Variation of soil organic carbon, stable isotopes, and soil quality indicators across an erosion–deposition catena in a historical Spanish olive orchard
José A. Gómez,Gema Guzmán,Arsenio Toloza,Christian Resch,Roberto García-Ruíz,and Lionel Mabit
Applied Physics Dept., University of Córdoba, Córdoba, Spain
Arsenio Toloza
Soil and Water Management & Crop Nutrition Subprogramme, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
Christian Resch
Soil and Water Management & Crop Nutrition Subprogramme, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
Roberto García-Ruíz
Animal and Plant Biology and Ecology Dept., Ecology section, Center
for Advanced Studies in Olive Grove and Olive Oils, University of Jaén, Jaén,
Spain
Soil and Water Management & Crop Nutrition Subprogramme, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
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The long-term evolution of soil organic carbon in an olive orchard (planted in 1856) was evaluated and compared to an adjacent undisturbed natural area. Total soil organic carbon in the top 40 cm of the soil in the orchard was reduced to 25 % of that in the undisturbed area. The deposition downslope in the orchard of sediment coming from the eroded upslope area did not increase the accumulation of organic carbon in soil, but it quadrupled available phosphorus and improved overall soil quality.
The long-term evolution of soil organic carbon in an olive orchard (planted in 1856) was...
