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关山林区是陕西五大林区之一,地处秦陇交界,属六盘山东延支脉。陇县位于关山东侧,境内分布着栎类、山杨、桦木等阔叶混交林104.9万亩,其中中幼龄林70.5万亩,近成熟林21.7万亩,蓄积量360.6万立方米。疏林地5.6万亩,灌木林地17.1万亩,荒山荒地33.1万亩。森林覆被率30.9%。林区山势陡竣,地形复杂,灌木地、荒坡荒地与有林地交错分布。由于解放前历代统治者不重视对森林的保护,无控制地乱砍滥伐,使大面积的森林遭到破坏,形成了林相不整,林龄不一,卫生不良,生产力逐渐消退的残败多代萌生林,亩蓄积量平均仅3立方米左右。陇县现有四个经营林场,
Guanshan Forest District is one of the five major forest areas in Shaanxi Province, located at the junction of Qin Long, Lianyungang is a branch of Shandong extension. Long County is located in the east side of Guanshan, the territory of the distribution of oaks, aspen, birch and other broad-leaved mixed forest of 1,049,000 mu, of which young and middle-aged forest 705,000 mu, near mature 21.7 hectares, volume 3606,000 cubic meters. 56,000 mu of unspoiled woodland, 171,000 mu of shrubbery land and 331,000 mu of barren mountain wasteland. Forest cover rate of 30.9%. Forest steep mountains, complex terrain, shrub land, barren wasteland and woodland staggered distribution. Because before the liberation of the previous rulers did not attach importance to the protection of forests, deforestation and deforestation, the destruction of large areas of forests, the formation of the forest is not the same, different age, poor health, productivity gradually diminished many generations of defeat Meng Lin, acres of stock volume average only about 3 cubic meters. Longxian existing four operating forest farm,