Today in our environmental science lecture, we're discussing urban green spaces. Professor Thompson highlighted a recent study from Melbourne that examined the effects of city parks on local temperatures. The study found that areas with more than 30% tree coverage were, on average, 2.5 degrees Celsius cooler during summer afternoons compared to nearby streets without trees. Interestingly, the cooling effect was strongest within 50 meters of the park boundary. However, the professor warned that simply planting more trees isn't enough; the species and their canopy density also play a crucial role. She recommended focusing on native species that require less water and provide better shade.
❓ 강의에 따르면, 멜버른에서의 연구는 도시 공원에 대해 무엇을 밝혀냈습니까?
A. A. 이들은 공원으로부터 50미터 이내의 지역을 냉각하는 데 가장 효과적입니다.
B. B. 나무 덮개가 50%를 초과할 때만 기온을 낮춘다.
C. C. 그들은 주변 거리 온도에 큰 영향을 미치지 않는다.
D. D. 그들은 더 나은 냉각을 위해 비토착종을 필요로 한다.
✅ 正确答案
A. They are most effective at cooling areas within 50 meters of the park.