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应用地统计学的方法,研究了祁连山北坡石羊河上游,6—10月之间红腹牧草蝗Omocestus haemorrhoidalis(Charpentie)雌雄虫的空间分布格局、动态变化及空间相关性。结果表明:红腹牧草蝗雌雄虫的半变异函数为球状模型与高斯模型,二者空间分布类型相同,均呈聚集分布;随时间的变化均呈现“扩散-聚集-扩散-聚集”的动态特征,7—8月之间雌虫的变化强度明显强于雄虫;二者的模糊贴近度指数在0.53～0.71之间,且指数随红腹牧草蝗的生长呈逐渐增加到减少的变化特征,表明雌雄虫在数量与空间上有较强的跟随关系,且跟随关系随红腹牧草蝗的生长发生明显的阶段性变化。
By using the method of geostatistics, the spatial distribution pattern, dynamic change and spatial correlation of Omocestus haemorrhoidalis (Charpentie) female and male were studied in the upper Shiyang River on the northern slope of Qilian Mountains from June to October. The results showed that the semivariogram of the male and female of A. graminicola was a spherical model and a Gaussian model, both of which had the same type of spatial distribution and all showed the same distribution of distribution. The temporal variation showed “diffusion-aggregation-diffusion-aggregation” The dynamic change of females was stronger than that of male from July to August. The fuzzy closeness index of the two was between 0.53 and 0.71, and the index increased gradually to decrease with the growth of the bullfrog The results showed that there was a strong following relationship between the male and female in quantity and space, and the follow-up relationship evolved obviously with the growth of the bulldozers.