关键词: 乌梁素海, 浮游细菌, 群落结构, RFLP, 系统发育分析

AbstractThe tree sparrow (Passer montanus) is a dominant species of urban bird communities. With the development of urbanization, the habitats and food resources of tree sparrows are likely to decrease. Can the urban tree sparrow adapt to changes in the urban environment? To answer this question, we studied the habitat use of tree sparrows in eight types of urban areas in Beijing. The results showed that the number of both breeding and wintering tree sparrows decreases with increasing urbanization. The habitat use of tree sparrows, analyzed by discriminant analysis, was positively correlated with the number of brick bungalows, coniferous and broad-leaved trees, and air conditioners, whereas it was negatively correlated with the area of high buildings and hardened roads, and people and automobile flux. This indicates that the tree sparrow is not adaptable to rapid urbanization, although in general it is an adaptable species. Urban planning should take into consideration birds such as tree sparrows.

Key words: Wuliangsuhai Lake, planktonic bacteria, community composition, RFLP, phylogenetic analysis