Abstract— The CarboZALF-D manipulation experiment – experimental design and SOC patterns
Soil erosion by water or tillage is an essential landscape-shaping factor with feedbacks to the carbon cycle. To study C dynamics and C balances as a function of soil erosion we set up a manipulation experiment at field scale, called “CarboZALF-D”. A defined amount of topsoil material was removed from an eroded Luvisol towards a Colluvic Regosol and reactive, clay-enriched subsoil material was blended into the topsoil of the eroded Luvisol. By doing so we induced transient states for C cycling, net fluxes of CO2 and the C balance. The overall aim of our experiment is to get reliable findings to answer the question: Does soil erosion causes a CO2 source or sink in arable landscapes? In this paper the concept, implementation, and preliminary results of the manipulation experiment are described.
Keywords— bulk density, carbon stock, manipulation experiment, simulated erosion, SOC pattern.
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