Abstract: With the rapid development of world economy, urbanization is being advanced with an unprecedented speed. Some characteristics of urban ecosystem, such as fragmentation and serious human disturbance, can impact the distribution of wild animals, and thus, the studies on urban biodiversity and the applications of ecological theories in urban planning are of significance in preserving urban ecosystem equilibrium. In this paper, the impacts of urbanization on the distribution of birds were reviewed from the perspectives of urbanization extent, patch characters of urban green space, and urban type. It was suggested that to study the effects of urban structural characters on the distribution of birds from local and landscape scales, and to strengthen the study at population level, would more benefit the establishment of reasonable plan for urban bird conservation.

Key words: Trace element, Hair, Qinba mountains, Environmental geochemistry