山阳县位于秦岭南麓,是一个山大沟深,石厚土薄,地面辽阔,群众居住分散的山区。全县总面积约4千平方公里,其中森林面积达226万多亩,占土地总面积的37.9%。每年平均降雨量约800毫米,且多集中在夏秋季节,冬春比较干旱。解放前,在国民党反动派统治时期,对原有森林乱砍滥伐,大肆破坏,致使山区水土流失严重,水旱冰雹等自然灾害频繁,群众的生 Shanyang County is located in the southern foot of the Qinling Mountains, is a mountain ditch deep, thin soil thick, the ground is vast, scattered masses of people living in the mountains. The county a total area of ​​about 4,000 square kilometers, of which 2.26 million mu of forest area, accounting for 37.9% of the total land area. The average annual rainfall of about 800 mm, and more concentrated in the summer and autumn, more dry in winter and spring. Before the liberation, during the reign of the Kuomintang reactionaries, the original forests were deforested and vandalized, resulting in frequent soil erosion and floods, hail and other natural disasters in the mountainous areas.