摘要
采用频次分布检验、聚集度指标检验、回归模型检验等方法,对栗链蚧在锥栗林的空间格局进行测定,结果表明,栗链蚧在锥栗林中呈聚集分布,分布的基本成分为个体群,并且聚集度随种群的密度升高而增加。栗链蚧虫口数量在锥栗林单株东、西、南、北、中不同方向间存在差异,在上下不同层次间也存在差异。通过抽样技术的研究,得出了序贯抽样表和理论抽样数表。
The spatial distribution pattern of A sterolecanium castaneae Russell in Castanea Henryi Orchard was determined by the methods of frequency distribution, aggregation index and regression model. The results showed that the spatial distrubution of Asterolecanium castaneae Russell in Castanea Henryi Orchard was the aggregated distribution patten and its basic component was individual colony.The higher the population density of sterolecanium castaneae Russell was,the higher its aggregated degree was . The population density were different in the orientations of eastern, southern,western ,northen and middle of the tree, were different between the upper and lower layers also. After the study of sampling technique, the sequential sampling table and theoretical sampling quantity table were obtained.
出处
《福建林业》
2013年第5期42-44,共3页
Fujian Forestry
基金
福建省自然科学基金(2009J01328)
南平市科技计划项目(N2009Z23)
关键词
栗链蚧
锥栗林
空间格局
抽样技术
Asterolecanium castaneae Russell
Castanea Henryi
spatial distribution pattern
sampling technique
