Today in our environmental science lecture, we'll discuss urban green spaces. A recent study in Melbourne found that increasing tree canopy cover by 20% could reduce summer temperatures by up to 2 degrees Celsius. However, the researchers emphasized that the placement of trees matters more than the total number. For instance, trees planted along streets and around buildings provide the greatest cooling effect, while those in large parks have less impact on nearby residential areas. The study also noted that maintenance costs are often underestimated, but the long-term health benefits for residents, such as reduced heat-related illnesses, justify the investment.
❓ According to the lecture, what did the study in Melbourne highlight as the most important factor for reducing urban temperatures?
A. A. Increasing the total number of trees planted
B. B. Choosing tree species that grow quickly
C. C. Locating trees strategically near streets and buildings
D. D. Reducing maintenance costs for green spaces
✅ 正确答案
C. Locating trees strategically near streets and buildings