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牙克石林区的人工更新从五十年代开始,三十年来由于认真贯彻以人工更新造林为主的方针,使大面积的采伐迹地和荒山荒地披上了绿装,一代新林茁壮成长。三十年来共完成更新造林面积654万亩,保存面积354万亩,保存率为54.1％。其中:已郁闭成林面积106万亩,占保存面积的29.94％,可望抚育成林面积145万亩,占保存面积的40.96％;经补植可成林的103万亩,占保存面积的29.1％。人工林蓄积为900万立方米,平均每公顷蓄积37.8立方米,20年生落叶松人工林平均每公顷蓄积103立方米,年生长量5.8立方米;30年生落叶松人工林平均每公顷蓄积188.1立方米,年生长量6.3立方米。
Artificial regeneration of Yakeshi Forest District Since the 1950s, due to earnestly implementing the principle of artificial reforestation, the large-scale deforestation and barren hills and wilderness have been draped in green garments and the new generation of new forests have thrived. In the past 30 years, a total of 65.4 million mu of afforestation area has been completed with a preservation area of 3.54 million mu and a preservation rate of 54.1%. Among them, the area of closed forests has been 1.06 million mu, accounting for 29.94% of the preserved area. It is expected that the area for afforestation will be 1.45 million mu, accounting for 40.96% of the preserved area; and the area of 103 million mu Of 29.1%. Plantation reserves of 9000000 cubic meters, an average of 37.8 cubic meters per hectare accumulation, 20-year-old Larix plantation averaged 103 cubic meters per hectare, the annual growth of 5.8 cubic meters; 30-year-old Larch plantation average 188.1 cubic hectares of accumulation Rice, the annual growth of 6.3 cubic meters.