天宝岩天然猴头杜鹃种群空间分布格局研究

Study on Spatial Distribution of Natural Rhododendron simiarum Populations in Tianbaoyan Nature Reserve

运用聚集度指标、Iwao模型和Taylor幂法则等测定方法对天宝岩自然保护区天然猴头杜鹃种群空间分布格局进行了研究。结果表明:聚集度指标、Iwao模型和Taylor幂法则均说明天宝岩自然保护区天然猴头杜鹃种群的分布格局为聚集型,这是由猴头杜鹃种群本身的生物学特性、种间种内关系及其所处的环境条件等决定的。最后,根据Iwao回归方程,计算了不同密度和允许误差下的理论抽样数。

The spatial distribution of natural Rhododendron simiarum populations in Tianbaoyan nature reserve was studied by means of aggregated indices, Iwao model and Taylor equation, to provide theo-retical reference for the management of natural R. simiarum forests and the protection of the resources. The results showed that： the aggregated indices, Iwao model and Taylor equation indicated that the distribution pattern of R. simiarum populations in Tianbaoyan nature reserve was aggregated, which was determined by the biological characteristics of R. simiarum population, inter-specific and intra-specific relationship, and the environmental conditions and so on. According to the Iwao equation, the theoretical sampling numbers under different densities and allowing errors were calculated.