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我局云冷、杉占优势的林分,面积均占过熟林的38％。主重类型有阔叶云、冷杉林、枫桦云、冷杉林、红松云、冷杉林及云、冷杉林。在海拔1400米处,分布有岳桦、鱼鳞松林。对云、冷杉林分。我局历来采取择伐作业。1961年以前实行径级择伐,以后是采育择伐。据1979年采伐更新普查,全局择伐比重占80.3％,而云,冷杉林分则几乎百分之百实行择伐。为了观察择伐后林分生长及更新效果,从1974年起,按不同地理位置,不同立地类型
My bureau cloud cold, fir dominant forest, the area accounted for 38% of mature forest. The main types of broadleaved clouds, fir forest, maple birch cloud, Abies fir, Pinus koraiensis, abies fir and cloud, fir forest. 1400 meters above sea level, there are distributed Yue birch, fish scale pine forest. On the cloud, fir forest. Our bureau has always taken selective cutting operations. Prior to 1961 the path of selective cutting, mining and selective cutting. According to the 1979 Census Regeneration Survey, the overall proportion of selective cutting accounted for 80.3%, while the percentage of fir and fir trees was almost 100%. In order to observe the growth and regeneration effect after selective cutting, from 1974, according to different geographical locations, different site types