Today in our environmental science lecture, we're discussing urban green spaces. A recent study in Melbourne found that adding more parks and trees in city centers can reduce local temperatures by up to 3 degrees Celsius during summer heatwaves. This cooling effect is mainly due to shade and evapotranspiration. Interestingly, the study also noted that while green roofs are effective for insulation, they have less impact on street-level temperature compared to street trees. The researchers recommend prioritizing tree planting along busy roads and near residential buildings, as these areas benefit most from reduced heat exposure. However, they warned that water availability is a key constraint in drier climates, so sustainable irrigation systems must be considered.
❓ Según la conferencia, ¿qué descubrió el estudio en Melbourne sobre los árboles de calle en comparación con los techos verdes?
A. A) Los árboles de calle son más efectivos para reducir las temperaturas a nivel de calle.
B. B) Los techos verdes proporcionan un mejor aislamiento, pero también reducen el calor de la calle.
C. C) Ambos son igualmente efectivos para reducir las temperaturas urbanas.
D. D) Los techos verdes son más beneficiosos para edificios residenciales.
✅ 正确答案
A) Street trees are more effective at lowering street-level temperatures.