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.
❓ マンチェスターの研究は、都市の緑地の冷却効果について何を明らかにしましたか？
A. A. 垂直庭園は地上レベルの公園よりも効果的に冷却する。
B. B. 冷却効果は緑地から50メートル以内で最も顕著である。
C. C. 樹木は都市の気温を平均6℃低下させる。
D. D. 緑地は、明るい舗装と組み合わせない限り、気温に影響を与えない。
✅ 正确答案
B. The cooling effect is most noticeable within 50 meters of green areas.