Trend for Soil CO 2 Efflux in Grassland and Forest Land in Relation with Meteorological Conditions and Root Parameters

Mykola Kochiieru, Agnė Veršulienė, Virginijus Feiza () and Dalia Feizienė
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Mykola Kochiieru: Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Kedainiai District, 58344 Akademija, Lithuania
Agnė Veršulienė: Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Kedainiai District, 58344 Akademija, Lithuania
Virginijus Feiza: Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Kedainiai District, 58344 Akademija, Lithuania
Dalia Feizienė: Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Kedainiai District, 58344 Akademija, Lithuania

Sustainability, 2023, vol. 15, issue 9, 1-14

Abstract: The key process in understanding carbon dynamics under different ecosystems is quantifying soil CO 2 efflux. However, this process can change annually as it depends on environmental variables. The results of this paper present the effects of root network, soil temperature, and volumetric water content on soil CO 2 efflux, which were investigated on Retisol of two types of land uses in Western Lithuania in 2017–2019: forest and grassland. It was determined that the average soil CO 2 efflux in the grassland was 32% higher than in the forest land. The CO 2 efflux, average across land uses, tended to increase in the following order: 2017 < 2018 < 2019. Dry weather conditions with high temperatures during the vegetation period governed the soil CO 2 efflux increase by 14%. Soil temperature (up to 20 °C) and volumetric water content (up to 23–25%) had a positive effect on the soil CO 2 efflux increase on Retisol . We established that the root’s activity plays one of the main roles in the CO 2 production rate—in both land uses, the soil CO 2 efflux was influenced by the root length density and the root volume.

Keywords: Retisol; CO 2 efflux; root volume; soil temperature; volumetric water content (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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