Today, in our environmental science lecture, we'll discuss the impact of urban green spaces on air quality. A recent study in Melbourne measured pollutant levels in parks versus busy streets. The results showed that trees can reduce particulate matter by up to 30% within a 50-meter radius. However, the effect depends on tree species; broadleaf trees are more effective than conifers because they have larger surface areas for capturing particles. The study also found that wind direction plays a crucial role. When wind blows from industrial areas, the benefit decreases significantly. Therefore, city planners should consider wind patterns when designing green corridors.
❓ Según la conferencia, ¿qué factor afecta más significativamente la eficacia de los árboles en la reducción de la contaminación del aire?
A. A. El número de árboles plantados
B. B. El tipo de especie de árbol
C. C. La dirección del viento desde las áreas industriales