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根据苏联的资料报导:鉴于俄罗斯北部和西伯利亚大片成熟和过熟的针叶林心腐现象极为普遍,因此有关方面正致力于寻找一种经济可行的方法来利用这种腐朽的木材
According to the Soviet Union, it is reported that in view of the widespread erosion of mature and over-mature coniferous forests in northern Russia and Siberia, efforts are being made to find an economically viable way to utilize this decayed timber