论文部分内容阅读
1 基本情况黎坪林场位于南郑县西南部,系米仓山西段南坡,南与四川旺仓县接壤,西于本省宁强县相连,经营森林总面积34.7万亩。其中有林地面积31.38万亩,疏林地2.01万亩,灌木林0.85万亩,宜林荒山0.36万亩。森林覆盖率90.3%,活立木蓄积237.6万 m~3,平均每公顷102.6m~3林区海拔1500~2300m,坡度一般25°~45°,据黎坪气象站(海拔1550m)观测:年平均气温7.4℃,无霜期160天,年日照1650
1 Basic Information Liping Forest Farm is located in the southwest of Nanzheng County. It is on the southern slope of Shanxi Province on the west side of Rice Cang, bordering Wangcang County in Sichuan Province on the south and Ningqiang County in the west on the west. It manages a total area of 347,000 mu of forests. Among them, there are 31.38 million mu of forest land, 2.01 million mu of sparse woodland, 85,000 mu of shrubbery and 36,600 mu of barren hills. The forest coverage rate is 90.3% and the live stock volume is 237.6 million m 3, with an average of 102.6m 3 per hectare. The forest area has an elevation of 1500-2300m and a gradient of 25 ° -45 °. According to the observation by Liping Weather Station (elevation 1550m) Temperature 7.4 ℃, frost-free period of 160 days, 1650 years of sunshine