论文部分内容阅读
随着世界城市化的快速进程,特别是在发展中国家,城市化对生物多样性的影响也越来越受到人们的重视。城市化过程减少了本土植物的种类,同时增加外来的植物种类。植物分布中本土植物的丰富度沿农村、城乡结合部和城市梯度降低,然而引进的植物物种的丰富性增加,这导致在同一梯度的总植物种类丰富度的增加。城市化对植物物种组成也产生了很大的影响,使植物群落的优势种类沿梯度变化。
With the rapid urbanization in the world, especially in developing countries, the impact of urbanization on biodiversity is receiving more and more attention. The urbanization process reduces the native plant species while increasing the exotic plant species. The abundance of indigenous plants in the plant distribution decreases along the rural areas, with the urban-rural junction and the urban gradient decreasing, however, the abundance of introduced plant species increases, leading to an increase in the abundance of total plant species on the same gradient. Urbanization has also had a major impact on plant species composition, allowing the dominant species of the plant community to vary along the gradient.