桃一点叶蝉及其天敌类群时空生态位分析

Temporal and Vertical Spatial Niche of Erythroneura sudra and Its Natural Enemies

对桃一点叶蝉及其天敌类群的时间生态位宽度与重叠值进行研究。结果表明,1年中桃一点叶蝉利用了时间资源序列的全部等级,因在各个等级上利用的资源极不均衡,其生态位宽度值较小。食蚜蝇科、三突花蟹蛛、瓢虫生态位宽度较大。

Investigation on the temporal niche breadth and overlap of Erythroneura sudra and its natural enemies indicated that Erythroneura sudra appeared in all time stages of the year.As to the individual,there were remarkable differences between each time stages,and this resulted in a low niche breadth index.