Organic carbon transport under simulated rainfall conditions for different land uses
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Universidad Autónoma Chapingo
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The demand for information on carbon transport led to the generation of data on the output of organic carbon in soil particles in suspension. Different land uses were considered: buffelgrass pasture (BGP), abandoned farmland (AFL) and native rangeland (NR). The rainfall simulation technique was used to generate runoff on runoff plots (3 x 1 m) in order to obtain in each land use a 0.5-liter aliquot, from which the solid sediments (soil and organic material) were separated and the carbon percentage determined by the Walkley & Black analysis method. A randomized block experimental design with three replications was used to determine differences in carbon content (%). The results show that the highest average values of carbon in suspended sediment were recorded in native rangeland and under initial moisture conditions (3.79 %), whereas the best land cover conditions in the buffelgrass pastures and abandoned farmland plots (1.20 and 1.18 % respectively) had lower carbon losses than those that occurred in the native rangeland (3.11 %).
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