红松的生长与气候生态因子关系的研究

本文在研究中采用了树高指数作为气候因子对红松生长影响的数量指标。经过多元线性逐步回归分析和主分量分析得出如下结果.红松是对气候因子反应比较敏感的树种。由于各类气候因子不是孤立存在, 而是相互影响, 相互制约的, 所以气候生态因子对红松生长的影响是错综复杂的。各个因子通过单优势性、协同作用、拮抗作用等形式对红松生长产生直接影响和间接影响。气候生态因子对红松生长的影响是各因子的综合效应, 然而各因子对红松生长影响的大小并不相同。≥10℃积温影响最大占52.79%, 降雨量次之占18.62%, 二者的影响占71.41%是影响红松生长的主导因子。回归方程为Y=0.2924577+6.26395531×10^-5x₂+6.45308913×10^-5x₄.x₂=降雨量, x₄=10℃积温)。

STUDY ON RELATIONS BETWEEN CROWTH OF KOREAN PINE AND FACTORS OF CLIMATIC ECOLOGY

In the study, height index of tree was taken as the index number of effect of climatic factors. Throgh analysis of multivariate Linear stepwise regression equation and principal component analysis, the results wers as follows:Korean pine was a relatively sensitive species iu response to climatic facors. The effect of climatic ecology factors on the growth of Korean pine was complex because different kinds of climatic ractors did not exist independently and they effected each other and restricted each other. Those factors effected Korean pine directly and indirectly in forms of single dominance or synergy or antagonism. The effect of climatic ecology factors on Korean pine was integrated influence of different factors. And each factor has differentinfluence on growth of Korean pine. The greatest iufluence was≥10℃ acumulative temperature, that was 52.79%. Raifall was the next to it, makingup 18.62%. The influence of the two was 71.41%, which were leading fa-ctors effecting Korean pine growth. regression equation was Y=0.2924577+6.26395531×10^-5x₂+6.45308913×10^-5x₄ (x₂=rainfall, x₄=≥10℃ acumulative temperature.)