衡水湖湿地园林树木臭椿沟眶象发生状况调查

Investigation on the Occurrence Situation of Eucryp torrhynchus brandti on Landscape Trees in Hengshui Lake Wetlands

2009年9月调查了衡水湖北堤不同园林树木上臭椿沟眶象的发生情况,对不同园林树木上臭椿沟眶象的分布和臭椿树上距地面不同距离树干段(0～1 m,1～2 m,2～3 m)上的臭椿沟眶象分布进行了数量统计.结果显示在衡水湖北堤,臭椿沟眶象不在火炬和槐树等其它园林树木上发生,只发生在臭椿树上,并且不同地点臭椿沟眶象的发生状况没有明显的区别,不同臭椿树树干段之间臭椿沟眶象的发生情况也没有显著差异;同时臭椿沟眶象在臭椿树上的发生状况和臭椿树的胸径没有明显关系.

In September 2009 we investigated the occurrence situation of Eucryp torrhynchus brandti on different landscape trees along the north bank of Hengshui Lake.During the investigation,the number of Eucryp torrhynchus brandti was counted not only on various trees but also on different trunk segments（e.g.0-1m,1-2m,and 2-3m） of Ailanthus altissima Swingle.Our results indicated that Eucryp torrhynchus brandti occurred only on Ailanthus altissima Swingle along the north bank of Hengshui Lake;no differences in its occurrence situation were found among study sites and different trunk segments.In addition,no correlation relationship was determined between the number of Eucryp torrhynchus brandti on different trunk segments and the diameter at breast height of Ailanthus altissima Swingle.