Today in our environmental science lecture, we'll discuss urban heat islands. As cities grow, concrete and asphalt absorb sunlight and re-radiate heat, making urban areas warmer than surrounding rural regions. This effect is intensified by lack of vegetation and waste heat from buildings and vehicles. One solution is green roofs, which can reduce rooftop temperatures by up to 30 degrees Celsius. However, their effectiveness depends on climate and building structure. For instance, in dry regions, irrigation needs may offset benefits. Therefore, planners should consider local weather patterns before implementing such measures.
❓ 講義によると、グリーンルーフの主な限界は何ですか？
A. それらはほとんどの都市に設置するには高すぎる。
B. それらの効果は、地域の気候条件によって異なります。
C. それらは夏の室内温度を上昇させます。
D. 彼らは土壌層の絶え間ない交換を必要とする。
✅ 正确答案
Their effectiveness varies with local climate conditions.