Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67, 1131-1137

https://doi.org/10.11118/actaun201967051131
Published online 2019-10-31

Assessment of Retention Potential and Soil Organic Carbon Density of Agriculturally used Chernozems, Cambisols and Fluvisols

Martin Brtnický1,2, Václav Pecina2, Tereza Dokulilová2, Jan Vopravil3, Tomáš Khel3, Jan Zloch2, Vítězslav Vlček1

1Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
2Department of Geology and Pedology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
3Research Institute for Soil and Water Conservation, Žabovřeská 250, 156 27 Praha, Czech Republic

Received July 25, 2019
Accepted September 4, 2019

Climate change and the increasing frequency of climatic extremes have led to growing concerns over the sustainability of agriculture during recent years. In this context, soil retention and carbon storage are becoming widely discussed. The aim of this study was to evaluate the retention potential (RP) and soil organic carbon density (SOCD) of Chernozem, Cambisol and Fluvisol topsoil under agricultural management. Despite the different natural assumptions of these soil types, no significant statistical difference was found there. Mean RP values of the soil types varied from 39 to 40 mm and mean SOCD values from 23 to 28 t/ha. This finding may suggest that long-term agricultural management can suppress the naturally diverse potential for water retention and carbon storage of the individual soil types. Comparison of SOCD of the studied soils with agricultural soils in similar studies showed that most of the observed values can be considered as average. Despite this fact, a very strong local degradation has been revealed indicating poor agricultural management. Especially in such cases, there is an urgent need to adjust the management of the agricultural land fund (e.g. increased application of organic fertilizers, change in crop rotation) in order to increase carbon stocks and to improve the water retention capacity of soils.

Funding

This research was supported by National Agency for Agricultural Research by project QK1720303 – Retention capacity of the soil and landscape and possibilities of increasing in terms of climate change (70%), by project QK1920280 Innovation of the Evaluated Soil-Ecological Units (BPEJ) for state administration needs (20%) and by project QK 1810233- Quantification of the impact of farming management on soil erosion, soil quality and yields of crops with proposals of the environmentally friendly cultivation technologies (10%).

References

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