Does Agricultural Erosion Create a Carbon Sink or Source?
Transport in runoff: detachment and transport can shift OC from a protected state in aggregates to an available state where it mineralizes more rapidly. Burial: the deposition of eroded OC moves OC into a low-mineralization context and can also enhance protection via aggregation. Subsoil mixing: at sites of erosion new OC formation from new vegetation inputs into exposed subsoil by erosion may replace some of the eroded. OC. Net primary production (NPP) feedback: erosion and deposition may affect the nutrient and soil depth status (and hence soil fertility) as well as the environmental factors that control OC input versus output. (Source: Van Oost, K. and Six) 2/2 Back to the Article
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