Today in our environmental science lecture, we're discussing the impact of urban development on local wildlife. One key example is the city of Melbourne, where planners introduced green roofs on new buildings. These roofs, covered with plants, provide habitats for insects and birds. However, a study found that while green roofs increased biodiversity, they did not significantly reduce the urban heat island effect. Instead, the most effective measure was planting street trees, which lowered ground-level temperatures by up to 2 degrees Celsius. The lecturer emphasizes that future policies should prioritize street trees over green roofs for cooling, but combine both for ecological benefits.
❓ 講義によると、メルボルンの緑の屋根に関する主な発見は何でしたか？
A. A. それらは街路樹よりも暑さを軽減する効果があった。
B. B. それらは生物多様性を高めたが、都市の暑さにはほとんど影響を与えなかった。
C. C. 彼らは地表温度を摂氏2度低下させた。
D. D. それらは昆虫や鳥にとって、期待されていたほど有益ではなかった。
✅ 正确答案
B. They increased biodiversity but had little effect on urban heat.