A STUDY OF MUTUAL OCCURRENCE OF PLANT-SPECIES
A STUDY OF MUTUAL OCCURRENCE OF PLANT-SPECIES
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DOI：
10.2307/1929665
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发表时间：
1956-01-01
期刊：
影响因子：
4.8
通讯作者：
BRAY, JR
中科院分区：
文献类型：
--
作者：
BRAY, JR
植物物种的相互发生有三个层次，即地理的、群落的和种间的。在威斯康辛州的热带稀树大草原上，有两种方法沿着成分梯度对样地进行坐标。在从森林到草原的平滑和连续过渡中，物种振幅沿着这一梯度互锁。种间关联的测量只建议用于包含两个物种的样地的样方。种间吸引和排斥与样地中物种的相对群落发生无关。
Three levels of mutual occurrence of plant species,[long dash]geographic, communal, and interspecific, are recognized. Two methods are used to ordinate plots, sampled in a Wisconsin savanna, along a compositional gradient. The species amplitudes interlock along this gradient in a smooth and continuous transition from forest to prairie. The measurement of interspecific association is suggested only for the quadrats of those plots which contain both species. Most species were found to be independently associated and interspecific attractions and repulsions were not related to the relative communal occurrence of species in plots.