Today in our environmental science lecture, we're discussing the impact of urban green spaces. A recent study in Melbourne found that adding more parks and trees in city centers can reduce local temperatures by up to 3 degrees Celsius during heatwaves. Interestingly, the effect was strongest not in large parks, but in small, shaded courtyards with water features. The study also showed that residents living within 200 meters of such green areas reported a 15% decrease in stress levels. However, the researchers noted that the cooling effect was limited to the immediate vicinity, and recommended integrating green corridors throughout the city rather than concentrating on a few large areas.
❓ 墨尔本的研究揭示了城市绿地的哪些情况？
A. A. 大型公园对城市具有最大的降温效果。
B. B. 带有水景的小型阴凉庭院在降低温度方面最为有效。
C. C. 绿色空间并未影响居民的压力水平。
D. D. 冷却效应遍及整座城市。
✅ 正确答案
B. Small shaded courtyards with water features were most effective at reducing temperature.