Today in our environmental science lecture, we're discussing urban green spaces. Recent studies show that parks and community gardens can reduce city temperatures by up to five degrees Celsius. This cooling effect occurs because plants release moisture through transpiration, and shade from trees blocks solar radiation. However, the benefits aren't just physical. Access to green areas has been linked to lower stress levels and improved mental health among residents. Interestingly, the size of the green space matters less than its distribution. Even small pocket parks, if evenly spread across neighborhoods, can have a significant impact on both temperature regulation and community well-being. So, city planners should prioritize creating many small green spots rather than one large central park.
❓ According to the lecture, what is the key finding about urban green spaces?
A. A. Large central parks are more effective than smaller ones.
B. B. The distribution of green spaces is more important than their size.
C. C. Green spaces only help reduce temperatures in large cities.
D. D. Plants release moisture mainly at night to cool the air.
✅ 正确答案
B. The distribution of green spaces is more important than their size.