对云南碧塔海亚高山云冷杉林内４个样地冠层树木的生长压制和释放的历史，用树木年轮分析方法进行了重建，然后根据生长释放频率推测林冠干扰强度（每１０年冠层树木的死亡百分率）。４个林分（１个中龄林，３个成过熟林）生长释放的平均百分率为４８％～９２％。中龄林内，平均生长释放频率为７１％／１０ａ，成过熟林则为７４％～９５％／１０ａ，在油麦吊云杉〔Ｐｉｃｅａｂｒａｃｈｙｔｙｌａｖａｒ．ｃｏｍｐｌａｎａｔａ（Ｍａｓｔ．）ＣｈｅｎｇｅｘＲｅｈｄ．〕占优势的林分和大果红杉（Ｌａｒｉｘｐｏｔａｎｉｎｉｖａｒ．ｍａｃｒｏｃａｒｐａＬａｗ）油麦吊云杉混交林分内，估测的林冠干扰强度分别为４８％／１０ａ和５９％／１０ａ。 The history of canopy compression and release of canopy trees in 4 sites in Abies alpine fir forest in Bitahai, Yunnan Province was reconstructed by tree-ring analysis method. The canopy disturbance intensity was deduced from the frequency of growth and release Percentage of trees killed). The average percentage of growth and release of 4 stands (1 middle-aged forest and 3 mature forest) was 48% -92%. In the middle-aged forest, the average frequency of growth and release was 71% / 10a, and overmature forest was 74% ~ 9.5% / 10a. complanata (Mast.) ChengexRehd. The dominant canopy disturbances were 4. 8% / 10a and 59% / 10a, respectively, in the mixed stands of Larixpotaninivar.macrocarpaLaw L.