菜阳河自然保护区两种植被类型的林木胸径结构及时间格局多样性特征

以4块5000m2的植物群落样地的调查数据为基础,对菜阳河自然保护区的季节雨林、山地雨林优势树种胸径结构及群落时间格局多样性进行了研究。结果表明:该自然保护区的季节雨林目前处于恢复期。季节雨林的两块样地年龄比较接近,在内禀多样性上样地1略高于样地2,这是由二者所处的小地形差异引起的。而山地雨林目前处于近成熟阶段,其两块样地的年龄结构差异较大,在内禀多样性上样地4明显低于样地3,这是由其群落本身处于恢复期所决定的。

Study of Diversity Characters of DBH Structure and Temporal Pattern of Two Vegetative Types in Caiyanghe Nature Reserve

The diversity of dominant species DBH structure and temporal patternof seasonal rainforest and montane rainforest in Caiyanghe Nature Reserve was studied based on the survey data of four sample plots with the sample plot area of 5 000 m~(2). The study results showed that the seasonal rainforest of this nature reserve is now in the stage of recovery. The community ages of the two sample plots are similar. The temporal pattern diversity of sample 1 is a lot bit higher than that of sample 2, which is caused by the difference of microtopography between two plots. The montane rainforest is now in the near mature stage. The ages of two samples are widely different. The temporal pattern diversity of sample 4 is obviously lower than that of sample 3, this is mainly because the communities are in the stage of recovery.