矢尖蚧在天竺桂叶上不同尺度空间分布格局研究

Spatial Distribution Pattern of Unaspis Yanonensis(Kuwana)at Different Scales

本文研究了天竺桂(Cinnamomum pedunculatum)叶片上矢尖蚧[Unaspis yanonensis(Kuwana)]不同尺度的空间分布格局.结果表明:天竺桂每叶矢尖蚧个体数的频数分布呈现幂函数递减的趋势;在天竺桂树冠尺度上,北面矢尖蚧的数量比南面矢尖蚧的数量更多;在叶片尺度上,矢尖蚧空间分布类型为聚集分布;在叶片内部尺度上,矢尖蚧在叶中的个体数多于其叶尖和叶基.最后,根据矢尖蚧在不同尺度的空间分布规律,提出了一些矢尖蚧的防治建议.

Spatial distribution of Unaspis yanonensis on Cinnamomum pedunculatum at different scales were studied. The results showed that： the frequency distribution of scale insects per leaf decreased in a power-law trend; at the tree canopy scale, there were more U. yanonensis numbers in the north parts than in the south parts; at the leaf scale, the distribution types of U. yanonensis were clumped distributions ; at the intra-leaf scale, there were more U. yanonensis individuals in the middle leaf portions than in leaf bases or in leaf tips. Finally, according to the distribution of U. yanonensis, some suggestions on the control of this pest were provided.