画眉的巢址选择

Hwamei Nesting Habitat Selection

画眉巢在研究地区多营造于阔叶林、杉木幼林地和水杉林等生境近地面的灌丛中 ,巢主要以山胡椒叶、麻栎叶、禾本科枯草和细小枯枝等构成 ,距地面高 1 5 6cm(n =1 0 )。用 1 0m× 1 0m样方法 ,对巢址的利用区和对照区进行统计分析表明 ,小生境的参数方面存在显著性差异 (Z =-2 5 9,P =0 0 1 )。 1 0m层的盖度、草本层的高度以及坡位、坡向等地形因素直接影响着画眉对巢址的选择。

Most Hwamei nests were located in bushes close to ground level in broadleaf forest, replanted forest and metasequoia forest. The nests were mainly made of thin stems and leaves of spicebush, robur and gramineous plants. The average height of nests was 15.6?cm (n10) above the ground. Comparison of the Hwamei's nesting habitat to a control area revealed significant differences in microhabitat. The availability of cover at 1?m above ground, the height of herbage and terrain factors such as slope position and aspect have a direct influence on nesting habitat selection in Hwamei.