雅思听力

🎧 Listening Transcript

Today in our environmental science lecture, we will discuss the impact of urban green spaces. Recent studies show that parks and community gardens can reduce the urban heat island effect by up to 3 degrees Celsius. However, the key factor is not just the number of trees, but their distribution. For instance, a single large park cools its immediate surroundings, but small, scattered green areas are more effective in lowering temperatures across the whole city. Additionally, green roofs and vertical gardens on buildings contribute significantly, especially in densely built areas. So, when planning sustainable cities, we should prioritize a network of small green spaces over one large reserve.