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应用聚集度指标法和地统计学方法对山东泰安泰兴苗圃紫薇重要害虫紫薇梨象成虫的垂直分布和水平分布进行研究.传统统计学分析表明,紫薇梨象成虫的垂直分布为聚集分布,聚集均数λ大于2,聚集是由其本身行为和习性引起的,而不是由环境因子引起的.地统计学分析表明,在6月4日、16日、29日、7月25日和8月22日5个时间点的半变异函数拟合模型分别为高斯模型、高斯模型、线性模型、高斯模型和线性模型,而在7月12日和8月7日为随机模型.紫薇梨象成虫种群水平分布总体上为聚集分布,且成虫间存在空间相关性.紫薇梨象成虫种群在不同时间的空间相关范围即变程在1.68~9.79.
The vertical distribution and horizontal distribution of the adult peach crape myrtle of Taixia crassipes in Taixing, Taian, Shandong Province were studied by means of aggregation index and geostatistics. The traditional statistical analysis showed that the vertical distribution of the crape myrtle adults was aggregation distribution, aggregation The number λ is greater than 2, and aggregation is caused by its own behavior and habit, not by environmental factors. Geostatistical analysis shows that on June 4, 16, 29, July 25 and August 22 The semi-variogram fitting models at the five time points were Gaussian, Gaussian, linear, Gaussian, and linear models, respectively, and were stochastic on July 12 and August 7. The average population size The distribution was generally aggregated and distributed, and there was spatial correlation between adults.The spatial correlation range of the adult population of Ziwei pear as the time ranged from 1.68 to 9.79.