Today in our environmental science lecture, we're discussing urban green spaces. A recent study in Melbourne found that adding more parks and trees can reduce local temperatures by up to 4 degrees Celsius during heatwaves. However, the researchers noted that the benefit is only significant when the green area covers at least 30% of a neighborhood. In smaller patches, the cooling effect is minimal, and the cost of maintenance often outweighs the environmental gains. The study also highlighted that native plants require less water and attract more local wildlife, making them a better choice than exotic species for sustainable city planning.
❓ 강의에 따르면, 도시 녹지 공간이 지역 기온을 크게 낮추기 위해 필요한 조건은 무엇인가요?
A. A. 녹지 구역에는 다양한 외래 식물이 포함되어야 한다.
B. B. 녹지 공간은 수변에 위치해야 한다.
C. C. 해당 지역의 최소 30%는 녹지 공간으로 덮여 있어야 한다.
D. D. 유지보수 비용은 환경적 편익보다 낮아야 한다.
✅ 正确答案
C. At least 30% of the neighborhood must be covered by green areas.