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1987年5月6日～6月2日大兴安岭北部林区发生了一场罕见的特大森林火灾,这场森林大火使森林惨遭破坏,形成了大面积火烧迹地。在35万公顷重火烧迹地中,适合人工更新的面积约20万公顷,按10年计划安排,每年需更新2万公顷,每公顷按2000株苗木计算,每年需苗木4000万株。北四局现有产苗能力,每年约400万株,仅占年需苗量的10%。以上数据表明,要想尽快恢复森林,急需解决苗木不足的问题,对此,笔者提出如下对策与建议。
From May 6 to June 2, 1987, a rare and superficial forest fire broke out in the northern part of the Greater Khingan Range. The forest fire destroyed the forest and formed a large-scale burned-out area. Among the 350,000 hectares of burned land, about 200,000 hectares are suitable for artificial regeneration. According to a 10-year plan, 20,000 hectares need to be renewed each year. According to 2000 seedlings per hectare, 40 million seedlings need to be planted each year. North Fourth Bureau existing seedling production capacity of about 4 million per year, accounting for only 10% of the amount of seedlings needed. The above data show that in order to restore the forest as soon as possible, the urgent need to solve the problem of shortage of seedlings, which, I propose the following countermeasures and suggestions.