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| Green Infrastructure | |
|---|---|
| Name | Green Infrastructure |
| Type | Urban and ecological infrastructure |
| Country | Global |
| Materials | Vegetation, soils, permeable surfaces, engineered systems |
Green Infrastructure
Green Infrastructure is an integrated approach that uses natural and engineered systems to provide environmental, social, and economic functions in urban and rural settings. It intersects with fields and institutions engaged in urbanism, conservation, climate adaptation, and public health, and is implemented through collaborations among agencies, municipalities, non-governmental organizations, and funders.
The term is defined across documents from United States Environmental Protection Agency, European Commission, World Bank, United Nations Environment Programme, and national ministries such as the Ministry of Housing, Communities and Local Government and the Ministry of the Environment (Finland), situating it between concepts advanced by Frederick Law Olmsted, practitioners at The Nature Conservancy, and standards set by organizations like ISO. Scope includes corridors, networks, and nodes promoted in plans by New York City Department of Environmental Protection, Singapore Urban Redevelopment Authority, and regional authorities including Greater London Authority and Metropolitan Transportation Authority frameworks. Definitions often reference principles from Landscape Architecture Magazine, texts by Ian McHarg, and guidance from Greenroads and LEED consultancies.
Components range from vegetated systems such as parklands managed by bodies like the National Park Service and urban trees planted under programs by United States Forest Service, to engineered features like bioswales used in projects by Department of Transportation (United States), green roofs championed in initiatives from the City of Chicago, and permeable pavements installed in schemes by Port Authority of New York and New Jersey. Other elements include constructed wetlands promoted by Ramsar Convention networks, riparian buffers restored under projects by World Wildlife Fund, and urban forests supported by groups like Arbor Day Foundation. Infrastructure can integrate stormwater wetlands from programs by EPA Region 2 and water reclamation facilities administered by agencies such as Singapore PUB.
Documented services include stormwater management assessed in studies by US Geological Survey, urban cooling effects measured by researchers at NASA, carbon sequestration quantified in reports from Intergovernmental Panel on Climate Change, habitat provision documented by International Union for Conservation of Nature, and public health co-benefits analyzed by teams at World Health Organization. Economic valuation methods follow guidance from The Economics of Ecosystems and Biodiversity and analyses by World Bank economists; benefits accrue to communities served by local authorities including City of Copenhagen and Tokyo Metropolitan Government. Social and cultural services are cited in casework by UNESCO and community development programs run by Habitat for Humanity.
Principles draw on theories from Ian McHarg and practice found in manuals by American Society of Landscape Architects, Chartered Institute of Water and Environmental Management, and planning departments such as New York City Department of City Planning. Core tenets include connectivity promoted in regional plans like Green Belt (United Kingdom), multifunctionality exemplified by projects in Melbourne, and resilience frameworks advanced by 100 Resilient Cities and Rockefeller Foundation initiatives. Design processes reference modeling tools developed by US Army Corps of Engineers, ecological criteria from Society for Ecological Restoration, and performance standards aligned with ISO 14001.
Implementation is governed by regulations and incentives from legislatures such as the European Parliament, national statutes like the Clean Water Act, municipal ordinances in places like San Francisco Board of Supervisors and policy instruments deployed by agencies including Environmental Protection Agency (United States), Environment Agency (England), and Ministry of the Environment and Food of Denmark. Financing mechanisms draw on public–private partnerships used by World Bank projects, green bonds issued in markets monitored by International Capital Market Association, and grant programs from foundations such as the Bill & Melinda Gates Foundation. Cross-sector governance models involve collaborations among utilities like Thames Water, transit agencies like Transport for London, and nonprofit coalitions such as The Trust for Public Land.
Notable examples include High Line (New York City), Cheonggyecheon (Seoul), Millennium Park (Chicago), Mill River Park (Massachusetts), and Bosco Verticale (Milan), alongside stormwater networks in Portland, Oregon, Philadelphia Water Department’s Green City, Clean Waters program, and Singapore’s ABC Waters program led by PUB. Rural applications include landscape restoration projects under Loess Plateau Watershed Rehabilitation Project and watershed protection by Yellowstone National Park partners. International programs feature EU Biodiversity Strategy, China Sponge City initiative, and urban greening driven by municipal plans in Barcelona and Vancouver.
Challenges arise from funding constraints encountered by municipalities such as Detroit and New Orleans, legal and institutional barriers observed in reforms debated in the United States Congress and European Commission policy reviews, maintenance responsibilities highlighted in reports by National League of Cities, and equity concerns raised by United Nations Human Settlements Programme. Technical limitations include performance uncertainty documented by National Research Council studies, climate projections from Intergovernmental Panel on Climate Change that complicate design, and land-use conflicts managed in planning tribunals like the Royal Town Planning Institute.
Category:Environmental engineering Category:Landscape architecture