关键词: 城市鸟类, 鸟类调查, 郁闭度, 相关性分析

Abstract: To improve ecosystem services of urban green spaces and explore habitat factors affecting urban bird diversity, a total of 23 greenspaces with nine different vegetation structures were examined in two campuses of the Northwest A&F University (China) based on urban biotope mapping method. Bird diversity surveys were carried out once a week by point count method and line transect method from November 2018 to April 2019. With difference and correlation analyses, we analyzed the effects of vegetation structure and habitat characteristics on bird diversity. The results showed that bird diversity was affected by canopy density, vertical structure, and species composition of green spaces. The abundance, richness and Shannon index of birds were significantly positively correlated to greenspace area, plant richness and Shannon index of vegetation. The density of birds was significantly negatively correlated to perimeter and area of greenspace. We proposed increasing bird diversity oriented design strategies for plant communityassembly, providing theoretical guidance and practical methods for planning and design of urban greenspaces.

Key words: urban birds,  , bird survey, canopy density, correlation analysis.