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.
❓ 강의에 따르면, 멜버른에서 진행된 연구는 공원의 냉각 효과에 대해 무엇을 발견했습니까?
A. 공원 경계 부근에서 가장 두드러지게 나타난다.
B. 공원이 완전히 잔디로 덮여 있을 때 가장 효과적입니다.
C. 도시 기온을 최대 10도까지 낮출 수 있습니다.
D. 폭염 동안에는 완전히 사라집니다.
✅ 正确答案
It is most noticeable close to the park's boundary.