Good morning, everyone. Today, we're going to discuss the role of urban parks in reducing heat island effects. A recent study in Melbourne compared three types of green spaces: small gardens, medium-sized parks, and large forested areas. The researchers measured air temperature during a heatwave. Surprisingly, the small gardens had a cooling effect of only 1 degree Celsius, while the medium parks reduced temperatures by 3 degrees. However, the large forested areas showed the most significant drop, up to 5 degrees, but only if the tree canopy was dense. The study also noted that water features, such as ponds, did not enhance cooling unless combined with shade.
❓ 講義によると、緑地の冷却効果に関する主な発見は何でしたか？
A. A. 小さな庭園は中規模の公園よりも効果的だった。
B. B. 密な樹冠を持つ大規模な森林地域が、最も大きな冷却効果をもたらした。
C. C. 水景単独でも温度を有意に低下させた。
D. D. すべての緑地が同じ冷却効果を持っていた。
✅ 正确答案
B. Large forested areas with dense canopy provided the greatest cooling.