Avian community diversity in Platycladus orientalis ancient trees at the Jingfu Temple in Beijing.

During the period from April 2011 to April 2012, the bird community was surveyed at the Jingfu Temple in Beijing with fixed strip method for arborvitae ancient forest, deciduous broadleaved forest and mixed broad-conifer forest. A total of 65 species of birds, belonging to 8 orders and 27 families, were recorded, among which there were 28 species of permanent residents, 23 summer breeders, 5 winter visitors and 9 travelers, and 4 Class -protected wildlife of China; the avifauna was mainly composed of paratactic birds of 44 species (accounted for 67.69%), 9 oriental (accounted for 13.85%) and 12 widespread species(accounted for 18.46%). The dominant species were great tit (Parus major), black- billed magpie ( Pica pica ), aure-winged magpie ( Cyanopica cyana ), large-billed crow ( Covus macrorhynchosw), and red-billed blue magpie ( Urocissa erythrorhyncha ). According to the survey results, the species, quantity, diversity index of birds had different changes, the species and quantity were the smallest, the diversity index and evenness index were the lowest, the dominance index was the highest in arborvitae ancient forest; the species and quantity were the largest, the diversity index was the highest in deciduous broadleaved forest; while the evenness index was the highest in mixed broad-conifer forest, reflecting the most uniform distribution and the most obvious advantage phenomenon of birds in arborvitae ancient forest. The bird functional food group had different composition in different forest types, 4 functional food groups in arborvitae ancient forest of the birds, 5 functional food groups in mixed broad-conifer forest, 6 functional food groups in deciduous broadleaved forest, reflecting the adaptability of different forest habitat for birds.broad-conifer forest, 6 functional food groups in deciduous broadleaved forest, reflecting the adaptability of different forest habitat for birds.