邛崃山系大熊猫和小熊猫生境选择的比较

采用随机样方法，对邛崃山系同域分布的大熊猫与小熊猫的生境选择行为进行了比较研究。在13个生境因子48个项目中，植被、食物、水源、外界干扰、地形等概括了两种熊猫生境的主要特征。在对生境的利用上，两种熊猫均喜欢选择离水源较近、兽类和人为干扰程度较小、竹子生长发育较好的位于山体中、上部的原生针阔叶混交林或针叶林中的生境；大熊猫更喜好选择东南坡向、坡度相对较小、郁闭度相对较大、林中倒木和树桩等较少的竹林，小熊猫则更喜好选择南坡或西坡、坡度相对较大、郁闭度相对较小、林中倒木和树桩等较多的竹林。两种熊猫在生境利用上的差异可能是其同域分布长期共存的原因之一。

COMPARISON OF HABITAT SELECTION OF GIANT PANDAS AND RED PANDAS IN THE QIONGLAI MOUNTAINS

The habitat selection of the sympatric species, giant panda and red panda, in the Qionglai Mountains was comparatively studied Among 48 parameters in 13 environmental factors studied, vegetation, food, water source, outer disturbance, and topography were the main factors influencing the habitat selection of both panda species Both panda species tended to select habitats in the primary needle leaf broadleaf mixed forests or needle leaf forests located in the middle or the higher part of the Qionglai Mountains with water source close by, relative less mammal and human disturbance, and finer bamboo growth However, giant panda preferred to select habitats facing south or east with relatively gentle slopes, higher canopy, and less fallen logs and stumps while red pandas tended to choose habitats facing south or west with relatively deep slopes, lower canopy, and more fallen logs and stumps The difference in habitat selection perhaps is one of the reasons for the long term co existence of both panda species