Characteristics of Fagus hayatae Community along Altitudinal Gradient in Micangshan Nature Reserve, Sichuan

Abstract:

The aim was to understand the characters of Fagus hayatae community in different habitats. The species composition, flora character, life form, importance value and species diversity along altitudinal gradient in Micangshan National Nature Reserve, Sichuan were studied. The results showed that species number in F. hayatae community was different with increment of elevation. The north temperate distribution was dominant in F. hayatae community, and the proportion of dominant floristic distribution had positive correlation with elevation. The main life-form spectrum was phanerophytes. The important value of F. hayatae in tree layer increased along altitude. The diversity indexes of F. hayatae community in middle altitude were lower than those in high and low altitudes, showing the characters of less species and low diversity. Therefore, the characteristics of F. hayatae community had obvious difference in different altitudes.