土壤侵蚀是土地持续利用与管理的一个重大威胁,是人为土地退化的主要形式。奥德曼等人(1991)认为全世界大约有六分之一的可用地已遭风蚀或水蚀。土壤侵蚀还能造成异地环境问题,诸如增加空气中尘埃(Stetler等人1994;EPA1994),促使沉积物向河流和湖泊中的迁移(Robinson 1979),以及水库淤塞(Tagwira 1992)。全球变化会使目前状况更恶化。 Soil erosion is a major threat to the sustainable land use and management and the main form of human-induced land degradation. Oldman et al. (1991) concluded that about one-sixth of the world’s land available has been eroded or eroded. Soil erosion can also cause off-site environmental problems such as increased dust in the air (Stetler et al. 1994; EPA 1994), migration of sediments to rivers and lakes (Robinson 1979), and reservoir blockage (Tagwira 1992). Global change will make the current situation worse.