四川省九寨沟自然保护区蝶类区系组成及多样性

FUANA AND DIVERSITY OF BUTTERFLIES IN JIUZHAIGOU NATURE RESERVE OF SICHUAN

2002年5～8月和2003年7月期间,对九寨沟自然保护区的蝶类进行了调查研究,共获得蝶类398只,隶属于6科55属78种,蛱蝶科种类最多,凤蝶科最少。对其区系和多样性进行分析,古北种31种,东洋种20种,广布种(古北区和东洋区共有种)27种;分别占总数的39.8%,25.6%和34.6%。表明该地区蝶类以古北种为主体,更多反映出古北区的成分。在不同生境中,落叶阔叶林的物种多样性指数、丰富度和个体数量较高,针叶林物种多样性指数、丰富度和个体数量较低。而相似性分析表明,各生境之间的蝶类相似性系数很低。

Fuana and diversity of butterflies in Jiuzhaigou Nature Reserve in China's Sichuan province were investigated from May to August, 2002 and in July, 2003. In the total collection of 398 specimens, 78 species belonging to 55 genera and 6 families were identified. Greatest number of species was found in the family Nymphalidae, and Papilionidae had the least number of species. Thirty-one species were Palaearctic butterflies, 20 were oriental butterflies and 27 were widely-spread butterflies, accounting for 39.8%, 25.6% and (34.6%), respectively, of the total. It is thus concluded that that main elements of the fauna in this region are Palaearctic. In various habitats the diversity index, richness and individuals of butterfly species were higher in broad-leaved forests than in coniferous forests. Similarity coefficient of butterfly species was very low in different habitats.