贵州习水国家级自然保护区福建柏生长过程研究

Study on Growth Process of Fokienia hodginsii Community in Xishui Nature Reserve in Guizhou

以习水国家级自然保护区福建柏为研究对象,进行了树干解析与测定,对福建柏的生长过程进行了分析。结果表明,福建柏的胸径快速生长期在30-35、40-45龄期间,树高快速生长期在15龄以前,材积的快速生长期在55-70龄间;胸径、树高、材积的连年生长量与平均生长量曲线分别在64龄、32龄、95龄时相交;胸高平均实验形数为0.37;利用SPSS统计分析软件,树高曲线拟合以三次曲线方程拟合效果最佳,其复决定系数为0.995;种间竞争强度最大的植物为杉木和腺萼马银花。

With Fokienia hodginsii in Xishui National Nature Reserve as the study object,the trunk was analyzed and determined,the growth process was studied. The results showed that the DBH rapid growth period of Fokienia hodginsii is in 30- 35,40- 45 age,tree height rapid growth stage is before 15 years old,volume rapid growth period is in 55- 70 ages; the current annual increment of DBH,tree height,volume and average amount of growth curves are all intersect at the age of 64,32,95 age; 0. 37 was a chest high average experimental form factor tree; software to analyze the tree height curve fitting effect by SPSS statistical analysis,tree height curve fitting is the best of three curve fitting equation,its complex coefficient of determination is 0. 995; interspecific competition intensity maximum plants are Cunninghamia lanceolat and Rhododendron bachii.