Today in our environmental science lecture, we're discussing urban green spaces. Recent studies show that parks and community gardens can reduce city temperatures by up to 5 degrees Celsius during heatwaves. However, the key factor isn't just the number of trees, but their distribution. A single large park has less cooling effect than many small green areas spread throughout the city. This is because smaller spaces allow air to circulate more effectively and reach residential zones. Interestingly, rooftop gardens are also beneficial, but they require more maintenance and are less effective for ground-level cooling compared to street-level planting. So, for future city planning, we should prioritize a network of small green pockets rather than relying on one central park.
❓ According to the lecture, what is the most effective way to cool a city during heatwaves?
A. Creating one large central park
B. Distributing many small green areas across the city
C. Building more rooftop gardens
D. Increasing the number of trees in existing parks
✅ 正确答案
Distributing many small green areas across the city