珍稀濒危植物长苞铁杉的分布格局

Spatial distribution pattern of the endangered and rare plant Tsuga longibracteata Cheng

应用聚集度指标、Iwao方程和Taylor幂法则模型等测定方法研究珍稀濒危植物长苞铁杉(TsugalongibracteataCheng)的空间分布格局。结果表明,长苞铁杉的空间分布呈随机分布。文中还根据Iwao的M与x的回归方程,计算长苞铁杉在不同密度和允许误差下的理论抽样面积。

The spatial distribution pattern of the endangered and rare plant \%Tsuga longibracteata \%Cheng was studied using aggregate index and Iwao’s equation and Taylor’s model. The results showed that the spatial distribution pattern of \%Tsuga longibracteata \%Cheng was random pattern in population. According to Iwao’s equation, the theoretical sampling area of forest survey were analyzed and calculated under different population densities and allowing errors.