凤凰山蕨类的生态及地理分布的研究——辽宁省凤凰山地植物学的研究之三

Studies on Some Ecological and Phytogeographical Problems of Pteridophytes Indigenous to Mt.Feng-Huang Shan——Geobotanical studies of Mt.Feng-Huang Shan,Prov.Liao-Ning(Ⅲ)

本文是根据我系植物腊叶标本室所藏的凤凰山蕨类标本加以整理,列出目录后,然后探讨这些蕨类的生态分布及地理分布。笔者认为凤凰山的蕨类在山域内的生态分布在不同的位置上是很不一致的:首先这些蕨类分布和木本植物分布是相关连的,即是海拔愈高,森林较多时,蕨类的分布较多,其次湿度大的环境下,羊齿系数值也愈大。在蕨类的地理分布上,在远东地方的日本海周边区域是蕨类的地理分布亲密度最大的区域,而在此区域的西北方及西方则蕨类的分布亲密度显然下降;此外,用相同系数法的统计,凤凰山列入长白区是无疑的(当然也属于日本海周边区域内)。最后本文提及关于竹内亮教授所倡的“Komarov 线”的位置(由哈尔滨至瀋阳一段)介于长春和净月潭之间,即是满洲植物区的最西边缘只到达净月潭,从蕨类的分布亲密度来看,这种说法也是较为恰当的。

1.The distribution of pteridophytes of this mountain has most rela- tionship to the density of forest and humidity. 2.The mountain of Feng-Huang Shan should be enclosed in the sur- rounding region of Sea of Japan due to the distribution of pteridophytes of this mountain was like that of the surrounding region of Sea of Ja- pan. 3.From the standpoint of distribution of pteridophytes the author agrees the opion which was proposed by Prof.Takenouchi that the west margin of“Komarov Line”should not be enclosed the Changchun city.