西南林业大学学报2018，Vol.38Issue(2)：10-15,6.DOI:10.11929/j.issn.2095-1914.2018.02.002
宝天曼马尾松和槲栎混交林的竞争关系分析
The Competitive Relationship of Pinus massoniana and Quercus aliena Mixed Forest in Baotianman National Nature Reserve
摘要
Abstract
In this study,one hm2(100 m×100 m) Pinus massoniana and Quercus aliena mixed forest was selected in Baotianman National Nature Reserve as sample plot.All trees in the plot(DBH≥1 cm) were investiga-ted,and intra and inter species competition of P.massoniana was studied by Hegyi competition index model. The results showed that there were many large diameter trees,but less seedlings,and the number of P.massoniana in-creased gradually with the increase of diameters. There were 1 581 competitive trees, of which were many young trees and the number of competitive trees decreased gradually with the increase of diameters. The total intensity of intraspecific competition about object woods (244.92) was much larger than that of interspecific competition (176.10) and the intensity of intraspecific competition of P.massoniana increased with the increase of DBH,while the intensity of interspecific competition decreased with it. The other competitive trees had competitive pressure on P.massoniana and the sorted relationship was Quercus acutissima>Quercus aliena>Platycarya strobilacea>Quercus variabilis>Picea koraiensis>Cyclobalanopsis myrsinifolia>Quercus aliena var.acutiserrata>Lindera glauca>Ulmus pumila. A function regression was performed to simulate the correlation between diameter and intensity of the com-petition. It is founded that there was an exponential relationship between them with significant correlation CI=AeBD (P<0.01),this model could be used to predict the community competition of P.massoniana in the plot.关键词
自然保护区/混交林/马尾松/槲栎/种内/种间/竞争强度Key words
nature reserve/mixed forest/Pinus massoniana/Quercus aliena/intraspecific/interspecific/competitive intensity分类
农业科技引用本文复制引用
陈诗,海鑫,史训旺,叶永忠,袁志良,房会普,刘晓静,王婷..宝天曼马尾松和槲栎混交林的竞争关系分析[J].西南林业大学学报,2018,38(2):10-15,6.基金项目
国家自然科学基金项目(31270493)资助. （31270493）
