【摘要】 对27a生福建柏、杉木、马尾松和木荷混交林生长进行分析。结果表明:在1005株·hm^-2保留密度下,混交林平均树高、胸径和单株立木材积为13.71m、17.2cm和0.18381m³,分别比福建柏纯林大13.03%、1.18%和30.70%。混交林中小径木、中径木和大径木比例分别为52.5%、25.0%和22.5%。福建柏纯林中无大径木,小径木和中径木分别占42.5%和57.5%。混交林蓄积量183.8115m³·hm^-2,比福建柏纯林大30.07%。福建柏、杉木、马尾松和木荷对混交林蓄积量的贡献率分别为37.3%、25.37%、12.22%和25.07%,小径木、中径木和大径木对混交林蓄积量的贡献率分别为26.52%、31.19%和42.29%。混交林中福建柏平均树高、胸径和单株立木材积分别比福建柏纯林大17.64%、8.24%和50.16%,其中混交林中23.08%的福建柏为大径木。更多还原

【Abstract】 The growth of 27-year-old mixed plantation of Fokienia hodginsii, Cunninghamia Lanceolata, Pinus massoniana and Schima superb was analyzed in this paper. The results showed at the density of 1005 individual hm^-2, the average tree height, DBH and individual stand volume were 13.71 m, 17.2cm and 0.18381m³, respectively, which were more 13.03%,1.18% and 30.70% than that of the pure stand. There were 52.5% small diameter trees, 25.0% middle diameter trees and22.5% big diameter trees in the mixed plantation. There was no big diameter tree in the pure stand of F. hodginsii, and the small, middle diameter trees accounted for 42.5%, 57.5%, respectively. The volume of the mixed stand was 183.8115m³hm^-2, being more 30.07% than that of the pure stand. The contribution rate of F. hodginsii, C. Lanceolata, P. massoniana and S. superba to the mixed stand volume were 37.3%, 25.37%, 12.22% and 25.07%, respectively, and that of small, middle and big diameter trees to the mixed stand volume was 26.52%, 31.19% and 42.29%, respectively. The tree height,DBH and individual volume of F. hodginsii in the mixed stand was more 17.64%, 8.24% and 50.16% respectively than that of the pure stand. 23.08% of F. hodginsii individuals in the mixed stand were big diameter trees.更多还原