雅思听力

🎧 Listening Transcript

Today in our environmental science lecture, we're discussing urban green spaces. Professor Thompson highlighted a recent study from Melbourne that examined the effects of city parks on local temperatures. The study found that areas with more than 30% tree coverage were, on average, 2.5 degrees Celsius cooler during summer afternoons compared to nearby streets without trees. Interestingly, the cooling effect was strongest within 50 meters of the park boundary. However, the professor warned that simply planting more trees isn't enough; the species and their canopy density also play a crucial role. She recommended focusing on native species that require less water and provide better shade.