摘要
运用聚集度指标、回归模型、零频率等方法对福建闽北地区杨树粒肩天牛幼虫的空间格局进行测定。结果表明该天牛幼虫在杨树林中呈聚集分布,分布的基本成分为个体群,个体之间相互吸引。用零频率方法分析得出,粒肩天牛种群类型为“聚集度零频率制约型”。并确定了该天牛幼虫林间调查的最适理论抽样数和序贯抽样模型。
By use of the aggregation indexes method, regressive model analysis method and zero frequency method, the spatial distribution patterns of Apriona germari （Hope） larva were studied. The results led to estimate the assemble distribution type for larvae in the forest. The basic distribution component was individual colony. Within each colony, the individuals attracted each other. According to the zero frequency method, the A. germari population belonged to ＂zero frequency dependent＂ type. Otherwise, the optimal theoretical sampling number of the larva and the sequential sampling model were obtained.
出处
《华东昆虫学报》
2006年第3期206-210,共5页
Entomological Journal of East China
基金
南平市科技局项目资助(N2005-30)。
关键词
杨树
粒肩天牛
空间格局
聚集度指标
回归模型
最适理论抽样
Populus
Apriona germari
spatial distribution pattern
aggregation index
regressive model
optimal theoretical sampling
