摘要
应用聚集度指标测定法、线形回归方程检验法和空间频次分布检验研究皱绿柄天牛幼虫的空间分布型.结果表明,皱绿柄天牛幼虫的空间分布型属聚集型的负二项分布.在此基础上,利用Iwao的M*-m回归方程分别计算出了0.05、0.1及0.2允许误差水平下皱绿柄天牛幼虫的最适抽样数.
Using methods of aggregation index determination, linear regression equation and spatial frequency distribution, spatial distribution patterns ofAphrodisium gibbicolleLarvae was studied. The results showed spatial distribution patterns ofAphrodisium gibbicolleLarvae was negative binomial distribution.Based on this, by usingM＊ -mregression equation of Iwao, under allowed error range of the 0.05, 0.1 and 0.2the optimal sampling number was calculated.
出处
《林业调查规划》
2011年第1期69-72,共4页
Forest Inventory and Planning
关键词
皱绿柄天牛幼虫
空间分布型
负二项分布
最适抽样数
DPS数据处理系统
Aphrodisium gibbicolleLarvae
spatial distribution patterns
negative binomial distribution
optimal sampling number
DPS data management system
