How can green roofs benefit urban environments?

Green roofs provide numerous advantages for urban environments, primarily by lowering energy consumption and improving stormwater management.

In terms of energy efficiency, green roofs act as an additional insulation layer, which helps to reduce heating and cooling demands in buildings. This can lead to decreased reliance on air conditioning during hot months and reduced heating costs in colder months, translating to lower overall energy consumption.

Moreover, green roofs play a significant role in stormwater management. The vegetation and soil on a green roof can absorb rainwater, thereby reducing the amount of stormwater runoff that enters the urban drainage systems. This helps to prevent flooding and minimizes the burden on these systems during heavy rain events. Additionally, the vegetation can filter pollutants from the rainwater, contributing to improved water quality.

The other options do not provide the same level of benefit. For instance, reducing local wildlife would not typically be a goal of green roofs; rather, they can provide habitats for various species. Increasing heat retention is contrary to the purpose of green roofs, as they are designed to mitigate heat islands in urban areas. Lastly, decreasing property values contradicts the positive impact that green roofs have on aesthetics and sustainability, which can actually enhance property values. Thus, the primary benefits of green roofs directly align with