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.
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.
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.
应用推荐