Today, in our environmental science lecture, we'll discuss the impact of urban green spaces. A recent study in Melbourne found that increasing tree cover by just 10% can reduce local temperatures by up to 2.3 degrees Celsius during summer. However, this effect is strongest when trees are planted near buildings, not just along streets. The study also highlighted that parks with a mix of native and non-native species attract more bird diversity, but native trees require 30% less water. Interestingly, the researchers noted that while residents preferred large lawns for recreation, these areas contributed least to cooling, compared to shaded walkways or community gardens.
❓ Según la conferencia, ¿qué descubrió el estudio de Melbourne sobre el efecto de aumentar la cobertura arbórea en un 10%?
A. A. Reduce las temperaturas principalmente cuando los árboles se plantan a lo largo de las calles.
B. B. Reduce las temperaturas locales hasta en 2,3 grados Celsius en verano.
C. C. Aumenta la diversidad de aves de manera más efectiva que los árboles nativos.
D. D. Requiere un 30% más de agua que las especies no nativas.
✅ 正确答案
B. It reduces local temperatures by up to 2.3 degrees Celsius in summer.