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大兴安岭牙克石林区是我国主要木材生产基地之一。全区采运机械化比重虽高达95%以上,但更新造林长期处于手工作业的阶段。据牙克石林管局1985年资料,现有无林地约153.3万公顷,按目前年更新3.4万公顷,需45年(尚不含新增采伐迹地)。因之,结合该区坡度平缓(15°以内占80%以上),土层较薄(20～40cm)且多含石砾,生长期短(90～120天),地温偏低(造林李节地下仍有冻土层)等自然地理特点,因林因地采用天然、人工促进天然、人工等多种更新方式,尽快实现更新机械化,是恢复
Daxinganling Yakeshi Stone Forest is one of the major timber production bases in China. Although the proportion of mechanized mining in the whole region is as high as 95% or more, the reforestation has long been in a manual operation stage. According to the Yakeshi Forestry Bureau in 1985, there are about 1,533,000 hectares of non-woodland currently available, which is an increase of 34,000 hectares in the current year, taking 45 years (no new deforestation is yet to be included). Therefore, with the gentle slope (more than 80% within 15 °), the soil layer is thin (20-40 cm) and contains more gravel, the growth period is short (90-120 days) and the ground temperature is low Underground still frozen soil) and other natural and geographical features, due to natural forest, natural and artificial to promote a variety of man-made updates, as soon as possible to achieve the update mechanization, is to restore