Today we're discussing the impact of urban green spaces. A recent study in Melbourne found that adding more trees to city streets can reduce summer temperatures by up to 2 degrees Celsius, but only if the trees are planted close to buildings. However, the same study noted that parks with grass alone have a smaller cooling effect. Interestingly, the researchers also discovered that green roofs on high-rise buildings are most effective for energy savings in winter, not summer. So, for maximum benefit, cities should prioritize street trees near residential areas rather than large distant parks.
❓ Según la conferencia, ¿qué descubrió el estudio en Melbourne sobre los árboles de la calle?
A. A. Son más efectivos para el ahorro de energía en invierno.
B. B. Solo reducen las temperaturas cuando se plantan cerca de edificios.
C. C. Tienen un efecto de enfriamiento menor que los parques de césped.
D. D. Deberían plantarse en grandes parques distantes para obtener los mejores resultados.
✅ 正确答案
B. They reduce temperatures only when planted near buildings.