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| Tree Cities of the World | |
|---|---|
| Name | Tree Cities of the World |
| Formation | 2018 |
| Founders | United Nations Environment Programme, Food and Agriculture Organization, Arbor Day Foundation, Cities4Forests |
| Purpose | Urban tree management and recognition |
| Region served | Global |
Tree Cities of the World is a global initiative recognizing cities for effective urban tree management and canopy governance. Launched through a partnership among the United Nations Environment Programme, the Food and Agriculture Organization of the United Nations, the Arbor Day Foundation, and Cities4Forests, the program links local action to international frameworks such as the Sustainable Development Goals, the New Urban Agenda, and the Paris Agreement. It builds on antecedents like the European Green Capital Award, the 100 Resilient Cities initiative, and national schemes such as the United States Department of Agriculture urban forestry programs.
Origins trace to collaborations among the United Nations Environment Programme, the Food and Agriculture Organization of the United Nations, the International Union for Conservation of Nature, and the Arbor Day Foundation following dialogues at forums like the Conference of the Parties to the UNFCCC and the United Nations Climate Summit. Early pilots referenced municipal programs from Singapore, Vancouver, Melbourne, Curitiba, and Bogotá, and drew lessons from the Urban Forestry South-East network and the European Federation of City Forests. The initiative scaled through partnerships with World Bank urban programs, the Global Covenant of Mayors for Climate & Energy, and civil society groups including ICLEI – Local Governments for Sustainability and The Nature Conservancy.
Designation requires cities to meet five core standards adapted from municipal practice exemplars such as New York City Department of Parks and Recreation, London Tree Strategy, and Toronto Parks, Forestry and Recreation. Applicants submit evidence on a municipal tree policy, a dedicated budget, a staff lead or office, an inventory or canopy assessment often using methods from NASA remote sensing and the European Space Agency, and an annual work plan aligned with targets in the Sustainable Development Goals and the Sendai Framework for Disaster Risk Reduction. Certification procedures mirror accreditation systems like those of the ISO and reporting protocols akin to Global Reporting Initiative submissions; technical support is provided in partnership with organizations such as FAO and UNEP-WCMC.
Participation spans capitals and secondary cities including Nairobi, Johannesburg, Lagos, Accra, Kampala, Kigali, Addis Ababa; Asian entrants such as Delhi, Mumbai, Dhaka, Kathmandu and Hanoi; European participants like Paris, Rome, Madrid, Berlin, Amsterdam; North American members including New York City, Los Angeles, Chicago, Toronto, Vancouver; Oceania examples such as Sydney, Melbourne, Auckland; and Latin American adopters like São Paulo, Rio de Janeiro, Buenos Aires, Medellín, Quito. Distribution metrics have been analyzed by research centers including World Resources Institute, C40 Cities Climate Leadership Group, and the International Institute for Environment and Development.
Recognized cities report co-benefits consistent with studies from Intergovernmental Panel on Climate Change, World Health Organization, and United Nations Human Settlements Programme, including urban heat mitigation documented in NASA heat-island research, stormwater reduction modeled by the US EPA, air-quality improvement correlated with World Health Organization particulate matter guidelines, and biodiversity enhancement cited by the Convention on Biological Diversity. Economic analyses referencing the Organisation for Economic Co-operation and Development show returns through property-value stabilization and tourism increases linked to urban greening programs profiled in UNEP case studies.
Best practices derive from municipal codes and plans used in jurisdictions such as Seattle Department of Transportation, Portland Parks & Recreation, Singapore National Parks Board, Tokyo Metropolitan Government, and Barcelona City Council. Techniques include canopy mapping with tools developed by Google Earth Engine and Esri, species selection referencing the Royal Horticultural Society and the International Society of Arboriculture, soil and green-infrastructure standards informed by American Society of Civil Engineers guidance, and community engagement models employed by Habitat for Humanity and The Nature Conservancy. Financing mechanisms range from municipal budgets and green bonds as issued by European Investment Bank and World Bank instruments to payment-for-ecosystem-services pilots tested by Conservation International.
Monitoring protocols combine remote sensing from Landsat and Sentinel satellites, field inventories modeled after tools from the USDA Forest Service, and citizen science platforms such as iNaturalist and OpenStreetMap-based mapping. Reporting aligns with indicators under the Sustainable Development Goals and national reporting to entities like the Convention on Biological Diversity; compliance is supported by capacity-building from UNEP regional offices and technical training by Arbor Day Foundation and International Society of Arboriculture chapters.
Critiques echo those leveled at global certification schemes such as the Gold Standard and the Forest Stewardship Council regarding equity, local priorities, and greenwashing. Observers from academic centers at Oxford University, Harvard University, and University of Cape Town note issues including uneven resource capacity between cities like London and Lagos, data gaps highlighted by World Resources Institute analyses, tensions with informal settlement planning documented by Slum Dwellers International, and market-based financing concerns raised in reports by Transparency International. Debates invoke lessons from conservation disputes involving World Wildlife Fund and critiques of top-down models discussed at forums such as the World Urban Forum.
Category:Urban forestry initiatives