雅思听力

🎧 Listening Transcript

Today, in our environmental science lecture, we will discuss the impact of urban development on local wildlife. A key point is that green spaces, such as parks and gardens, can serve as vital habitats for many species. However, the fragmentation of these areas due to roads and buildings often isolates animal populations, leading to reduced genetic diversity. For example, a study in London found that hedgehog populations declined significantly in areas with high road density. To mitigate this, some cities have introduced wildlife corridors, which are strips of vegetation that connect isolated habitats. These corridors have been shown to increase animal movement and genetic flow. Therefore, urban planners must prioritize maintaining connectivity between green spaces.