论文部分内容阅读
在森林草原地区山杨是一个分布最广的树种。例如在捷耳列尔马诺夫(沃龙涅什省东南)的森林里,山杨林占森林复蔽面积的12%。山杨的木材在这里可以用做建造房屋和畜舍的梁桁,还可以获得交手杆和大柴,甚至枯枝还能找到需用者。并且能够在短期内生产出大量建筑材。因此,应给山杨以特殊的评价。山杨所以重要还在于捷耳列尔马诺夫林场生产的70%左右的木材,是供给附近地区使用,其余的30%是靠铁路运往遥远
Aspen is one of the most widely distributed tree species in the forest steppe. For example, in the forests of the Czech Republic (the southeast of Włonieşoje), poplar forests account for 12% of the forest cover. Aspen wood here can be used to build houses and barns of the beam girder, you can get the handlebar and firewood, and even dead branches can find the user. And in the short term to produce a large number of building materials. Therefore, we should give a special evaluation of Shan. Aspen is therefore also important in the fact that about 70% of the wood produced by the Czech Al Mareman Forest is supplied for use in the vicinity and the remaining 30% is transported by rail