Global Soil and Sediment transfers in the Anthropocene

摘要: Anthropogenic soil erosion reduces productivity, compromises freshwater ecosystem services, and drives geomorphic ecological change in rivers floodplains. It is now well accepted that the rate of anthropogenic exceeds production by several orders magnitude many parts Earth (Montgomery 2007), threatening sustainability food so essential to human well-being. Deposition eroded downstream has profoundly altered structure function fluvial deltaic ecosystems, often with negative impacts on societies economies depend them (Hoffmann et al. 2010). The legacy these exerts strong influence over modern future functions. In agricultural natural processes no longer primarily control deposition, greatly sediment fluxes are a key marker Anthropocene (Syvitski Kettner 2011).