环境变化对鸟类种群结构的影响研究

文章将镇江市域内主要优势种树麻雀作为指示种，通过对种群数量、时空分布、不同生境分布、栖息地和森林植被等方面对树麻雀的生态影响进行了调查研究。结果表明：各生境中，分布密度以乡村与城镇最高，农田次之，森林、灌丛及水域最低；植被变化、城乡建设、以及农药、化肥的施用是引起某些鸟类数量变化的重要原因；以鸟类为代表的野生动物与环境关系密切，其分布区域和种群数量的变化以及群落参数变化反映和预示了环境的变化趋势。

Impacts of Environmental Variation on Population Structure of Birds

Taking tree sparrow as an indicator species in the urban areas of Zhenjiang City, this paper discussed the ecologi- cal impacts of population, temporal and spatial distribution, habitat distribution, habitats and forest vegetation of tree sparrows. The results showed that the distribution density of tree sparrow in a descending order are village 〉 town 〉 farm land 〉 forest 〉 shrub 〉 water area. Important reasons for changes in bird population were urban and rural construction, application of pesticide and fer- tilizer, vegetation change, etc. Wild animals such as birds were closely related to the environment, and their changes in distribu- tion area, population and community parameters reflected and foreshadowed the changing trend of environment.