摘要
该文首次提出了林下植物喜湿度参数ＭＬＰ（ＭｏｉｓｔｕｒｅＬｏｖｉｎｇＰａｒａｍｅｔｅｒ），并用包括ＭＬＰ在内的１４个林分因子与松毛虫危害程度进行逐步回归分析，从中筛选出主林层郁闭度、海拔高度、油松平均胸径和林下植物喜湿度参数４个关键因子，与松毛虫危害程度之间均呈显著的负相关关系，并进一步用这４个因子与松毛虫危害程度建立多元线性回归模型。
The harm extent of Dendrolimus tabulaeformis and D. spectabilis were analyzed by fourteen forest factors, from which four significant ones were selected: crown density, altitude, average diameter at breast height and MLP (Moisture Loving Parameter). MLP is a new parameter suggested in this paper. It is better than diversity index to the harm extent, and it can indicate some information on not only the under story plant species diversity but the forest environment. Using the four key factors a multiphase linear regression model was made for risk analysis of the harm extent of pine caterpillar.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
1999年第1期50-55,共6页
Journal of Beijing Forestry University
基金
国家自然科学基金
关键词
油松
赤松
毛虫
林分因子
回归分析
危害程度
Dendrolimus tabulaeformis, D. spectabilis, harm extent, forest factor, regression analysis, Moisture Loving Parameter
