陕西黄龙山自然保护区褐马鸡秋季觅食地选择

2006年10～11月,在陕西黄龙山自然保护区对褐马鸡觅食地选择进行研究.分析表明:褐马鸡喜欢生活在针阔混交林;海拔1 200～1 400 m;小于10°的平缓坡;中坡位;山沟;乔木盖度50%～80%,乔木高度小于10 m,乔木密度小于0.10个/m2;灌丛盖度小于30%,灌丛高度大于1.5 m,灌丛密度小于1个/m2;草本盖度小于30%,草本高度小于16 cm;隐蔽级小于10%;水源距离小于300 m;林边距离小于100 m;人为干扰距离100～300 m的环境.主成分分析表明,褐马鸡觅食地选择的主要因子有4种,依次为:地形及草本植物因子(海拔、地理性、坡位、草本盖度和高度)、隐蔽因子(灌丛盖度、密度和高度以及隐蔽级)、干扰因子(水源距离、人为干扰距离、林边距离和植被类型)、食物因子(乔木直径、高度、密度和盖度).

Autumn Foraging-sites Selection of Brown-eared Pheasant in Huanglong Mountain Nature Couservation,Shaanxi Province

The autumn foraging habitat selection of brown-eared pheasant(Crossoptilon mantchuricum) in Huanglong Mountain nature conservation,Shaanxi Province,is studied,from October to November in 2006.The analyses show that foraging habitats are characterized by coniferous and broadleaved forest,altitude(1 200～1 400 m),slope degree(<10°),mid slope location,gully,arboreous cover(50%～80%),arboreous hight(<10 m),arboreous density(<0.1/m2),and shrub cover(<30%),and shrub height(>1.5 m) and shrub density(<1/m2),and herbaceous cover(<30%),herbaceous height(<16 cm),sheltering class(<10%),distance to water source(<500 m),edge of woods(<100 m) and human disturbance(100～300 m).The main component analysis shows that there are four factors affecting the habitat selection of brown eared-pheasant.They are classified as factors of geography and herbage(altitude,cover and average height of herbs,geographical characters and slope location),sheltering factor(cover,height and density of shrub and sheltering class),disturbance factor(distance to water source,edge of woods and human disturbance and vegetation type),and food factor(average diameter,cover,average hight,and density of arbores).