Today in our environmental science lecture, we'll discuss urban green spaces. A recent study in Melbourne found that parks can reduce local temperatures by up to 4 degrees Celsius during heatwaves. However, the cooling effect depends on tree canopy coverage; areas with less than 30% canopy showed minimal benefit. Interestingly, the study also noted that residents living within 500 meters of a large park reported better mental health, but only if the park had water features or dense vegetation. So, while small grassy areas are pleasant, they don't provide the same climate regulation or psychological benefits.
❓ 講義によると、公園が顕著な冷却効果を持つために必要な条件は何ですか？
A. A. 住宅地から500メートル以内でなければならない。
B. B. 樹冠被覆率は少なくとも30%以上であるべきです。
C. C. 水の要素を含める必要があります。
D. D. それは、植生が密集した大きな公園でなければならない。
✅ 正确答案
B. It should have at least 30% tree canopy coverage.