Abstract:

The present paper investigated and analyzed species and quantities of the birds utilizing plants as total or part of their foods and the bird_feed trees at 21 separating green belts of Beijing urban area during the period between July 2003 and September 2004. Totally 52 birds eating seeds or fruits of plants and 48 bird-feed trees were recorded, and they accounted for 40.63% of birds habitated and 54% of the total trees appeared in the green belts, respectively. Based on the investigation and the analysis, problems existing in afforestation of Beijing urban area were discussed and measures of attracting urban birds through selections and arrangements of tree species were proposed. Therefore, results of the studies would provide theoretical bases for the ecological city constructions of Beijing.

Key words: bird-feed trees, birds eating seeds or fruits of plants, biodiversity, green belt, Beijing