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辽宁西部叶柏寿地区由于土地利用长期不合理,自然植被遭到严重破坏,在气候因子作用下,土壤侵蚀强烈,水土大量流失,耕地缩减,肥力降低,已成为当地发展农林生产的主要障碍之一。 本区气候属半干旱类型,年降水量400～500毫米,降雨特点高度集中,7、8两个月即占全年降水量70％以上,在此期间常有强度很大的暴雨,有时连续1～2天的大雨,就可降落全年总雨量的1/3～1/4或更多,这是本区地表径流大量发生的主要原因。 辽西丘陵地形起伏,坡度稍大而坡面较短。叶柏寿地区现有的母质类型至少有以下几种:花岗片麻岩、页岩残积物;红土;第四纪黄土性沉积;红土及黄土混合坡积物。成土母质的不同类型,在很大程度上决定着土壤的基本物理性质,对土壤侵蚀的发展影响颇大。
Due to long-term unreasonable land use and serious damage to natural vegetation in Yebai Shou area of western Liaoning, under the action of climatic factors, strong soil erosion, large loss of water and soil, shrinkage of cultivated land and decrease of fertility have become one of the main obstacles in the development of local agriculture and forestry production. The climate in this area is a semi-arid type, with an annual precipitation of 400-500 mm. The rainfall features are highly concentrated, accounting for more than 70% of the annual rainfall in the two months of July and August. During this period, heavy rainfall often occurs, sometimes continuously Heavy rainfall of 1 to 2 days can drop 1/3 ~ 1/4 or more of the total annual rainfall, which is the main reason for the large-scale occurrence of surface runoff in this area. The hilly terrain in western Liaoning undulates with a slightly larger slope and a shorter slope. There are at least the following types of parent materials in Yebai Shou area: granitic gneiss, shale remnants; laterite; Quaternary loess sediments; and laterite and loess mixed slopes. The different types of soil parent materials determine the basic physical properties of soils to a great extent, which have a great impact on the development of soil erosion.