摘要
本文应用Twao、Taylor等的回归分析法和聚集度指标测定方法，研究了柳杉毛虫幼虫的空间分布型。结果表明幼虫的空间分布型为聚集型分布。柳杉毛虫在树冠上层占16．9％，中层占30．2％，下层占52．9％，且在上中下层的分布型均为聚集分布。
Inthis paper Iwao and Taylor regression models and indices of aggregation were used to study the spatial pattern of Dendrolimus hou Lajonquiere. The result showed the spatial distribution pattern of larvae was of an aggrgated petern. Dena-olimus holi Lajonquiere covered 16. 9% in the upper crown, 30.2%in the middle crown and 52. 9% in the low crown of the trce, and the spatial pettem of upper, middle and low crown were all of aggregated Pattern.
出处
《生物灾害科学》
1998年第4期9-11,21,共4页
Biological Disaster Science
关键词
柳杉毛虫
聚集度指标
空间分布型
Dendrolimus houi
Lajonquiere
indices of aggregation
the spatial distribution
