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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。
In order to find out the corresponding relationship between Monochamus alternatus Hope population density index and environmental factors in the Monochamus alternatus Hope population, 10 masson pine monitoring standards were set up in Wuyishan Scenic Spot of Fujian Province. Through 6 quantitative indexes and 7 environments Factor survey, the survey results were coordinate transformation corresponding analysis. The results showed that altitude (Y1) had a positive effect on all six indicators of Monochamus alternatus, and both canopy density (Y6) and cover of ground cover (Y7) had a negative effect on six indexes (Y2), tree height (Y3) and aspect (Y4) were also positive facilitation, but the degree of influence was also small. The relation of slope position (Y5) was the least and the influence degree was small. The most sensitive indices were larval average population density (X1), female population density (X2) and lower population density (X5), followed by male adult population density (X3) and canopy population density (X4) Trap adult catches. These results show that the environmental factors have an important influence on the change of the number of Monochamus alternatus, but the influence degree of different factors is different. The quantitative indexes of different Monochamus alternatus varieties are also sensitive to environmental changes.