桃园节肢动物群落的多样性、均匀度和相对稳定性季节动态

对桃园节肢动物群落进行了系统调查，并对数据进行了数学分析．结果表明，群落与植食动物亚群落的多样性指数相关系数为0．9480，两者极显著相关；群落与捕食动物亚群落的多样性指数相关系数为0．7855，两者极显著相关；两个亚群落的多样性均与群落多样性有关，两个亚群落多样性指数间相关系数为0．6741，两者显著相关；群落多样性指数与群落均匀度指数问相关系数为0．7870，两者极显著相关；群落多样性指数与两个亚群落均匀度指数之间均不相关．群落多样性指数(H’)，与捕食性动物个体数(Sd)和植食性动物个体数(Sz)之比值(Sd／Sz)相关系数为0．8112，两者极显著相关；与群落物种数(Sz)和个体数(Si)之比值(Sz／Si)相关系数为0．9188，两者极显著相关；与捕食动物类群(科)数(Spl)和植食动物类群(科)数(Szl)之比值(Spl／Szl)不相关。

Seasonal dynamics of arthropod community diversity,evenness and relative stability in peach orchards

This study showed that the diversity index of total arthropod community in peach orchards was significantly correlated to the diversity index of both phytophages (r = 0.9480) and predators sub-communities (r = 0.7855), and the two sub-communities were correlative (r = 0.6741). It was also significantly correlated to the evenness index of total community (r = 0.7870), but not correlated to the evenness index of both sub-communities. The diversity index (H') of total community was significantly correlated to the ratio of predators individuals (Sd) and phytophages individuals (Sz) (r = 0.8112) and of species (Ss) and individuals (Si) (r = 0.9188), but not correlated to the ratio of predators (Spl) and phytophages (Szl).