摘要
运用扩散系数、聚集指数、平均拥挤度、聚块性指数和负二相参数等指标比较分析了中华真地鳖EupolyphagasinensisWalker在饲养池内的空间分布格局。结果显示 ,中华真地鳖在饲养池内的空间分布格局为聚集分布 ,并喜好聚集在饲养池的边缘。随着虫口密度的增大 ,向饲养池中央扩散。
The spatial distribution pattern of Eupolyphaga sinensis Walker in rearing pool were studied by comparison of Variance-Menu Ratio with indices of aggressive intensity(dispersal index,clumping index,mean crowding,patch index and intensity index).The results indicated that the spatial patterns of E.sinensis were clumped in rearing pool and they were fond of the margin of rearing pool.When the density increased,they dispersed rearing pool.
出处
《昆虫知识》
CSCD
北大核心
2004年第5期458-460,共3页
Entomological Knowledge
基金
安徽亳州兴邦科技发展有限公司提供资助
