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 4 degrees Celsius during heatwaves. However, the researchers noted that the cooling effect is strongest within 100 meters of the green area. Beyond that distance, the benefit drops sharply. The study also highlighted that vertical gardens on buildings are less effective than ground-level parks for cooling, but they still help with air quality. So, while green roofs are useful, they don't replace the need for larger communal parks.
❓ 講義によると、都市の緑地の冷却効果に関する主な発見は何ですか？
A. A. 緑の屋根は、公園よりも冷却効果が高い。
B. B. 冷却効果は緑地から短い距離に限られる。
C. C. 垂直庭園は温度を下げるのに最も効果的です。
D. D. 熱波の間、公園は都市の気温に影響を与えない。
✅ 正确答案
B. The cooling effect is limited to a short distance from the green area.