马尾松闽粤栲混交林生长与竞争效应

对10年生马尾松闽粤栲6∶1混交林的生长状况和竞争态势进行了分析研究。研究结果表明:闽粤栲与马尾松混交林分生长较好,闽粤栲是马尾松的优良的混交树种。混交林中马尾松比纯林中马尾松的平均树高和平均胸分别增加12.8%和6.1%。混交林中马尾松生长量有着越靠近闽粤栲列中心,生长量越高。运用Hegyi单木竞争指数模型分析混交林种内、种间竞争。结果表明:两种群间存在较剧烈竞争,种间竞争大于闽粤栲种内竞争。

Growth and Competition Effect on Mixed Forest of Castanopsis fissa and Pinus massoniana

The growth conditon and competition trend of ten-year mixed forest (6 Pinus massoniana and 1 Castanopsis fissa) were analysed and researched. The results show that the mixed forest grows well,C. fissa is a good mixed trees of P. massoniana. The mean height and mean chest height diameter of P. massoniana in mixed forest increased by 12.8% and 6.1% than those of the pure stands respectively.The nearer increment of P. massoniana in mixed forest got to the tabulate centre of C. fissa,the growing amount is higher. Intraspecific and interspecific competition of mixed forest were analysed by Hegyi index model. The competition of two populations is intense,interspecific competition is greater than intraspecific competition.