Today in our environmental science lecture, we're discussing urban green spaces. A recent study in Melbourne found that increasing tree canopy coverage by just 10% can reduce local temperatures by up to 2.5 degrees Celsius during summer heatwaves. However, the study also noted that the placement of trees matters more than the total number. Trees planted along streets and near buildings provide the most significant cooling effect, while those in large parks have less impact on surrounding residential areas. Additionally, the researchers emphasized that maintenance costs, such as watering and pruning, are often underestimated by city planners.
❓ According to the lecture, what did the Melbourne study find about urban trees?
A. A) Adding more trees in parks is the most effective way to cool cities.
B. B) The location of trees is more important than the total number of trees.
C. C) Tree planting costs are usually overestimated by city planners.
D. D) A 10% increase in tree canopy can reduce temperatures by 5 degrees.
✅ 正确答案
B) The location of trees is more important than the total number of trees.