Green infrastructure is often implemented with a single goal in mind, such as managing storm-water or reducing local ambient heat, and the costs and benefits are often evaluated in the same way.
Green technologies and infrastructure solutions are often implemented with a single goal in mind, such as managing storm-water or reducing local ambient heat, and the costs and benefits are often evaluated in the same way. However, the full net-benefit of green infrastructure development can only be realized by a comprehensive accounting of their multiple benefits. For example, trees filter water, slow runoff, cool local and regional urban heat effects and clean air. Additionally, some adaptation practices provide co-benefits to climate mitigation goals by helping to reduce greenhouse gas emissions. For example, trees absorb and store carbon and can provide shade that reduces man-made cooling needs and hence electricity demand.
Green infrastructure benefits generally can be divided into five categories of environmental protection:
(2) Quality of life,
(3) Public health,
(4) Hazard mitigation, and (5) Regulatory compliance.
Examples of “green” infrastructure and technological practices include green, blue, and white roofs; hard and soft permeable surfaces; green alleys and streets; urban forestry; green open spaces such as parks and wetlands; and adapting buildings to better cope with floods and coastal storm surges. (2011) By the Center for Clean Air Policy.