Today we're discussing the impact of urban green spaces. A recent study in Melbourne found that adding parks and community gardens can reduce local temperatures by up to 2 degrees Celsius during summer heatwaves. Interestingly, the effect was strongest in neighborhoods with older trees, not just grass areas. The researchers also noted that residents near these green spaces reported improved mental well-being, though they emphasized that this was based on self-reporting, not clinical measures. However, the study did not find a significant reduction in air pollution levels, contrary to what many assume.
❓ 墨尔本的研究关于城市绿地有什么发现？
A. 他们显著降低了所有地区的空气污染。
B. 在拥有成熟树木的地区，它们降温效果最为显著。
C. 他们对居民的心理健康没有影响。
D. 他们只在有草地和小花园的社区工作。
✅ 正确答案
They lowered temperatures most effectively in areas with mature trees.