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山杨是黑龙江省次生林中分布较广和软阔叶树种。其面积占次生林面积的25％蓄积占次生林总蓄积的1/10。特点是,适应性强,生长快,易繁殖,轮伐期短。是采伐迹地和火烧迹地天然更新的先锋树种。常形成纯林或杨桦林。可供造纸,火柴材、餐具材和民需建筑材。 在采育关系比例失调,木材短缺的情况下,如能合理经营这些林分,因地制宜的利用自然力,对逐步实现更新跟上采伐,扩大森林后备资源,山杨林是可以起到积极作用的。
Populus euphratica is widely distributed in the secondary forest in Heilongjiang Province and soft broad-leaved tree species. The area accounts for 25% of the secondary forest area, accounting for 1/10 of the total volume of the secondary forest. Characterized by strong adaptability, fast growth, easy reproduction, short rotation. It is a pioneering species that is naturally updated on deforested and burned grounds. Often form a pure forest or birch forest. For paper, wood, tableware and building materials needed. In the situation of imbalance in the relationship between the development of parenting and the shortage of timber, if we can manage these forests reasonably and make use of natural forces according to local conditions, we can play an active role in gradually updating and keeping up with logging and in expanding forest reserve resources.