短角幽天牛成虫的空间格局及其时序动态  

Spatial Pattern and Time Series Dynamics of Spondylis buprestoides Adults

作　　者：周书永 陈绘画 项宁宇 

机构地区：[1]浙江省临海市森防检疫站,浙江临海317000 [2]浙江省仙居县森防检疫站,浙江仙居317300 [3]浙江省临海市林业技术推广站,浙江临海317000

出　　处：《安徽农业科学》2012年第34期16647-16650,共4页Journal of Anhui Agricultural Sciences

摘　　要：2006～2011年在浙江省仙居县大北地溪林坦连续调查短角幽天牛,根据调查数据计算成虫种群的多项空间格局指标,然后分析各项指标与密度间的相关性,并从中选择受密度影响较小的负二项分布K值描述短角幽天牛成虫的空间格局及其时序动态。结果表明,林间短角幽天牛成虫呈聚集分布,但聚集度随季节而变化,每年5～6月和9～10月有2个明显的扩散高峰,在一个世代内的聚集趋势为聚集-扩散-聚集。Spondylis buprestoidcs adults in Pinus massoniana forests in Xianju Dabei Dixi Forestry Center were continuously investigated during 2006 and 2011. According to the survey data, multiple spatial pattern indicators of adult population were calculated, and the relationship be- tween various indicators and density was analyzed. The K values of negative binomial distribution less affected by the density were selected to describe the spatial pattern and time series dynamics of S. buprestoides adults. The results showed that S. buprestoides adults showed aggrega- ted distribution in the forest, but the aggregation degree varied with the season. There were 2 obvious diffusion peaks during May and June as well as September and October each year. The aggregation trend within a generation was aggregation-diffusion-aggregation.

关 键 词：短角幽天牛 种群 空间格局 时序动态 

分 类 号：S763.3[农业科学—森林保护学]