摘要
采用野外样株调查方法和11种数学方程与计算机软件SPSS13.0相结合的统计分析方法,对湖南藤本植物胸径大小与其支柱木的胸径大小之间的相关性进行了研究,其结果是:(1)全部藤本植物胸径大小与其支柱木胸径大小的比率是1:6.36,而缠绕、卷曲、搭靠和吸固各攀援方式的胸径大小与其支柱木的胸径大小的比率分别为1:5.61、1:4.92、1:5.89、1:15.46;其中吸固类藤本的支柱木胸径的平均值是最大的。(2)全部藤本植物胸径大小(y)与其支柱木胸径大小(x)的相关曲线是:y=-4.75×10-1+3.44×10-1x-1.13×10-2x2+1.61×10-4x3;缠绕类藤本植物胸径大小与其支柱木胸径大小的相关曲线是:y=2.68×10-1x0.829;卷曲类藤本植物胸径大小与其支柱木胸径大小的相关曲线有两条,分别是:y1=1.88×10-1x01.981,y2=e(1.93-12.222/x2);搭靠类藤本植物胸径大小与其支柱木胸径大小的相关曲线是:y=6.92-8.74×10-1x+4.95×10-2x2-7.45×10-4x3;吸固类藤本植物胸径大小与其支柱木胸径大小的相关曲线是:y=-1.16+3.64×10-1x-1.72×10-2x2+2.56×10-4x3。
The relationship between vine diameter at breast height (DBH) and its host tree DBH in the natural forests in Hunan Province, China, has been studied using field surveys of sample trees and statistical analysis tools including the SPSS13.0 computer software and 11 mathematical equations. The results demonstrate: (1) The ratio of the DBH of all vines to the DBH of their host trees is 1:6.36; the ratio of DBH of each climbing type: twining, curling, hooking and adhering, to the DBH of their host trees is 1:5.61, 1:4.92, 1:5.89 and 1 : 15.46, respectively, among which the average DBH of the host trees for adhering vines is the largest. (2) The relationship of the DBH of the vines (y) to the DBH of the host trees (x) is y = - 4.75×10 ^-1 + 3.44 × 10 ^-1x - 1.13× 10^-2x2 + 1.61 × 10^-4x3 for all vines combined; y = 2.68× -1x1^0.981^-1 e(1.93-12.222/x2) 10^-1x^0.829 for the twining vines; y, = 1.88× 10^-1 or Y2 for the curling vines; y = 6.92 - 8.74 × 10^-1x + 4.95 ×10 -2x^2 - 7.45 × 10 -4x3 for the hooking vines ; and y = - 1.16 + 3.64 × 10^-1x - 1.72 x 10^-2x2 + 2.56 × 10^-4x^3 for the adhering vines.
出处
《生态学报》
CAS
CSCD
北大核心
2007年第10期4317-4324,共8页
Acta Ecologica Sinica
基金
国家"948"资助项目(200209)
湖南省自然科学基金资助项目(99JJY20025)~~