts = 5–10°C (Ms = 20–30%) and 8.8 at Ts = 0–5°C (Ms > 30%).
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© 2003 Springer Science+Business Media Dordrecht
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De Gerenyu, V.O.L., Kurganova, I.N., Sapronov, D.V. (2003). Carbon Dioxide Fluxes from Arable Soils as Affected by Temperature and Moisture. In: García-Torres, L., Benites, J., Martínez-Vilela, A., Holgado-Cabrera, A. (eds) Conservation Agriculture. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1143-2_42
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DOI: https://doi.org/10.1007/978-94-017-1143-2_42
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