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1979年,林业部基建局调研组,曾就大、小兴安岭和完达山林区提出合理林道网密度,並按资金来源作了分配(表1)。我们知道,上述路网密度目标大体要求在30年左右即大体相当于择伐作业的采伐周期内实现,而並不急于短期内实现。但是,就现有密度状况和筑路力量,能否按期达到上述目标,都是迫切需要搞清楚的问题。我们根据黑龙江省林业总局计划处的统计资料,计算了包括牙克石林区在内的64个林业局的现有路网密度(表2)。可以看出,这个密度数字还是相当低的。
In 1979, the research team of the Infrastructure Bureau of the Ministry of Forestry proposed a reasonable density of forest roads on the Great and Little Hinggan Mountains and Wandashan Forest Areas, and distributed them according to the sources of funds (Table 1). We know that the above road network density target generally needs to be achieved within about 30 years of harvesting, which is roughly equivalent to selective cutting, rather than in a short period of time. However, regarding the current density conditions and the road building strength, it is an urgent issue that needs to be clearly figured out whether these targets can be met on schedule. We calculated the existing road network density of 64 forestry bureaus including Yakeshi (Table 2) according to the statistical data of the planning department of Heilongjiang Provincial Forestry Bureau. As can be seen, this density figure is still quite low.