Today in our environmental science lecture, we'll discuss urban heat islands. A recent study in Melbourne found that parks and green roofs can reduce local temperatures by up to 3 degrees Celsius. However, the effect is strongest within 500 meters of the green area. Interestingly, the cooling benefit is more noticeable at night than during the day, because vegetation releases stored moisture. The study also highlighted that tree canopy coverage is more effective than grass alone. So, for city planners, prioritizing tree planting in densely built areas is key.
❓ Según la conferencia, ¿qué descubrió el estudio en Melbourne sobre el efecto de enfriamiento de las áreas verdes?
A. A. Es más fuerte durante el día.
B. B. Solo funciona dentro de 100 metros de parques.
C. C. Es más perceptible durante la noche y dentro de los 500 metros.
D. D. La hierba es más efectiva que el dosel de los árboles para enfriar.
✅ 正确答案
C. It is more noticeable at night and within 500 meters.