雅思听力

🎧 Listening Transcript

Today in our environmental science lecture, we're discussing the impact of urban green spaces. A recent study in Melbourne found that adding parks and community gardens can reduce local temperatures by up to 3 degrees Celsius during heatwaves. This occurs because plants release moisture through transpiration, which cools the air. However, the researchers noted that the size and distribution of these spaces matter. For example, a single large park has a greater cooling effect than several small gardens scattered across the city. The study also highlighted that shaded walkways with trees are more effective than grassy areas alone. Overall, the key takeaway is that strategic planning of green infrastructure is essential for mitigating urban heat, but it requires collaboration between city planners and ecologists.