Good morning. Today, in our environmental science lecture, we're going to discuss urban heat islands. As you know, cities are often warmer than surrounding rural areas. This is mainly due to concrete and asphalt absorbing heat during the day and releasing it slowly at night. However, one effective mitigation strategy is increasing green spaces, such as parks and rooftop gardens. Interestingly, a recent study in Melbourne found that adding just 10% more tree cover could reduce surface temperatures by up to 2.5 degrees Celsius during summer. But the study also noted that the cooling effect is strongest within 100 meters of the green area. Therefore, planners should distribute small parks evenly rather than concentrating them in one large zone.
❓ Según la conferencia, ¿qué encontró el estudio en Melbourne con respecto a la cobertura arbórea?
A. A. Añadir un 10% más de cobertura arbórea puede reducir la temperatura del aire en 2,5 grados.
B. B. El efecto de enfriamiento de las áreas verdes es más fuerte dentro de los 100 metros.
C. C. Los parques grandes son más efectivos que los pequeños distribuidos.
D. D. El concreto absorbe menos calor de lo que se pensaba anteriormente.
✅ 正确答案
B. The cooling effect of green areas is strongest within 100 meters.