林分改造,是对密度小、低质林的特殊的经营措施。目的在于改变现有林相,变低产为高产,是一种采伐与人工更新相结合的林业措施。1、在确定林分改造对象时,要特别注意对不适宜立地条件生长的林分,要优先改造。如杨桦树为主的林分,在敦化市四海店和黄泥河林场,通过坡地和谷平地近千株树木的调查,发现生长在阴坡的黑桦、柞木、 Reforestation, is a small density, low-quality forests of the special management measures. The aim is to change the existing forest facies, to turn low yield into high yield, which is a forestry measure combining logging and artificial regeneration. 1, in determining the object of reforestation, we must pay special attention to unsuitable sites growing stand, to give priority to transformation. For example, the birch-poplar-based stands in the Sihai shop and the Huangniuhe forest farm in Dunhua City, through the investigation of nearly a thousand trees in the slope land and valley level, found that black birch, oak,