【摘要】 本文根据大、小兴安岭、长白山鱼鳞松的5400个针叶和180个球果的统计分析,讨论了其地理变异规律。随着纬度增加,球果增大,针叶长度增加。方差分析表明:大兴安岭和小兴安岭之间球果直径和长度的差异大于小兴安岭和长白山之间的差异,叶长度的差异则相反。球果大小沿纬度的变化可能与温度变化相关,叶长度及叶气孔线条数的变异可能与高山强烈的直接辐射及叶的强烈蒸腾有关。更多还原

【Abstract】 According to the statistical analysis of 5400 needles and 180 cones from the Daxing’an Mts. Xiaoxing’an Mts. and Changbai Mts., the geographical variation of some traits of the needles and cones in "Yezo spruce" (Picea jezoensis var. jezoensis and P. jezoensis var. komarovii) are discussed in Northeastern China. With the increased of latitude, the size of cones and needles become bigger. The difference between Daxing’an Mts. and Xiaoxing’an Mts. in size of cone is more significant than that of between Xiaoxiog’an Mts. and Changbai Mts., but the difference of length of needle is contrary. The variation from south to north is continuous. The change in size of cones probably bear relation to change of latitude. The change in lengthof needles is perhaps due to the strong direct radiation of higher mountains and strong transpiration of needles.更多还原