Today in our environmental science lecture, we're discussing the impact of urban green spaces. A recent study in Melbourne found that adding parks and community gardens can reduce local temperatures by up to 3 degrees Celsius during heatwaves. This occurs because plants release moisture through transpiration, which cools the air. However, the researchers noted that the size and distribution of these spaces matter. For example, a single large park has a greater cooling effect than several small gardens scattered across the city. The study also highlighted that shaded walkways with trees are more effective than grassy areas alone. Overall, the key takeaway is that strategic planning of green infrastructure is essential for mitigating urban heat, but it requires collaboration between city planners and ecologists.
❓ ¿Qué encontró el estudio en Melbourne respecto a los espacios verdes urbanos?
A. A. Aumentan las temperaturas locales durante las olas de calor.
B. B. Pueden reducir las temperaturas hasta en 3 grados Celsius.
C. C. Solo son efectivos cuando se combinan con pasillos sombreados.
D. D. No tienen un impacto significativo en el calor urbano.
✅ 正确答案
B. They can lower temperatures by up to 3 degrees Celsius.