Today, in our environmental science lecture, we're discussing the impact of urban green spaces on local climate. A recent study in Melbourne found that increasing tree coverage by 20% could reduce surface temperatures by up to 4 degrees Celsius during summer heatwaves. However, this effect is most significant in densely built areas with limited natural shade. The researchers also noted that while parks help with cooling, they require substantial water resources, which is a challenge in drought-prone regions. Therefore, they recommend prioritizing native drought-resistant species for sustainable urban planning.
❓ 根据讲座内容，墨尔本的研究发现了增加树木覆盖率的什么情况？
A. A. 它可以使所有城市地区的温度降低4度。
B. B. 在建筑物稀少且自然遮荫较少的地区，这种方法最为有效。
C. C. 在夏季热浪期间，它能使地表温度降低多达4度。
D. D. 它需要太多水资源，因此不是一个切实可行的解决方案。
✅ 正确答案
C. It reduces surface temperatures by up to 4 degrees in summer heatwaves.