Experimental and Model Estimates of Respiration of the Forest Sod-Podzolic Soil in the Prioksko-Terrasny Nature Reserve

Kurganova, I.N.; Lopes de Gerenyu, V.O.; Myakshina, T.N.; Sapronov, D.V.; Romashkin, I.V.; Zhmurin, V.A.; Kudeyarov, V.N.

Авторы: Kurganova I.N., Lopes de Gerenyu V.O., Myakshina T.N., Sapronov D.V., Romashkin I.V., Zhmurin V.A., Kudeyarov V.N.
Журнал: Contemporary Problems of Ecology
Том: 13
Номер: 7
Год издания: 2020
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 813
Последняя страница: 824
Аннотация: Modeling the carbon cycle in forests is often restricted by modeling the main components, includingemissions (respiration of soils and debris) and production (deposition of carbon in plants and soils). In this studywe examine the applicability of various versions of the T&P model to estimate monthly, seasonal, and annualfluxes of CO2 from the sod-podzolic soil in the mixed forest of the Prioksko-Terrasny Nature Reserve, Moscowoblast. The model is parameterized and verified, and the accuracy is tested using a database of 20 years of monitoringCO2 emissions from soils and independent weather variables, including mean monthly air temperatureand monthly precipitation. Numeric experiments show that all versions of the T&P model (both initial andparameterized by training sets at different temporal intervals) satisfactorily describe the long-term dynamics ofmean monthly respiration of the sod-podzolic soil under forest cover (SRm). Parameterization of theT&P model with experimental data as a training set practically does not improve the quality of modeling in anyof the test intervals. The use of weather data averaged over 20 years for the calculation of SRmod-mean and estimatesof seasonal and annual soil fluxes of CO2 on their basis (SeSRmod-mean) in most cases overestimates thecorresponding experimentally obtained values (SeSRexp). SeSRmod-mean for annual, summer, and winter soilCO2 fluxes are on average 4.5–6.7% higher than SeSRexp, and SeSRmod-mean for the warm season shows anoverestimation of approximately 3%. The largest discrepancy of calculated estimates to experimental data isfound for the spring period: the overestimation amounts to ~22%. Thus, the use of weather data averaged over20 years has shown the applicability of an ensemble of versions of the T&P model for estimating seasonal andannual fluxes of CO2 from soil in a humid continental climate.
Добавил в систему: Курганова Ирина Николаевна

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Experimental and Model Estimates of Respiration of the Forest Sod-Podzolic Soil in the Prioksko-Terrasny Nature Reserveстатья

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