20.500.12556/DiRROS-16454 Soil organic carbon stock capacity in karst dolines under different land uses The soil organic carbon (SOC) was determined in soils of enclosed karst depressions (dolines) (NW Dinaric Mts.) to define their potential for organic carbon sequestration. SOC was measured in the forest, succession (scrubland), and grassland plots at the bottom of dolines at four depths (0–40 cm) and for 40 cm soil layer SOC stock was calculated. We demonstrated that the prevailing fine soil fractions, the C/N ratio and soil thickness play a positive role in the storage capacity of SOC in dolines regardless land use type. Grasslands have the lowest SOC storage capacity (106 t/ha/40 cm), while the highest SOC storage capacity is in succession plots (130 t/ha/40 cm). The last are covered by shrub communities dominated by Prunus spinosa, forming dense communities, and are typical of abandoned croplands or meadows that have been impacted by high levels of nutrients during cultivation phase. At this stage, there is no additional nutrient input in studied plots, which lowers the nutrient content and increases the C/N ratio. C/N ratio is the highest in the forest, where SOC stock capacity is 116 t/ha/40 cm. Given the trend towards the abandonment of agricultural land at Kras Plateau (SW Slovenia), we can expect more overgrowth of dolines, and thus an increase in carbon stocks and stabilization of organic carbon in forest soils. In contrary, we noticed the alarming decrease in grasslands and increase in urban land. The SOC storage in 2020 was for 12,538 t/ha/40 cm lower than in 2002. Although grasslands showed the lowest SOC storage, their contribution to total SOC storage in dolines is very important. Since there is a lack of studies on carbon stocks in doline soils, our research is of great importance and a novelty and gives an important background for further research on SOC stock in karst landscapes worldwide. organic carbon sequestration karst grassland forests scrubland dolines sekvestracija ogljika kras travišča gozdovi grmišča vrtače true false true Angleški jezik Slovenski jezik Neznano 2023-04-20 10:10:28 2023-04-20 10:10:30 2023-04-21 03:35:46 0000-00-00 00:00:00 2022 0 0 str. 1-10 Vol. 218 [article no. 106548] November 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-11-01 633.2.03:551.448 0341-8162 10.1016/j.catena.2022.106548 118832387 https://reader.elsevier.com/reader/sd/pii/S0341816222005343?token=C5DD34F75D7C0EB6D43DFFD8D1BA22BE74B1C33CE34D6DD425F4846C9BC05087696B2A810896536DDE1B71F0988C68A3&originRegion=eu-west-1&originCreation=20220822201058 1 713f96a2-df4a-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22151 RAZ_Breg_Valjavec_Mateja_2022.pdf RAZ_Breg_Valjavec_Mateja_2022.pdf 1 594AC3EC7B67EC49CCACA53A00179588 be14a94ef49d4e173ea8cef5f86681f4de9106f0e7483d997f1c1dd264c8a2ff 87bbb4fc-df4a-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22153 Gozdarski inštitut Slovenije 0 0 0