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英山县位于鄂东大别山区,旱地(包括农作物用地和茶、桑、果、药等经济林用地)面积为166279亩,其中:农用旱地54279亩,经济林用地112000亩,占总土地面积的7.7%,占全县水土流失面,积40.95万亩的41.55%。这些旱地都具有严重水土流失的潜在危险。其原因有三: 一是旱地土壤成土母质绝大部分为风化花岗片麻岩,主要分布在低山丘陵的山岭、岗地和斜坡上,发育于花岗片麻岩的残积物和坡积物,岩层风化强烈,抗蚀抗冲力低; 二是我县地处江淮之间,雨量充沛,暴雨多,侵蚀力强。多年平均年降水量为1300~1400毫米,4~8月降雨量占全年降水量的70.15%,最大年降水量为2311.7毫米,最大日降雨量为330毫米。
There are 166279 mu of dry land (including land for crops, tea, mulberry, fruit, medicine and other economic forest land) in Yingshan County, including 54279 mu of agricultural dry land and 112000 mu of economic forest land, accounting for 7.7% of the total land area. Accounting for 41.55% of the total area of 404,500 mu. These drylands have the potential for serious soil erosion. There are three reasons for this: First, the vast majority of dryland soil parent materials are weathered granite gneiss, mainly distributed in hilly mountains, hillocks and slopes, and developed in the granite gneiss of debris and slope sediment , Strong rock formation, low erosion resistance; Second, the county is located between Jianghuai, abundant rainfall, heavy rain, strong erosion. The annual average annual rainfall is 1300 ~ 1400 mm. From April to August, the rainfall accounts for 70.15% of the annual precipitation. The maximum annual rainfall is 2311.7 mm and the maximum daily rainfall is 330 mm.