UN Chief Desertification Scientist Barron Joseph Orr Urges Addressing Land Degradation

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Soil erosion or land degradation (which may lead to desertification) is a complex phenomenon, involving two processes: the breakdown of aggregates and the transport of the resulting fine particles to other places. In addition to the loss of the soil layer, which contributes to desertification, dragged particles can act as a vehicle for transmission of pollution (pesticides, metals, nutrients, minerals, etc.). It is a natural phenomenon, but it h…