The Green and Blue Axis (Eixo Verde e Azul, EVA) is an inter-municipal green corridor project connecting the municipalities of Sintra, Oeiras, and Amadora through a 15-kilometre green ecological axis along the Jamor River (Ref 2). It aims to renaturalize the river, improve water quality, and control flooding while promoting sustainable mobility through pedestrian and cycling routes (Ref 5). The project also enhances public access to green spaces and cultural heritage sites, such as the Queluz National Palace (Ref 6). EVA supports the Lisbon Metropolitan Area’s regional strategy for climate change adaptation, risk prevention, and low-carbon economy (Ref 4). Funded by the European Regional Development Fund and municipal budgets, the project has an overall investment of €11 million (Ref 1). EVA exemplifies inter-municipal cooperation, overcoming policy conflicts to achieve shared environmental, social, and economic goals, making it a model for integrated territorial development (Ref 4). The project’s long-term impact includes reduced carbon footprint and increased territorial cohesion.
Overview
Nature-based solution
- Blue infrastructure
- Rivers/streams/canals/estuaries
- Parks and urban forests
- Green corridors and green belts
Key challenges
- Climate action for adaptation, resilience and mitigation (SDG 13)
- Climate change adaptation
- Green space, habitats and biodiversity (SDG 15)
- Green space creation and/or management
- Regeneration, land-use and urban development
- Regulation of built environment
- Promote natural styles of landscape design for urban development
- Water management (SDG 6)
- Flood protection
- Improvements to water quality
- Health and well-being (SDG 3)
- Creation of opportunities for recreation
Principal problems in Functional Urban Area (FUA)
- Climate-Related Hazards
- River flooding
- Environmental Degradation
- Poor water quality
- Land use and Socio-economic change
- Unequal availability and access to public green spaces
Key priorities
Focus
Project objectives
Implementation activities
Climate-focused activities
Climate change adaptation:
- Restore rivers and other fresh water bodies to reduce flood or drought risk
Main beneficiaries
- Local government/Municipality
- Citizens or community groups
Governance
Management set-up
- Government-led
Type of initiating organisation
- Regional government
- Local government/municipality
Participatory approaches/ community involvement
- Co-planning (e.g. stakeholder workshops, focus groups, participatory mapping)
- Deliberative decision-making processes (e.g., consensus building, deliberative polling)
- Dissemination of information and education
Details on the roles of the organisations involved in the project
Project implemented in response to ...
Type of enablers
Financing
Total cost
Source(s) of funding
- Public local authority budget
- Public national budget
- Public regional budget
- EU funds
Type of funding
- Earmarked public budget
- Direct funding (grants, subsidies, or self-financed projects by private entities)
Non-financial contribution
Impacts and Monitoring
Environmental impacts
- Climate change
- Enhanced carbon sequestration
- Expected enhanced carbon sequestration
- Water management and blue areas
- Improved water quality
- Expected improved water quality
- Increased protection against flooding
- Expected increased protection against flooding
- Green space and habitat
- Increased green space area
- Achieved increased green space area
- Increased conservation or restoration of ecosystems
- Expected increased conservation or restoration of ecosystems
- Increased ecological connectivity across regeneration sites and scales
- Achieved increased ecological connectivity across regeneration sites and scales
Economic impacts
- More sustainable tourism
- Expected more sustainable tourism
Socio-cultural impacts
- Social justice and cohesion
- Improved social cohesion
- Expected improved social cohesion
- Improved liveability
- Achieved improved liveability
- Health and wellbeing
- Gain in activities for recreation and exercise
- Achieved gain in activities for recreation and exercise
- Improved physical health
- Expected improved physical health
- Improved prevention of respiratory problems
- Expected improved prevention of respiratory problems

Information about this nature-based solution was collected as part of the