Urban green infrastructure, climate resilience and collaborative governance: the role of environmental organisations in Europe and Latin America

This technical report, Urban Green Infrastructure, Climate Resilience and Collaborative Governance: The Role of Environmental Organisations in Europe and Latin America, examines how urban green infrastructure can contribute simultaneously to climate adaptation, biodiversity conservation, sustainable water management, public health and environmental equity. It considers interventions such as urban trees and parks, ecological corridors, sustainable urban drainage systems, green roofs and permeable surfaces, emphasizing that their effectiveness depends not simply on adding vegetation, but on ecological design, connectivity, long-term maintenance and equitable spatial distribution. Based on a structured narrative review of scientific literature, legislation, institutional reports and eleven documented cases from Europe and Latin America, the report identifies six complementary roles for environmental organisations: policy advocacy, citizen science, environmental education, community participation, independent monitoring and evaluation, and demonstration and innovation projects. Their distinctive contribution lies in connecting scientific knowledge, public policy and local communities while providing independent oversight and supporting participatory governance. A central conclusion is that successful urban greening requires three concurrent enabling conditions: stable public planning and financing, sound technical management and preventive maintenance, and active participation by civil society organisations and citizens. The report also stresses that tree planting alone does not constitute ecological restoration; survival, canopy development, soil conditions, water availability and long-term management are more meaningful indicators of success than the number of trees initially planted. Particular attention is given to the EU Nature Restoration Regulation (EU) 2024/1991, which creates new requirements concerning urban green-space area and tree-canopy cover. The report argues that environmental organisations can support implementation through complementary data collection, biodiversity monitoring, shade and canopy mapping, independent verification and participatory processes. It proposes a practical monitoring framework covering green-space extent, tree-canopy cover, accessibility, environmental equity, urban temperature, tree survival, biodiversity, sustainable drainage and meaningful public participation. Overall, the report positions urban green infrastructure as a strategic component of climate-resilient, biodiverse and socially equitable cities, while highlighting collaborative governance as essential for transforming isolated greening initiatives into durable urban restoration policies.