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Title

Basic data underlying research in manuscrip "Variation of soil organic carbon, stable isotopes, and soil quality indicators across an erosion–deposition catena in a historical Spanish olive orchard"

AuthorsGómez Calero, José Alfonso ; Guzmán, Gema ; Toloza, Arsenio; Resch, Christian; García- Ruiz, Roberto; Mabit, Lionel
Keywordsolive
organic carbon
Soil erosion
organic nitrogen
Issue Date15-Apr-2020
AbstractThis study compares the distribution of bulk soil organic carbon (SOC), its fractions (unprotected and physically, chemically, and biochemically protected), available phosphorusCE1 (Pavail TS4), organic nitrogen(Norg), and stable isotope ( 15N and 13C) signatures at four soil depths (0–10, 10–20, 20–30, and 30–40 cm) between a nearby open forest reference area and a historical olive orchard (established in 1856) located in southern Spain. In addition, these soil properties, as well as water stable aggregates (Wsagg), were contrasted at eroding and deposition areas within the olive orchard, previously determined using 137Cs. SOC stock in the olive orchard (about 40 t C ha􀀀1) was only 25% of that in the forested area (about 160 tC ha􀀀1) in the upper 40 cm of soil, and the reduction was especially severe in the unprotected organic carbon. The reference and the orchard soils also showed significant differences in the 13C and 15N signals, likely due to the different vegetation composition and N dynamics in both areas. Soil properties along a catena, from erosion to deposition areas within the old olive orchard, showed large differences. Soil Corg, Pavail and Norg content, and 15N at the deposition were significantly higher than those of the erosion area, defining two distinct areas with a different soil quality status. These overall results indicate that the proper understanding of Corg content and soil quality in olive orchards requires the consideration of the spatial variability induced by erosion–deposition processes for a convenient appraisal at the farm scale.
DescriptionConjunto de datos de los experimentos origen del citado artículo
URIhttp://hdl.handle.net/10261/211171
DOIhttp://dx.doi.org/10.20350/digitalCSIC/12513
Appears in Collections:(IAS) Conjuntos de datos
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Soil 2019.rarConjunto de datos para el artículo: Erosion deposition, Carbon Fractions, Carbon Stock, Isotope Data, Soil Quality Data51,35 kBUnknownView/Open
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