Today in our environmental science lecture, we're discussing urban green spaces. A recent study in Melbourne found that parks can reduce local temperatures by up to 4 degrees Celsius during heatwaves. Interestingly, the cooling effect is strongest within 50 meters of the park's edge, but it diminishes rapidly beyond that. The study also noted that trees with large canopies are more effective than grass areas alone, because they provide shade and release moisture through transpiration. However, the researchers emphasized that regular maintenance, such as watering during dry periods, is crucial for these benefits to persist.
❓ Según la conferencia, ¿qué encontró el estudio en Melbourne sobre el efecto de enfriamiento de los parques?
A. Es más notable cerca del límite del parque.
B. Funciona mejor cuando los parques están completamente cubiertos de césped.
C. Puede reducir las temperaturas urbanas hasta en 10 grados.
D. Desaparece por completo durante las olas de calor.
✅ 正确答案
It is most noticeable close to the park's boundary.