Today in our environmental science lecture, we'll discuss urban green spaces. Recent studies show that city parks can reduce local temperatures by up to 5 degrees Celsius during heatwaves. This cooling effect is mainly due to shade from trees and water evaporation from plants. However, the benefits depend on park size and design. Small pocket parks with scattered trees have less impact than large connected green areas. Also, parks with water features like ponds or fountains tend to be cooler than those without. Interestingly, researchers found that even grass lawns alone, without trees, can lower ground temperature by about 2 degrees. So, when planning new residential areas, integrating multiple small green spaces might be more practical than one large park, though the latter provides better cooling for surrounding neighborhoods.
❓ Según la conferencia, ¿qué tipo de espacio verde urbano es más eficaz para reducir las temperaturas locales?
A. A. Un pequeño parque de bolsillo con árboles dispersos
B. B. Una gran área verde conectada con elementos acuáticos
C. C. Un césped sin árboles
D. D. Un parque con solo árboles de sombra y sin agua.
✅ 正确答案
B. A large connected green area with water features