Today in our environmental science lecture, we're discussing urban green spaces. A recent study in Manchester found that adding parks and rooftop gardens can reduce city temperatures by up to 2 degrees Celsius during heatwaves. Interestingly, the cooling effect was strongest not in the largest parks, but in areas with many small, interconnected green spaces. This is because they create continuous corridors for air flow. However, the study also noted that trees near buildings can sometimes trap heat if not properly spaced. The researchers recommend a mix of grass, shrubs, and trees, with at least 30% of the area covered by shade to maximize benefits.
❓ 根据讲座内容，曼彻斯特的研究关于城市绿地发现了什么？
A. 大型公园在降低热量方面始终最为有效。
B. B) 小而相连的绿色空间提供最强的降温效果。
C. C) 树木应种植在建筑物附近，以最大限度地提供遮荫。
D. D) 在降低温度方面，草地比灌木丛更有效。
✅ 正确答案
B) Small, connected green spaces provide the strongest cooling effect.