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作 者 ：董朝辉;许瑾;向春雷;刘恩德;彭华

期 刊 ：武汉植物学研究 2010年 28卷 1期 页码：34-37

关键词：特征成分；古夷平面；相关性；云南；

Keywords:Characteristic element, Ancient Planation Surface, Correlation, Yunnan,

摘 要 ：

生理生态学的原则是随着纬度的升高，物种分布的海拔高度将随之降低。但是，云南一些植物特征成分的分布却与之相反，它们的分布与云南残留的古夷平面的分布相似，即随着纬度的升高，其分布的海拔高度也随之升高。二者的区别是云南古夷平面分布的趋势线的仰角大于那些特征成分分布的趋势线的仰角。可能的原因是：相对于剧烈的地质运动，物种的适应能力总是相对滞后的，并且物种的分布也受到其生长特性的制约；根据分布区形成的原则，这些成分的发生应早于夷平面的隆起。

Abstract:Judging from an ecophysiological viewpoint,the altitudes of plants generally would become lower with the increase of their latitudes.As to some characteristic elements in the Yunnan flora,however,the situation has been found to be an exception.The distribution of these elements is similar to the distribution of the Yunnan Ancient Planation Surface.That is,there is a positive correlation between the altitude and the latitude of the distribution.The difference between them is that the elevation of the Yunnan Ancient Planation Surface’s distribution trendline is larger than that of the floristic elements.The likely reasons are the biological characters of these species and the adaption delay of plants relative to the geological change.According to the principle of distribution area’s generating, the origin of characteristic elements should be earlier than the uplift of Yunnan Ancient Planation Surface.

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