Today, in our environmental science lecture, we will discuss the impact of urban heat islands. A recent study in Melbourne found that planting more trees in city centers can reduce surface temperatures by up to 4 degrees Celsius during summer afternoons. However, the effect is less significant at night, when heat stored in buildings and roads is slowly released. The study also highlighted that green roofs, though more expensive to install, provide better insulation in winter than street trees. Interestingly, the researchers noted that light-colored pavements reflect more sunlight than dark ones, but they do not cool the air as effectively as trees do.
❓ 講義によると、メルボルンの研究では街路樹について何が明らかになったのでしょうか。
A. A) それらは夏の午後の表面温度を最大4℃低下させます。
B. B) それらは、日中よりも夜間に空気を冷やす効果が高い。
C. C) それらは緑の屋根よりも優れた冬の断熱性を提供します。
D. D) それらは明るい色の舗装よりも多くの太陽光を反射する。
✅ 正确答案
A) They reduce surface temperatures by up to 4 degrees Celsius during summer afternoons.