Today, in our environmental science lecture, we're discussing the impact of urban green spaces. A recent study from the University of Melbourne found that increasing tree coverage in city centers can reduce local temperatures by up to 2.5 degrees Celsius during summer. This cooling effect is mainly due to shade and evapotranspiration. Interestingly, the study also showed that parks with a mix of native and exotic trees attract more bird species than those with only native trees. However, the researchers emphasized that maintenance costs are often underestimated, especially for watering young trees in dry periods. They recommend using drought-resistant species to lower long-term expenses.
❓ Según la conferencia, ¿qué descubrió el estudio de la Universidad de Melbourne sobre los espacios verdes urbanos?
A. A) La cobertura arbórea puede reducir las temperaturas urbanas en más de 3 grados Celsius.
B. B) Los parques con solo árboles nativos sustentan la mayor diversidad de aves.
C. C) El efecto de enfriamiento de los árboles se debe principalmente a la sombra y la evapotranspiración.
D. D) Los costos de mantenimiento suelen estar sobreestimados para árboles jóvenes.
✅ 正确答案
C) The cooling effect of trees is mainly due to shade and evapotranspiration.