在对洮河林区云杉、冷杉林分调查研究的基础上,探讨现实林分的结构、生长、更新、演替等规律。采用三种计算方法,推算了云杉、冷杉林分的择伐周期,结合经济、自然条件,分析论证云杉、冷杉林分的择伐周期以25年为宜,并据此提出了适宜的择伐强度、择伐径级、择伐量等技术指标。 Based on the investigation of spruce and fir forest in the Yonghe forest area, the law of structure, growth, renewal and succession of the realistic forest stand was discussed. Three kinds of calculation methods were used to deduce the selective cutting cycle of spruce and fir stand. According to the economic and natural conditions, the selection cycle of spruce and fir stand was analyzed in 25 years, and the suitable Selective cutting strength, selective cutting diameter class, selective cutting and other technical indicators.