一、山区生产规划的重要性:我国山区的面积约占全国土地总面积的百分之七○以上,这些广大的山区,是我国农、林、牧业生产的主要基地。由于过去反动阶级长期统治,以及在旧社会制度下对土地利用不合理,使森林和草原遭到破坏,形成了严重的水土流失,降低了山区 First, the importance of mountain production planning: China’s mountainous area accounts for about 70% of the country’s total land area. These vast mountainous areas are the major bases for the production of agriculture, forestry and animal husbandry in our country. Long-term rule by the reactionary classes in the past and the irrational use of land under the old social system have caused the destruction of forests and grasslands, resulting in serious soil erosion and lowering of mountainous areas