Define "green infrastructure" in stormwater management.

Green infrastructure in stormwater management refers to a range of practices that utilize natural systems and processes to effectively manage stormwater while enhancing water quality and providing additional environmental benefits. This approach incorporates elements such as permeable surfaces, green roofs, rain gardens, and wetlands, which help to mimic natural hydrological processes.

By allowing water to infiltrate into the ground or be absorbed by vegetation, green infrastructure reduces runoff, minimizes flooding, and aids in the filtration of pollutants. This method not only addresses stormwater issues but also contributes to biodiversity, improves air quality, and creates aesthetic values in urban environments. Thus, the emphasis of green infrastructure is on leveraging ecological functions and natural systems rather than relying solely on engineered solutions.

The other options describe different aspects of stormwater management but do not capture the essence of green infrastructure. They focus on technological solutions, regulatory frameworks, or artificial materials, which do not incorporate the holistic, nature-based approach that defines green infrastructure.