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.
❓ What did the study in Melbourne discover about urban green spaces?
A. They significantly decreased air pollution in all areas.
B. They lowered temperatures most effectively in areas with mature trees.
C. They had no impact on residents' mental health.
D. They only worked in neighborhoods with grass and small gardens.
✅ 正确答案
They lowered temperatures most effectively in areas with mature trees.