美国农业部的数据表明从20世纪80年代早期至90年代中期，全国范围内的耕地侵蚀数量大体上在下降，然后主要的就是停滞不前。

U.S.D.A. data shows that the amount of farmland erosion nationwide from water fell substantially from the early 1980s to the mid-1990s, then largely stagnated.

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据估计，三分之一的可耕地为酸雨区，一些气候学家预测在长期范围内该国的粮食作物将出现减产。

By some estimates acid rain falls on a third of all agricultural land; some climate experts predict long-term reductions in the country's vital rice crop.

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这也明显的表明总体的范围非常大：8000万公顷，这比英国，法国，德国和意大利的耕地总面积之和还要多。

It is also clear that the overall scope is vast: 80m hectares is more than the area of farmland of Britain, France, Germany and Italy combined.

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