Today in our environmental science lecture, we'll discuss urban green spaces. A recent study in Melbourne found that adding parks and trees to city centers can reduce local temperatures by up to 4 degrees Celsius during heatwaves. This cooling effect occurs because plants release moisture through transpiration, which lowers the surrounding air temperature. Interestingly, the study also noted that the benefits are most significant in densely built areas with limited existing vegetation. However, researchers emphasized that green spaces alone cannot solve climate change; they must be combined with reduced carbon emissions. For city planners, the key takeaway is to prioritize small, scattered gardens over a single large park, as they provide more equitable access for residents across the city.
❓ Согласно лекции, что обнаружило исследование в Мельбурне о городских зелёных зонах?
A. A. Они более эффективны, чем сокращение выбросов углерода.
B. B. Они могут снижать температуру в городе до 4 градусов Цельсия во время волн жары.
C. C. Один большой парк лучше, чем несколько маленьких садов.
D. D. Охлаждающий эффект наиболее силён в районах, где уже много деревьев.
✅ 正确答案
B. They can lower city temperatures by up to 4 degrees Celsius during heatwaves.