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牲畜践踏是导致牧草地泥沙流失的潜在不利因素之一。本研究对象是CoshoctouOhio附近的一个26hm~2未改良牧地流域,研究区域包括发源于流域内的一条小河。把河流(包括有树木的区域)用栅栏围起来,不让牛群通过。连续7年(1980．4~1987．3)在流域底部通过测量河流含沙量来测定泥沙流失量。由于牛被围在河棚外,在以后的5年中(1987．11~1993．3)年土壤流失量减少44%,由2.5t/hm~2减少到1.4t/hm~2。
Livestock trampling is one of the potential downsides to the loss of sediment from grasslands. The study area was a 26hm ~ 2 unmodified pastoral basin near Coshoctou Ohiio, which included a small river that originated in the basin. Fence the river (including the tree area) with a fence so that no cattle can pass through it. For seven consecutive years (1980.4 ~ 1987.3) sediment loss was measured at the bottom of the river basin by measuring the sediment concentration of the river. Since cattle were enclosed outside the river shed, soil erosion decreased by 44% in the next five years (1987.11 ~ 1993.3) from 2.5 t / hm 2 to 1.4 t / hm 2.