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大别山杉木主要自然类型的研究
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摘要:
大别山区黄色类杉木可以划分为翘鳞、松鳞和紧鳞三种类型。作者调查了马宗岭和天柱山的8片10—20年生林分以及茅山80株60年生单株,并作了各类型的树干解析和木材密度测试。结果表明,三种类型,在球果直径、苞鳞数目、苞鳞形状等球果特征,以及在枝下高、节间距、树皮厚度、针叶密度和长度等形态特征上均有显著差异。诸类型的生长特性差异明显,胸径、树高和材积生长都呈现松鳞类型早期速生、紧鳞类型后期速生的趋势;而且紧鳞类型的木材密度显著地大于其它两种类型。松鳞类型可以用作营造中小径级速生林,紧鳞类型可以用作营造大径级优质丰产林,松鳞类型具有特殊的利用价值。
关键词:  杉木,类型选择,形态学,生长,生物量,木材密度
DOI:
基金项目:
A STUDY ON NATURAL TYPES OF CHINESE FIR IN DABIE MOUNTAINS.
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Abstract:
The group of yellow Chinese fir (Cunninghamia lanceolata (Lamb) Hook)in Dabie mountains may be subdivided into three types: the warped bract, theloose bract and the fast bract. Eight test plots of 10-20 years old stants inMazong mountain and Tianzhu mountain, and Eighty trees of 60 years old inMaoshan mountain were invested. The stem analysis and the wood density testof each type were made too. It shows that there are significant differencesbetween the types in the characters of strobile, such as strobile diameter, bractnumber and bract shape; in the morphology, such as clear trunk, internodedistance, bark thickness, frequency and needle length;as well as in the growthcharacters such as length, thickness and volume. The loose bract type havingthe habit of early-fast-growing can be used to grow fast-growing forest forlow-and middle-poles. The fast bract type having the habit of late-fast-growingcan be used to grow bumper forest for large poles. The warped bract type is ofvalue for special use.
Key words:  Chinese fir,Cunninghamia lanceolata,Types election,Morphology,Growth,Biomass,Wood density

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