濒危植物连香树种群空间分布格局分析

Spatial Distribution Patterns of Cercidiphyllum japonicum Populations,an Endangered Plant

以空间代替时间的方法调查了喇叭河自然保护区和宝兴县两个地区天然连香树种群,研究了不同群落类型下天然连香树种群空间分布格局。结果表明:2个地区连香树种群分布格局相似,均呈集群分布,但集群程度有差异;在不同发育阶段的连香树种群分布格局方面,幼树的聚集程度较高,从幼树到大树聚集程度有减弱的趋势,即有扩散的趋势,其中幼树到中树的扩散趋势较明显。

The population structure of Cercidiphyllum japonicum was investigated in Labahe Nature Reserve and Baoxing County by the method of space substituting time. Analysis was made of the spatial distribution patterns of Cercidiphyllum japonicum populations in different communities. The results showed that the spatial distribution patterns of CercidiphyUum japonicum populations in these two areas were similar, and were generally clumpy. During different growth stages of Cercidiphyllum japonicum, the aggregation intensity of saplings was stronger, and the aggregation intensity had a decreasing tendency from saplings to trees. Besides, the diffusion tendency are relatively apparent from saplings to mid-age trees.