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以微密度分析对属三个变种的七个加勒比松种源的木材密度径向变异模式进行了研究。主要结果是；各种源各株木材密度的径向变异曲线概貌大体一致，但不同种源间和种源内不同株间变异模式都有一定的变异，存在一定程度的不确定性；年轮平均密度的种源间差异在成熟材的大部分年龄上达０．０５或０．０１水平显著，而在幼龄材的半数年龄上差异不显著；表征变异模式的数字特征的种源间差异不显著。种源间和种源内株间年轮平均密度变异曲线间存在一定程度的交叉，种源间的年－年相关较显著，株间则大部分情况下相关不显著，但差异较大的株间相关显著。密度特征值间和密度特征值与年轮宽特征值间的关系，在年龄影响下和种源影响下两个变异过程中的分析结果，一部分比较一致，一部分则有差别。ＲＤ与ＲＷ的负相关主要表现在年龄影响下的变异过程中，而在种源影响下的变异过程并不显著。
The density variations of wood density of seven Caribbean pine seed sources, belonging to three genera, were studied by micro-density analysis. The main results are: the radial variation curves of wood density of various sources are generally the same, but there is a certain degree of variation in variation patterns among different provenances and within different provenances, with some degree of uncertainty; The differences in density between provenances were significant at 0.05 or 0.01 for most of the mature material, but not significant for half of the young woods; the differences in provenances between the provenances were not statistically significant Significant. There was a certain degree of crossover between the annual average density variation curves between provenances and provenances, with significant year-to-year correlations among provenances, but significant correlations between isolates in most cases but no significant differences between isolates Related significant. The relationship between density eigenvalue, density eigenvalue and annual ring width eigenvalue was analyzed. The results of the two variations under the influence of age and provenance were partly consistent and partly different. The negative correlation between RD and RW mainly manifested in the process of variation under the influence of age, while the process of variation under the influence of provenance was not significant.