Today in our environmental science lecture, we'll discuss urban green spaces. A recent study in Melbourne found that parks can reduce local temperatures by up to 4 degrees Celsius during heatwaves. The key factor is tree canopy coverage, not just grass areas. Interestingly, the cooling effect extends about 30 meters beyond the park boundary. However, researchers noted that this benefit depends on the park's size and the density of trees. For example, small pocket parks with scattered trees had minimal impact, while large connected green corridors provided significant cooling. The study recommends that city planners prioritize creating linked green networks rather than isolated small parks.
❓ Theo bài giảng, yếu tố quan trọng nhất để một công viên giảm nhiệt độ địa phương là gì?