种环 circle of specles

互联网2013-11-14

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种环 circle of specles 作为整体分布区是广的，但构成整体的各个种则随地区而稍呈现差异，并且这些种是逐渐趋向于代换，这种种的集群称为种环。该词并不完全是专门的术语。是小种的对应词，德语称为Artenkreis，而是B．Rensch提议设在种环上的等级。大体上和E．Mayr所提倡的超种一致。

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