Good morning, everyone. Today, we're going to discuss the role of urban parks in reducing heat island effects. A recent study in Melbourne compared three types of green spaces: small gardens, medium-sized parks, and large forested areas. The researchers measured air temperature during a heatwave. Surprisingly, the small gardens had a cooling effect of only 1 degree Celsius, while the medium parks reduced temperatures by 3 degrees. However, the large forested areas showed the most significant drop, up to 5 degrees, but only if the tree canopy was dense. The study also noted that water features, such as ponds, did not enhance cooling unless combined with shade.
❓ Según la conferencia, ¿cuál fue el hallazgo principal respecto al efecto de enfriamiento de los espacios verdes?
A. A. Los jardines pequeños fueron más efectivos que los parques medianos.
B. B. Las grandes áreas forestales con dosel denso proporcionaron el mayor enfriamiento.
C. C. Las características de agua por sí solas redujeron significativamente la temperatura.
D. D. Todos los espacios verdes tuvieron el mismo efecto de enfriamiento.
✅ 正确答案
B. Large forested areas with dense canopy provided the greatest cooling.