【摘要】 开展鸟类幼体夜栖生境的研究,对于确定物种的生存策略并实施生境保护具有重要的参考价值。四川雉鹑Tetraophasis szechenyii是我国Ⅰ级重点保护物种。利用无线电遥测和直接跟踪的方法,对育雏早期(幼体孵化后大约2周内)雌体与幼体的夜栖生境进行研究。研究发现,在幼体孵化后1周内,雌体与幼体夜栖于地上(n=3);在第2周,它们开始上树夜栖(n=12)。当树栖时,偏好选择鳞皮冷杉-大果红杉林,并使用乔木盖度和坡度较大的地方。与育雏后期的正常夜栖生境相比,本阶段雌体与幼体的夜栖地的乔木盖度更大,但夜栖树胸径较小且靠近道路。基于本研究,建议在生境保护方面应该维持一定区域的乔木盖度,并适当注意保留一些中小型乔木。更多还原

【Abstract】 Studying the roost habitat of young birds is important for determining their adaption to environments and assessing the habitat conservation. The buff-throated partridge Tetraophasis szechenyii is a galliformes species and listed as the category Ⅰ species of nationally protected animals in China. By using the radio-tracking and direct sighting,the roost selection by the females with chicks at early brooding period( with chicks of two week-post-hatch) was investigated. We found that the females with chicks would roost on the ground in the first week( n = 3); and they started to roost in trees in the second week when chicks developed some abilities of jumping( n = 12). The analysis showed the females and chicks preferred Abies squamata-Larix potaninii var. macrocarpa forests. In microhabitat,they selected sites with good tree cover and large degree of slope. Compared to roosts that subsequently selected by all family members,their roosts were characterized by larger tree cover,but smaller tree diameter at breast height and closer distance to the trail. Based on this study,we suggest that the managers should maintain good tree cover in some specific areas and meanwhile protect some small-medium size trees.更多还原