杜鹃冠网蝽在毛杜鹃上的空间分布型及理论抽样模型

Spatial Distribution Pattern and Theoretical Sampling of Stephanitis Pyriodes Scott on Rhododendron Simsii

本研究通过对毛杜鹃Rhododendron simsii不同方位和高度的随机取样,并运用5种聚集度指标、Taylor幂法则和和Iwao线性回归模型分析并测定了杜鹃冠网蝽Stephanitis pyriodes Scott的空间分布格局。结果表明:杜鹃冠网蝽主要分布在毛杜鹃的下层,以北面居多。杜鹃冠网蝽在毛杜鹃上呈聚集分布,聚集强度随种群密度的升高而升高,个体间互相吸引,分布的基本成分为个体群,聚集原因是由自身的生物学习性和外界的生存环境共同作用所引起的。

The spatial distribution pattern and theoretical sampling of Stephanitis pyriodes Scott on Rhododendron simsii was analyzed.The spatial distribution pattern of S.pyriodes in R.simsii was analyzed by using the five population aggregating indexes,Talyor's power law and Iwao's regression model by random samplingat 4different directions and 3 different heights within the plant.The results showed that the distribution of the S.pyriodes mainly is located at the lower and northern locations of R.simsii.The spatial distribution pattern of the S.pyriodes in R.simsi tends to the aggregating distribution,and the degree of aggregation increased with the density,the individual attracts each other,and the distribution of the basic ingredients is an individual group,The primary cause of S.pyriodes aggregation is caused by the comprehensive influence of their own biological habits and environmental factors.