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地处沂蒙山区的沂水、沂源、蒙阴、平邑、费县、沂南六县,面积12141.66平方公里,占沂蒙山区总面积的79.4％。因地形复杂,地势倾斜度大,森林覆盖率低,水土流失严重。为了探求林业在沂蒙山区农业生态经济系统中的地位和作用,本文根据林业资源调查材料,经过系统分析,提出林业发展设想,供商榷。 一、林业发展的特点(一)覆盖率低幼龄林多沂蒙山区6县林业用地面积546万亩,占总面积的30％;有林地面积351.33万亩,占林业用地面积的64％,低于全区(临沂地区,下同)平均(81％)水平;森林覆被率为21％。在有林地中,中、幼龄
Located in Yimeng Mountain Yishui, Yiyuan, Mengyin, Pingyi, Fei County, Yinan six counties, an area of 12,141.66 square kilometers, accounting for 79.4% of the total area of Yimeng Mountain. Due to the complex terrain, topography gradient, low forest cover, soil erosion is serious. In order to explore the status and role of forestry in agro-ecological economic system of Yimeng Mountain, this paper based on the forestry resources survey materials, through systematic analysis, put forward the forestry development vision for discussion. First, the characteristics of forestry development (A) Low coverage rate Lam Duong Yi Mengshan District 6 counties of forestry land area of 546 mu, accounting for 30% of the total area; forest area of 351.33 hectares, accounting for 64% of the land area of forestry, low In the region (Linyi area, the same below) the average (81%) level; forest cover rate of 21%. In the woodland, medium and young age