苇状羊茅草地蜘蛛混合种群空间分布及动态

目的]了解苇状羊茅草地蜘蛛混合种群的空间分布及动态。方法]采用陷阱法系统调查,运用5种聚集度指标、Taylor的幂法则以及Iwao的M*-x的回归关系综合分析。结果]蜘蛛混合种群空间分布在苇状羊茅草地上以聚集分布为主,但在时序上存在交替现象。结论]该研究为进一步在草地害虫的综合治理中充分发挥蜘蛛的自然控制力提供了理论依据;但仅就草地蜘蛛混合种群的空间分布动态作了初步调查,苇状羊茅草地上害虫的种类与分布对草地蜘蛛混合种群空间分布的影响有待进一步研究。

Spatial Distribution and Dynamics of Spiders Fixed Population in Artificial Grassland of Tall Fescue

Objective] In order to understand the spatial distribution and timing sequence dynamic of spiders in artificial grassland, we made a comprehensive study on observational data. Method] The study was analyzed by adopting systematic investigation of pitfall traps, five indexes degree of aggregation, power law principle of Taylor, comprehensive analysis of regression relation M*-x of Iwao. Result] Most spiders collected by pitfall traps were wandering spiders, spatial distribution of spider population in artificial grassland of tall fescue showed a pattern of alternation in terms of timing sequence, most distributions were in collective state. Conclusion] There was a need to further study the effect of insect category and distribution in tall fescue grassland on the mixed population spatial distribution in grassland.