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滇西北林区是我国主要的林区之一,其林木组成主要为针叶树种,其中冷杉属树种比率较高,蓄积量亦较大。冷杉属树种中,又以川滇冷杉(Ahles forr-estii Craib)、长苞冷杉(A. georgei Orr)、黄果冷杉(A. ernestii Rehd)和苍山冷杉(A. delavayi Franch)四种为最常见。为了给滇西北林区的开发利用提供合理用材的科学依据,我室对上述四种冷杉木材的性质和用途进行了必要的研究。试材采自滇西北丽江地区王龙雪山黑白水林区的原始森林內,即川滇冷杉7栋,平均树龄90年;长苞冷杉5株,平均树龄78年;黄果冷杉7株,平均树龄81年。至于苍山冷杉的物理力学性质数据,系我室以前与云南林学院森工系合作进行试验的成果,为了便于对照,本文将一并论述。
The forest in northwestern Yunnan is one of the main forest areas in China. Its forest composition is mainly coniferous species, of which, the proportion of Abies species is higher and its volume is larger. Among the genus Abies, four species of A.lesorr-estii Craib, A. georgei Orr, A. ernestii Rehd and A. delavayi Franch are the most important species common. In order to provide a scientific basis for the rational use of wood for the development and utilization of forest areas in northwestern Yunnan, I conducted a necessary study on the properties and uses of the above four kinds of fir wood. The test materials were collected from the virgin forest in the Heilongshe Black-and-white Watershed, Lijiang, northwest Yunnan Province, ie, 7 Fir forests of Chuan and Yunnan with an average age of 90 years; 5 long-bred fir trees with an average age of 78 years; 7 yellow fescue trees with an average of 81 years old As for the physical and mechanical properties of Cunninghamia lanceolata, it was the result of the experiment conducted by our lab with the forest engineering department of Yunnan Forestry College in the past. In order to facilitate the comparison, this article will be discussed together.