大岗山常绿阔叶林不同生活型树种多度分布格局

为了揭示江西大岗山常绿阔叶林内常绿和落叶物种的多度分布格局,以及主导两类生活型物种群落构建的主要生态学过程,建立2 hm2长期固定样地并进行群落生态学调查.使用累积经验分布函数量化两类生活型物种的分布特征,利用6种物种分布模型进行数据拟合,采用Akaike信息准则(AIC)和Kolmogorov-Smirnov检验拟合...

Distribution of species abundance of different plant life forms in the evergreen broadleaf forest in Dagang Mountain

In order to reveal abundance distribution patterns of evergreen and deciduous trees in the same community and the major ecologic process of the community establishment by plant species of two leading plant life forms, a community ecological survey was conducted at the permanent plot with an area of 2 ha at the broadleaf evergreen forest in Dagan Mountain, Jiangxi Province. The distribution features of the plants of two different life forms were quantified by using the cumulative empirical distribution function, and fitted by using 6 distribution models. The goodness of fit of the 6 models were tested by using Akaike information criterion (AIC) and Kolmogorov-Smimov Test. The results showed that the top three evergreen tree species arranged by the importance value are Castanopsis fargesii, Cyclobalanopsis glauca and Rhododendron latoucheae in the broadleaf evergreen forest in Dagang Mountain, while the three deciduous tree species arranged by the importance value are Alniphyllum fortune, Sapium discolor and Vernicia montana. The distribution curves of the plant species of the two life forms in Dagang Mountain were all in a S shape and were not significantly different. The pure statistical model and the neutral theoretical model except the niche models were acceptable. Neutral processes play an important role in the formation of species-abundance distribution patterns of two plant life forms.