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 tall buildings that block wind and reduce cooling. A key solution is increasing green spaces, like parks and green roofs, which provide shade and release moisture. However, planting trees alone isn't enough; we must also consider building materials with higher reflectivity. For instance, using white or light-colored roofs can significantly lower surface temperatures. In our case study of Melbourne, researchers found that combining green roofs and reflective pavements reduced peak summer temperatures by up to 4 degrees Celsius. So, the most effective approach involves multiple strategies working together.
❓ Según la conferencia, ¿cuál es la forma más efectiva de reducir los efectos de la isla de calor urbana?
A. Plantar más árboles en los parques de la ciudad.
B. Utilizando únicamente materiales de construcción reflectantes
C. Combinando espacios verdes y superficies reflectantes
D. Aumentar la altura de los edificios para bloquear el viento.