Today in our environmental science lecture, we'll discuss the impact of urban green spaces on city temperatures. Recent studies show that parks can reduce surrounding air temperatures by up to 5 degrees Celsius during heatwaves. However, the effect is not uniform. It depends on factors like park size, vegetation density, and proximity to water bodies. For example, a large park with dense trees and a central pond can create a cooling effect that extends several hundred meters beyond its borders. In contrast, small grassy areas with scattered trees provide only minimal local cooling. Therefore, city planners should prioritize creating a few large, well-designed green spaces rather than many small ones.
❓ According to the lecture, what is the most important factor for maximizing the cooling effect of urban green spaces?
A. A. The number of small parks distributed across the city
B. B. The size and design of the green space, including trees and water
C. C. The distance of the park from residential areas
D. D. The type of grass used in the park
✅ 正确答案
B. The size and design of the green space, including trees and water