Today in our environmental science lecture, we're discussing 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 2 degrees Celsius during heatwaves. Interestingly, the effect is strongest when green areas are connected, forming corridors rather than isolated patches. However, the researchers noted that maintenance costs are often underestimated, and they recommend using native plants to lower water usage. Also, community involvement is crucial for long-term success, as residents tend to protect spaces they help design.
❓ 墨尔本的研究揭示了城市绿地的哪些情况？
A. A) 当它们被种植在孤立的斑块中时，效果最为显著。
B. B) 在热浪期间，它们能使城市温度降低多达2度。
C. C) 它们比传统园林景观需要更多的水。
D. D) 对大多数城市而言，它们过于昂贵，难以维护。
✅ 正确答案
B) They can lower city temperatures by up to 2 degrees during heatwaves.