Good morning, everyone. Today, in our environmental science lecture, we will discuss the impact of urban green spaces on city temperatures. A recent study in Melbourne found that parks can reduce surrounding temperatures by up to 4 degrees Celsius during heatwaves. Interestingly, the cooling effect extends about 100 meters beyond the park boundary. However, the effectiveness depends on factors like tree canopy density and water features. For example, areas with dense trees and ponds showed a stronger cooling effect than areas with only grass. The study also noted that nighttime cooling was more significant than daytime cooling, which is crucial for reducing heat stress during summer nights.
❓ Según la conferencia, ¿qué descubrió el estudio en Melbourne sobre el efecto de enfriamiento de los espacios verdes urbanos?
A. A. El efecto de enfriamiento se limita al área del parque en sí.
B. B. El efecto de enfriamiento es más fuerte por la noche que durante el día.
C. C. Las áreas de césped proporcionan más enfriamiento que las áreas cubiertas de árboles.
D. D. El efecto de enfriamiento solo funciona durante las olas de calor.
✅ 正确答案
B. The cooling effect is stronger at night than during the day.