摘要
本文对华山松木蠹象为害木分级、蛹的空间分布型、抽样技术以及发生与环境关系进行了研究。结果表明，华山松木蠹象为害木可分为４ 级：正常木、初侵染木、近枯死木、枯死木。蛹的空间分布型为聚集分布。抽样部位以树干下部为最佳。用逐步回归分析方法，通过计算机处理调查数据得出，在９５ ％ 的可靠性下。
This study, on one hand, researched into the relation between occurrence of armand pine bark\|weevil and envromental factors and on the other hand, it also carried out an exploration to grading of damaged trees, spatial distribution pattern of pupa and smapling technique. The results demonstrate that the trees damaged by the armand pine bark\|weevil can be graded into 4 levels: normal, primarily infectious, nearly withered, and withered. All the spatial distribution patterns of pupa are aggressive distribution, the best sampling position is the foot of tree, and under 99% reliability, the environmental factor which has major influence on the number of armand pine bark\|weevil population is growing potential of trees.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1999年第6期73-75,共3页
Scientia Silvae Sinicae
基金
云南省重点基金
关键词
华山松木蠹象
空间分布型
环境因子
华山松
Armand pine bark\|weevil, Spatial distribution pattern, Sampling technique, Environmental factor, Population density
