The butterfly diversity of different habitat types in Xiaolongshan forest area,Gansu Province
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Key Words：Xiaolongshan, butterfly, habitat type, diversity
Abstract： The diversity of butterflies in different habitat types in the Xiaolongshan forest area of Gansu Province was surveyed from 2006 to 2008. Six habitat types were classified based on vegetation differences: planted forests, shrub land and secondary forest, inhabited farmland, coniferous-broad leaved forest, broadleaved forest and coniferous forest. A total of 5 365 butterfly specimens were collected and 210 species belonging to 116 genera and 11 families were identified. Species richness, species composition similarity (Jaccard index) and species diversity index (Shannon-Wiener index ‘H’) were calculated for the six habitat types. The species diversity index, species richness and butterfly abundance were highest in shrub land and secondary forests and lowest in planted forests. Species composition was most similar between planted forest and coniferous forest (Jaccard index=0.4194), then coniferous-broadleaved forest and broadleaved forest (Jaccard index=0.2951) with planted forest and shrub land and secondary forest having the least species similarity (Jaccard index=0.0769). The similarity coefficient of butterfly species was very low in different habitats.