【摘要】 以大兴安岭根河地区4株天然兴安落叶松解析木作为研究对象,采用相关分析法分析兴安落叶松晚材率与气候因子的相关性,以揭示兴安落叶松径向生长晚材率对主要气候因子变化的响应。结果表明:(1)兴安落叶松晚材率无论是对生长前期的温度变化还是对生长季的温度变化都呈现出极显著的相关性,尤其是与年平均温度的相关性表现的最为显著,4个样本的相关性分别表现为1号0.594、2号0.655、3号0.695、4号0.665,显著性均达到0.01水平。(2)在大兴安岭兴安落叶松晚材率与降水的相关性分析时发现,兴安落叶松的晚材率只与生长前期的冬季降水存在相关性。分别为1号0.472、2号0.328、3号0.377、4号0.322,其中1号样本与降水的相关性在0.01水平上呈极显著正相关,2、3、4样本与降水的相关性在0.05水平上呈显著正相关。更多还原

【Abstract】 Taking four natural analytical woods of Larix gmelinii in Genhe as the research object,the correlative analysis method has been used to analyze the correlation between latewood percentage of Larix gmelinii and climatic factor in order to reveal the response of latewood percentage of radial growth for Larix gmelinii to main climatic factors. The results show:( 1) There is remarked significant correlation between latewood percentage of Larix gmelinii and the climatic change in early growth stage or in growing season,especially for the correlation of annual mean temperature. The correlation of four samples is 0. 594 for No. 1,0. 655 for No. 2,0. 695 For No. 3 and 0. 665 for No. 4 separately,which the significances reach up to the 0. 01 level.( 2) The late wood percentage of Larix gmelinii has only correlated with the winter precipitation in early growth stage. The correlations are 0. 472 for No. 1,0. 328 for No. 2,0. 377 for No. 3,and 0. 322 for No. 4,in which,the correlation between No. 1 sample and the precipitation shows the remarked significant positive correlation at the 0. 01 level,and No. 2,No. 3 and No. 4 sample show the significant positive correlation with the precipitation at the 0. 05 level.更多还原