Today, in our environmental science lecture, we'll discuss urban green spaces. A recent study in Melbourne found that parks can reduce local temperatures by up to 4 degrees Celsius during heatwaves. However, the researchers noted that this cooling effect depends on the size of the park and the density of trees. For instance, small pocket parks with scattered trees have minimal impact, while large connected green corridors can create a significant cooling breeze. Interestingly, the study also revealed that green roofs on buildings are more effective at reducing indoor energy use than at lowering street-level temperatures. So, when planning cities, we should prioritize establishing connected green networks rather than isolated small gardens.
❓ Según la conferencia, ¿qué descubrió el estudio en Melbourne sobre los espacios verdes urbanos?
A. A. Todos los parques reducen las temperaturas por igual durante las olas de calor.
B. B. Los techos verdes son más efectivos para reducir las temperaturas a nivel de calle.
C. C. Los grandes corredores verdes conectados pueden enfriar significativamente el área.
D. D. Los pequeños parques de bolsillo con árboles densos tienen el mayor efecto de enfriamiento.
✅ 正确答案
C. Large connected green corridors can significantly cool the area.