Organic carbon sequestration and nitrogen content in forest soils versus arable soils within a heavy-clay Phaeozem landscape: a Romanian case study

This paper tests the hypothesis that the soil organic carbon (OC), total nitrogen (Nt), nitrate-N and ammonium-N in forests are significantly different from the same properties in arable soils, under similar relief, geology, climate and heavy-clay soil conditions (phaeozioms). Such soils are largely...

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Published in:Archiv für Acker- und Pflanzenbau und Bodenkunde 2020-12, Vol.66 (14), p.2026-2038
Main Authors: Cristian, Paltineanu, Radu, Lacatusu, Andrei, Vrinceanu, Rovena, Lacatusu Anca
Format: Article
Language:English
Subjects:
Afforestation
Ammonium
ammonium nitrogen
Arable land
Argic-Chernic Phaeozems
Carbon
Carbon sequestration
Carbon sinks
Clay
Clay soils
Correlation analysis
Depth profiling
Environmental conditions
Forest soils
Forests
Geology
Land use
nitrate-nitrogen
Nitrogen
Organic carbon
organic carbon stock
Organic soils
Soil conditions
Soil layers
Soil profiles
Soil properties
Topsoil
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Summary:This paper tests the hypothesis that the soil organic carbon (OC), total nitrogen (Nt), nitrate-N and ammonium-N in forests are significantly different from the same properties in arable soils, under similar relief, geology, climate and heavy-clay soil conditions (phaeozioms). Such soils are largely spread in the world. Four pairs of soil profiles 1.5 m deep were carried out in both forest soils and arable soils. The different environmental conditions produced modifications in OC, Nt and other related properties. OC content and Nt content for the first 0.5 m depth soil strata are distinctly significantly higher in forest soils versus arable soils. Soil NO 3 -N and NH 4 -N contents present non-significant differences for the same depths in the two land uses. OC, Nt and NH 4 -N contents are directly and highly significantly correlated for all soil layers. Measurements of OC and N from topsoil are not sufficient for a thorough evaluation of the environment. Afforestation is a measure to increase soil carbon sinks. The findings might be extrapolated to countries with similar environment.
ISSN:0365-0340
1476-3567
DOI:10.1080/03650340.2019.1706170