雅思听力

🎧 Listening Transcript

Today in our environmental science lecture, we'll discuss urban green spaces. A recent study in Melbourne found that parks can reduce local temperatures by up to 4 degrees Celsius during heatwaves. However, the effect depends on the size and vegetation density. Small gardens with scattered trees have minimal impact, while large connected parks with dense canopy create significant cooling. Interestingly, the study also showed that green roofs on buildings, though smaller, can lower indoor energy use by 15%. But the key finding is that accessibility matters: residents living within 300 meters of a park are more likely to use it daily, leading to better mental health outcomes.