Climate change is no longer a distant threat; it is a defining challenge of our time. Rising global temperatures, intensifying cyclones, floods, droughts, heatwaves, sea-level rise, and biodiversity loss are already reshaping economies, ecosystems, and human lives. While technological innovations and engineered infrastructure play important roles in addressing climate change, global evidence increasingly demonstrates that working with nature-rather than against it-is one of the most effective, sustainable, and cost-efficient pathways forward. This is where Nature-Based Solutions (NbS) emerge as a critical pillar of climate action.
What AreNature-Based Solutions?Nature-Based Solutions are actions that protect, restore, and sustainably manage natural ecosystems in ways that address societal challenges such as climate change, disaster risk, food insecurity, and water scarcity-while simultaneously enhancing biodiversity and human well-being. Forests, mangroves, wetlands, rivers, soils, grasslands, and urban green spaces are not merely natural assets; they are powerful climate allies.
NbS do not replace technological or engineered solutions. Rather, they complement grey infrastructure by leveraging natural processes to deliver multiple co-benefits-often at lower cost and with greater long-term sustainability.
Why Nature-Based Solutions Matter for Climate Change: Nature-Based Solutions address climate change through two fundamental pathways: mitigation and adaptation. Climate Mitigation: Reducing Greenhouse Gas Emissions: Natural ecosystems play a vital role in regulating the Earth’s climate by absorbing and storing carbon dioxide. Forests, mangroves, peatlands, wetlands, grasslands, and healthy soils act as major carbon sinks. When these ecosystems are degraded or destroyed, stored carbon is released into the atmosphere, accelerating global warming. Conversely, protecting and restoring ecosystems enhances carbon sequestration.
Global estimates indicate that Nature-Based Solutions could deliver approximately 37 percent of the climate mitigation required by 2030 to keep global warming within the targets of the Paris Agreement. In carbon terms, NbS interventions worldwide could remove or reduce 5 to 11.7 billion tonnes of CO? equivalent per year by 2030, depending on the scale and quality of implementation. This represents a substantial share of global mitigation potential and highlights how NbS can effectively complement energy transition and technological solutions.
Climate Adaptation: Reducing Climate Risks and Impacts: Beyond mitigation, NbS are essential for climate adaptation-helping societies cope with the impacts that are already unavoidable. Mangroves reduce storm surge and coastal erosion, wetlands absorb excess floodwater, forests stabilize slopes and prevent landslides, and urban green spaces reduce heat stress and manage stormwater. A global review of 109 NbS projects focused on climate adaptation found that around 88 percent reported positive outcomes for both climate resilience and ecosystem health. Many documented significant improvements in water regulation, reduced disaster losses, and enhanced ecosystem services for communities.
Common and Proven Examples of NbS: Nature-Based Solutions are already being implemented across diverse landscapes and sectors: Mangrove restoration provides coastal protection while supporting fisheries and local livelihoods. Reforestation and afforestation enhance carbon capture, restore degraded land, and create rural employment. Wetland conservation and restoration reduce flood risks, purify water, and support biodiversity. Urban green roofs, parks, and street trees cool cities, reduce air pollution, and improve mental health. Climate-smart and agroecological agriculture improves soil health, boosts yields, and strengthens food security.
These solutions demonstrate how NbS deliver multiple benefits simultaneously, climate, biodiversity, and socio-economic gains.
Global experience strongly supports the effectiveness of Nature-Based Solutions: A global database has identified 575 nature-based carbon offset projects across 55 countries, reflecting the growing integration of NbS into climate finance and policy frameworks. Why Nature-Based Solutions Are Especially Important for Bangladesh: For climate-vulnerable countries like Bangladesh, Nature-Based Solutions are not optional-they are imperative. The country faces recurrent cyclones, floods, riverbank erosion, salinity intrusion, heat stress, and rapid urbanization. NbS provide practical, locally feasible responses: Mangrove restoration along the coast reduces cyclone impacts and storm surges. Wetlands, haors, and floodplains absorb floodwaters and regulate river flows. Forests and soil sequester carbon while protecting biodiversity. Urban green and blue spaces help reduce heat stress and waterlogging in cities such as Dhaka and Chattogram. NbS also align closely with Bangladesh’s Nationally Determined Contributions (NDCs), Delta Plan 2100, and the Sustainable Development Goals (SDGs).
To scale up Nature-Based Solutions effectively, governments and development partners must embed them at the core of development planning, not treat them as pilot initiatives. This requires integrating NbS into national and local climate policies, strategies, and public budgets, ensuring community-driven and inclusive approaches, and empowering local and Indigenous communities. Targeted investment in sustainable agriculture, forestry, and fisheries can strengthen climate resilience and livelihoods, while urban planning should incorporate green and blue infrastructure to reduce risks and improve livability. Long-term financing, strong monitoring systems, and continuous knowledge sharing are essential to ensure impact, accountability, and scalability.
According to the global NbS policy tracker, 1,306 NbS-related policies now exist across 190 countries, highlighting the rapid mainstreaming of NbS into climate strategies worldwide. Nature-Based Solutions are no longer theoretical concepts, they are proven, scalable, and transformative tools for addressing climate change. Global evidence shows that NbS reduce climate risks, restore degraded ecosystems, sequester significant amounts of carbon, enhance biodiversity, and generate socio-economic benefits.
For Bangladesh and other climate-vulnerable nations, NbS represent a pragmatic pathway-one that reduces disaster risks, safeguards livelihoods, and builds resilience using locally available natural systems. By investing in nature today, we can create a future that is safer, more resilient, and in harmony with the ecosystems upon which all life depends.
The writer is a climate activist & humanitarian worker