Today, in our environmental science lecture, we will discuss the impact of urban green spaces on city temperatures. Recent studies have shown that parks and gardens can reduce local temperatures by up to 5 degrees Celsius during heatwaves. This cooling effect is mainly due to shade provided by trees and the process of evapotranspiration, where plants release water vapor. However, the effectiveness depends on the size and density of the green area. Small, scattered gardens have a limited impact, while large, connected parks can create a 'cool island' that benefits surrounding neighborhoods. So, city planners should prioritize creating larger, interconnected green spaces rather than many tiny ones.
❓ What does the lecturer say about the cooling effect of urban green spaces?
A. A) It is most effective when green spaces are small and scattered.
B. B) It can reduce temperatures by up to 10 degrees Celsius.
C. C) It depends on the size and connectivity of the green areas.
D. D) It works only during the winter months.
✅ 正确答案
C) It depends on the size and connectivity of the green areas.