Today in our environmental science lecture, we'll discuss urban heat islands. Cities tend to be warmer than surrounding rural areas because concrete and asphalt absorb and retain heat. However, a recent study in Melbourne found that increasing tree canopy coverage by 20% could reduce surface temperatures by up to 4 degrees Celsius during summer afternoons. Interestingly, the effect was strongest in residential areas with low-rise buildings, not in high-density commercial zones. The researchers also noted that green roofs, while helpful, had a smaller impact than street trees. Therefore, city planners are now prioritizing tree planting along main roads and in parks.
❓ Según la conferencia, ¿dónde fue más significativo el efecto de enfriamiento del aumento del dosel arbóreo?
A. A. En zonas comerciales de alta densidad
B. B. En áreas residenciales con edificios de baja altura
C. C. A lo largo de las carreteras principales y en los parques