武夷山景区松墨天牛种群密度与环境因子的坐标变换对应分析  

Correspondence analysis between population density and environmental factors of Monochamus alternatus Hope (Coleoptera:Cerambycidae) in Wuyishan Scenic Spot by coordinate transformation

作　　者：杜瑞卿[1,2] 陈顺立[2] 余培旺 范正章[2] 

机构地区：[1]河南南阳师范学院生命科学与技术学院,河南南阳473061 [2]福建农林大学林学院,福州350002 [3]武夷山林业局,福建武夷山354300

出　　处：《昆虫学报》2010年第2期183-191,共9页Acta Entomologica Sinica

基　　金：福建省科技厅重大科技专项(2006NZ0001-2);武夷山风景名胜区管委会资助项目;南阳师范学院科研项目

摘　　要：为了探明松墨天牛Monochamus alternatus Hope种群密度指标与环境因子的对应关系,在福建武夷山风景区设立了10块马尾松林监测标准地,通过对松墨天牛的6个数量指标和7个环境因子的调查,对调查结果进行了坐标变换对应分析。结果表明:海拔(Y1)对松墨天牛的6个指标都有正向的促进作用,郁闭度(Y6)和地被物覆盖率(Y7)对6个指标都有负向的抑制作用;林龄(Y2)、树高(Y3)、坡向(Y4),也都是正向的促进作用,但影响程度也较小;坡位(Y5)关系最不密切,影响程度也较小;最为敏感的指标是幼虫平均虫口密度(X1)、雌成虫虫口密度(X2)、下层虫口密度(X5);其次为雄成虫虫口密度(X3)、冠层虫口密度(X4);最不敏感的是诱捕器成虫捕获量。这些结果表明:环境因子对松墨天牛数量变化有重要影响,但不同因子影响程度不同,不同的松墨天牛数量指标对环境变化的敏感程度也不同。This study aims to analyze the relationship between population density of the long-horn beetle, Monochamus alternatus Hope and environmental factors. In ten standard monitoring sites in pine forest of Wuyishan Scenic Spot, six density indices and seven environmental factors were sampled and the survey results were analysed corresponding to the coordinate transformation. The results showed that altitude （ Y1 ） had a positive effect on the six density indices, while canopy size （ Y6 ） and ground cover area （ Y7 ） had negative effects on them. Tree age （ Y2 ） and height （ Y3 ） and slope position （ Y4 ） also had positive but not significant effects. Slope position （ Y5 ） mostly was not closed with the index. The population densities of larvae （X1）, female adults （X2） and adults at the lower layer （X5） were most susceptive to the environmental factors, followed by the population densities of male adults （X3 ）, and adults at the canopy （X4）. The adult catches in trap were the most insensitive to the environmental factors. It is so concluded that the effect of environmental factors on population densities of M. alternatus is significant but different.

关 键 词：松墨天牛 马尾松 种群密度 环境因子 坐标变换对应分析 

分 类 号：Q969[生物学—昆虫学]