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由于对天然次生林大规模、不合理开发利用,使我公司天然次生林质量不短下降,面积在减少,同时营造了大面积的落叶松人工纯林。目前,纯林的弊端已经、逐渐暴露出来,主要表现在树种单一,阔叶木材的减少,物种多样性下降,地力衰退,使资源的自我调节能力和维护生态平衡、防御自然灾害的能力下降,严重制约了国民经济和社会的可持续发展。因此,根据根据森林的演替规律对现有天然次生林采取栽针保阔等经营措施,已诱导成各类型针阔混交林,提高了林分的产量和质量,采取如下措施。
Due to the large-scale and unreasonable exploitation and utilization of natural secondary forest, the quality of natural secondary forests of our company is not shortened, the area is decreasing, at the same time, a large area of pure larch plantation is created. At present, the drawbacks of pure forests have been gradually exposed, mainly manifested in a single tree species, deciduous wood, decreased species diversity, decline in soil fertility, self-regulation of resources and ability to maintain ecological balance and defense of natural disasters, Seriously restricted the sustainable development of national economy and society. Therefore, according to the succession rule of the forest, existing coniferous and broad-leaved forests have been planted for the management of the existing natural secondary forests. Various coniferous and broad-leaved mixed forests have been induced to improve the yield and quality of the stands. The following measures have been taken.