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 3 degrees Celsius during summer heatwaves. Interestingly, the cooling effect was strongest within 100 meters of the green area, but it diminished quickly beyond 500 meters. The study also noted that vertical gardens on buildings had a smaller impact than ground-level parks, because they often lack water. However, the researchers emphasized that even small green spaces, like street planters, contribute to mental well-being, though they don't significantly affect temperature.
❓ Согласно лекции, каков был основной вывод об охлаждающем эффекте городских зеленых зон?
A. A. Это было наиболее сильным в пределах 100 метров от зелёной зоны.
B. B. Это было более значимо для вертикальных садов, чем для парков на уровне земли.
C. C. Это происходило только ночью.
D. D. Это не оказало влияния на температуру на глубине более 500 метров.
✅ 正确答案
A. It was strongest within 100 meters of the green area.