摘 要：
大果红杉为我国西南横断山区特有种,主要分布于云南省迪庆州东北部。通过对该地大果红杉资源调查,结果表明:迪庆州大果红杉面积达53 981.1hm2,占迪庆州林地面积的2.8%,蓄积量占全州森林蓄积量的3.0%。林分主要以纯林为主,面积占85.7%,几乎100%为天然起源,90.5%为生态公益林。林木开始老龄化,年生长率仅为1.94%,明显低于松科其他树种。幼树天然更新效果较差,有57.1%的面积幼树更新株数在1 000株·hm-2以下。
译 名：
Resources Characteristics of Larix potaninii var. macrocarpa in Diqing Tibetan Autonomous Prefecture
作 者：
Wang Youbing;Liu Qibin;Dali Branch,Yunnan Institute of Forest Inventory & Planning;
关键词：
Larix potaninii var.macrocarpa;;resource;;distribution;;Diqing Tibetan Autonomous Prefecture
摘 要：
Larix potaninii var.macrocarpais an endemic species to China of the southwest Hengduan Mountains,it mainly distributed in the northeast of Diqing Prefecture in Yunnan Province,the area is 53 981.1 hm2 that accounting for 2.8% of the forestland area &its volume accounting for 3.0% of the total forest storage in Diqing Prefecture.The area of pure forest accounts for 85.7%;almost 100%is natural origin,and 90.5%is ecological forest;age began showing aging,the annual growth rate reach only 1.94%,significantly lower than other species in pinaceae.High altitude,harsh climatic conditions,high shrub cover,and high canopy density lead to poor natural regeneration,accounts for 57.1% area that the number of young trees is under 1 000 trees·hm-2.According to the present situation of research on the above problems,some suggestions on the next step of scientific research and development were proposed.
