丽腹弓角鳃金龟成虫在柳树上的空间分布型及抽样技术

Spatial Distribution Patterns and Sampling Techniques of Toxospathius auriventris bates Adults on Willows

运用聚集度指标, Taylor幂法则和Iwao回归分析法,对丽腹弓角鳃金龟在西藏林芝柳树上的成虫空间分布格局进行了分析。结果表明:各组样本的各项指标均符合聚集分布的检验标准,同时成虫个体间相互吸引。总结出田间调查抽样方法为分行取样法,并得出田间成虫不同密度时的理论抽样数。

In this paper, aggregation index, Taylor power law and Iwao regression analysis method were used to analyze the spatial distribution pattern of adult worm of Toxospathius auriventris bates in willow trees in Nyingchi, Tibet. The results showed that all indexes of each group conformed to the test standard of aggregated distribution, and the adults at the same time attracted to each other. It was concluded that the sampling method for field investigation was branch sampling, and obtained the theoretical sampling number of different densities of field adults.