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在宜良、新平和禄丰3个地点各选择1个有代表性的林分,每个林分从林冠层和更新层分别按通直和扭曲的树干表型性状采集针叶,并对7个针叶表型性状进行测量和比较。结果表明:在林冠层和更新层中,通直群体和扭曲群体间并不存在明显差异,云南松林冠层通直群体和扭曲群体的针叶性状(针叶长度、针叶粗度、针叶束粗、叶鞘长度)平均值均大于更新层,而云南松针叶的形状指数(针叶长度/针叶粗度、针叶长度/叶鞘长度、针叶束粗/针叶粗度)在林冠层和更新层间差异不大;云南松针叶性状在群体间和群体内均存在极其丰富的变异,7个针叶性状指标的变异系数按大小顺序为NL/FSL(22.20%)>NL/NW(19.15%)>FSL(19.04%)>NW(19.00%)>NL(16.61%)>FW(15.10%)>FW/NW(13.20%);云南松针叶性状大部分表现为群体间变异小于群体内变异,群体间总体平均表型分化系数为20.90%,群体内的变异占79.10%,说明群体内变异是云南松针叶性状变异的主要来源。
One representative forest was selected in each of the three sites of Yiliang, Xinping and Lufeng. Each forest was collected from coniferous and twisted layers according to the straight and distorted trunk phenotypic traits, and 7 Needle phenotypes were measured and compared. The results showed that there was no significant difference between the canopies and the twisted populations in the canopy and the regeneration layer. The coniferous populations (coniferous length, Bundle thickness and sheath length) were higher than those of the updated layer, while the shape index (length of needles / diameter of needles, length of needles / length of leaves, diameter of needles) There was no significant difference between the two groups. The abundance variation of the needle-leaf habitat of Pinus yunnanensis in both populations and in groups showed that the coefficient of variation of seven indicators of coniferous traits was NL / FSL (22.20%)> NL / NW 19.15%)> FS (19.04%)> NW (19.00%)> NL (16.61%)> FW (15.10%)> FW / NW The overall mean phenotypic differentiation coefficient was 20.90% in the population and 79.10% in the population, which indicated that intraspecies variation was the main source of variation of Pinus yunnanensis.