Today we're discussing the impact of urban green spaces. A recent study in Manchester found that adding trees and parks to city centers can reduce summer temperatures by up to 4 degrees Celsius. This is mainly because plants provide shade and release moisture through transpiration. Interestingly, the effect is strongest within 50 meters of the green area, but it diminishes rapidly beyond that. The researchers also noted that vertical gardens on buildings have a smaller cooling effect compared to ground-level parks, though they save space. However, the study warns that increasing green spaces alone won't solve heat issues unless combined with lighter-colored paving materials.
❓ 曼彻斯特的研究揭示了城市绿地的降温效应是什么？
A. A. 垂直花园的降温效果优于地面公园。
B. B. 冷却效应在绿地周边50米范围内最为显著。
C. C. 树木使城市温度平均降低6摄氏度。
D. D. 绿色空间除非与浅色铺装相结合，否则对温度没有影响。
✅ 正确答案
B. The cooling effect is most noticeable within 50 meters of green areas.