| 李宏群,廉振民,陈存根.2009.陕西黄龙山林区褐马鸡春季夜栖地选择.动物学杂志,44(2):52-56. |
| 陕西黄龙山林区褐马鸡春季夜栖地选择 |
| Roosting-sites Selection of Brown Eared Pheasant in Spring in Huanglong Mountains,Shaanxi Province |
| 投稿时间：2008-10-08 修订日期：2009-01-05 |
| DOI： |
| 中文关键词: 褐马鸡 夜栖地 主成分分析 黄龙山 |
| 英文关键词:Brown Eared Pheasant(Crossoptilon mantchuricum) Roosting-site selection Principal component analysis Huanglong Mountains |
| 基金项目:陕西省林业厅自然科学基金重点资助项目(08-0102);国际泥沙研究培训中心资助项目(2005-01-05) |
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| 中文摘要: |
| 2006年4～6月,在陕西黄龙山林区,对褐马鸡(Crossoptilon mantchuricum)春季夜栖地的选择进行了研究。共记录到22个夜栖地,以夜栖树为中心做一个10 m×10 m样方,测定夜栖地海拔、坡向、坡度、坡位、地貌特征、夜栖树高度和胸径、乔木层盖度、乔木的数量、灌木层盖度、草本盖度、水源距离、人为干扰距离、林缘距离、栖枝高度和栖位上盖度等参数;通过9条样带测定54个随机样方,除栖枝高度和栖位上盖度外,指标相同。结果表明,褐马鸡春季夜栖地多偏向以坡度较大、山坡和山脊、接近水源、远离林边、人为干扰距离较远、乔木盖度和密度较大、栖树胸径较大、灌木层盖度和草本层盖度较小为主要特征的地方。主成分分析表明,前5个特征值的累积贡献率达到72.746%,可以较好地反映褐马鸡春季夜栖地生境特征。根据载荷系数绝对值大小,将褐马鸡春季夜栖地生境选择影响因子分别命名为地形和林下植被因子、气象因子、稳定性因子和水因子。影响褐马鸡夜栖地选择的关键因素是安全、舒适和栖息地转换的方便程度。 |
| 英文摘要: |
| Roosting-site selection of Brown Eared Pheasant(Crossoptilon mantchuricum) was studied between April and June 2006 in Huanglong Mountains(109°38′-110°12′E,35°28′-36°02′N),Shaanxi Province.Total of 22 roosting-sites used by Brown Eared Pheasant were identified and 54 random plots were located along 9 transects crossing the entire study area.Sixteen habitat factors associated with those used sites were examined while the same variables were made in random plots except for roosting height and upper cover.The results showed that roosting-sites were characterized by steeper slope,ridge and slope side,shorter distance to water source,far distance to edge of woods and human disturbance,more density and coverage of trees,bigger diameter of roosting trees,less cover of shrub and grasses.Principal component analysis showed that the first 5 principal components explained 72.746% of the total variance among all habitat variables.According to the absolute value of coefficient,the 5 components were classified as geography and vegetation under forest factor,weather factor,stabilization factor and distance factor.The safety,comfort and foraging convenience are the three key factors for Brown Eared Pheasant to choose roosting-site. |
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