The Vertical Spatial Pattern of Bird Community in Spring Season in Pinus yunnanensis Forests in Zixi Mountain Area

The vertical spatial distribution patterns of bird communities in Pinus yunnanensis forest at Zixi Mountain, Yunnan Province were observed from March to April of 2010 with sample plot method. The observation showed totally 45 bird species, belonging to 23 families, 5 orders, were recorded. The bird perches in the Pinus yunnanensis forest showed obvious vertical spatial variation in bird communities, there were also distinct changes in the bird community structure, species diversity and evenness among bird communities. The clustering analysis showed that the bird communities could be divided into 6 groups by the perching level inside the tree canopies, namely the upper tree canopy habitat group(G1), middle and lower tree canopy habitat group(G2), the trunk habitat group(G3), shrub habitat group(G4), herbaceous layer habitat group(G5) and the ground habitat group(G6).