摘要
本文以油松毛虫卵(块)种群空间格局研究为例,讨论了频次分布拟合X2检验法存在的测定上的不敏感性问题;讨论了扩散型指数法中扩散系数C的置信区间检验法、Iδ指数的F检验法、丛生指标I的W检验法和离差指数ID的X2检验法对低密度种群测定上的敏感性差异问题,并按相同信度条件下测定敏感性大小进行排序。此外。
Taking the study of spatial distribution of the eggs of Dendrolimus tabulaeformis as an example,this paper discussed the problems of determination unsusceptibility existed in X 2 -test of fit frequency distribution,and susceptibility differences in the determination of the low density populations existed in following tests:confidence interval test of diffusion coefficient C in the method of diffusion index; F -test of I δ index; W -test of clumping index I;X 2 test of dispersion index I D. An order was given according to their susceptibilities determined under the same degree of confidence. Moreover,the significance test of the coefficients in the method of regression model analysis as well as the test of fit conformity test in -m polymomial regression were described in detail.
出处
《西北林学院学报》
CSCD
1996年第3期59-65,共7页
Journal of Northwest Forestry University
关键词
油松毛虫
种群
空间格局
检验
significance test of coefficient
fit conformity test
determination susceptibility
method selection
low density population