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Mangrove restoration and blue carbon projects are reshaping climate finance, coastal protection and local livelihoods

Mangrove restoration and blue carbon projects are reshaping climate finance, coastal protection and local livelihoods
Mangrove restoration and blue carbon projects are reshaping climate finance, coastal protection and local livelihoods | Photo: GSN

Published on 21 May 2026 at 07:34 GMT

By Editorial Team SDG13

 


Mangrove restoration has moved from the margins of conservation policy to the centre of a wider debate about climate action, coastal protection and the future of green finance. These salt-tolerant forests can store substantial amounts of carbon, reduce exposure to storms and erosion, support fisheries, and underpin livelihoods in coastal communities. Yet the rapid expansion of blue carbon projects has also raised difficult questions about land rights, carbon accounting, investor claims and who benefits when nature becomes a financial asset. Mangrove restoration is now a climate issue, a development issue and a governance issue at once.  

 

Mangroves are among the most productive coastal ecosystems on earth. They trap sediments, stabilise shorelines, provide breeding grounds for fish and crustaceans, and store carbon in both vegetation and waterlogged soils. Their loss can therefore deepen several risks at once, worsening coastal vulnerability, weakening food systems and releasing stored carbon. The International Union for Conservation of Nature reported in 2024 that half of the world’s assessed mangrove ecosystems face a risk of collapse, with climate change, coastal development, pollution and altered freshwater flows among the major pressures. The decline of mangroves is not a narrow environmental concern, it is a direct threat to coastal security.  

 

The current policy interest in mangroves is closely tied to blue carbon, a term used for carbon stored in coastal and marine ecosystems such as mangroves, salt marshes and seagrasses. In practical terms, blue carbon projects seek to protect, restore or improve the management of these habitats while generating measurable climate benefits. A 2025 assessment of 81 blue carbon projects found that they covered roughly 2 million hectares and were linked to projected long-term emissions reductions and removals, although that estimated contribution remained a small fraction of the wider global potential. Blue carbon has become a bridge between conservation goals and climate finance, but that bridge is still being tested.  

 

The appeal is clear. Coastal states facing rising seas and intensifying storms are looking for measures that can reduce risk without relying solely on concrete seawalls or large engineering schemes. Mangroves can attenuate waves, reduce erosion and create a buffer between settlements and the sea, although their protective value varies by local geography, forest width, species composition and storm intensity. For communities dependent on fisheries, timber substitutes, honey, crabs and other local resources, restoration can also support everyday economic resilience when designed around existing livelihoods rather than imposed from outside. A healthy mangrove forest can function as climate infrastructure, food-system support and local insurance at the same time.  

 

This is why mangrove restoration maps onto several of the United Nations Sustainable Development Goals. It connects directly to SDG 13, climate action, because of carbon storage and adaptation benefits. It also relates to SDG 14, life below water, through habitat protection and fisheries recovery, and SDG 1, no poverty, and SDG 8, decent work and economic growth, where coastal livelihoods depend on functioning ecosystems. In places where restoration reduces storm exposure for low-income settlements, there is also a clear link to SDG 11, sustainable cities and communities. Mangrove protection is one of the few environmental interventions with visible implications for climate, biodiversity and poverty reduction at once.  

 

Governments and multilateral lenders have begun to treat mangroves more explicitly as public-interest infrastructure. Indonesia’s Mangroves for Coastal Resilience Project, supported by the World Bank, aims to strengthen mangrove management while improving the livelihoods of communities living in target areas. The project design includes rehabilitation, village-based stewardship and sustainable management measures, reflecting a broader shift away from seeing restoration as a narrow planting exercise. This distinction matters. Research and civil society experience have repeatedly shown that large-scale seedling campaigns can fail when hydrology, species suitability and local use patterns are ignored. Planting trees is not the same as restoring an ecosystem.  

 

That practical lesson is central to the work of organisations such as Wetlands International and the Mangrove Action Project, both of which emphasise ecological restoration rather than simple plantation counts. Their approaches place more weight on tidal flows, sediment dynamics, community participation and the removal of barriers to natural regeneration. This is particularly relevant in deltas and estuaries where mangroves have been degraded not only by cutting, but also by aquaculture ponds, roads, embankments and disrupted water exchange. Effective mangrove restoration begins with the coast’s physical and social realities, not with a target number of seedlings.  

 

Blue carbon finance adds a further layer of opportunity and contention. In theory, carbon credit revenues can help fund restoration, monitoring and community stewardship over time. Blue Ventures, which has worked on community-led mangrove management, has argued that carbon revenues can support locally governed conservation where rights, institutions and benefit-sharing arrangements are credible. New accounting tools and methodologies are also emerging. In 2024, Gold Standard released a methodology for the sustainable management of mangroves, including remote-sensing applications and monitoring approaches designed for restoration projects. The promise of blue carbon is not merely that mangroves store carbon, but that finance might reach landscapes long neglected by conventional funding.  

 

Yet the same financialisation that attracts new capital also creates risks. Carbon credits are only as credible as the assumptions behind them. Questions over additionality, permanence, leakage and baseline setting already affect the wider voluntary carbon market, and they become especially complex in coastal ecosystems shaped by storms, erosion, shifting shorelines and sea-level rise. A project may claim climate benefits from restoration, but those benefits can be hard to measure, may take time to materialise and can be undermined by external pressures beyond the control of local communities. Not every mangrove project that produces a carbon claim necessarily delivers a durable climate benefit.  

 

The politics of ownership are just as important. Many mangrove areas sit within public, customary or contested tenure systems. A carbon project that enters such a landscape may appear technical on paper but become politically fraught in practice if communities lack recognised rights, do not understand contract terms or receive only a narrow share of future revenues. Recent scholarship has warned that blue carbon guidance has not always treated tenure and bundled rights with sufficient depth, despite their importance for legitimacy and fairness. Studies of projects in Kenya have likewise highlighted how perceptions of justice depend not only on money, but also on participation, transparency and control. The credibility of blue carbon depends as much on rights and governance as on tonnes of carbon.  

 

This tension explains why blue carbon is increasingly contested within climate and development debates. Supporters see a practical way to channel resources into ecosystems that deliver public goods, especially where state budgets are limited. Critics argue that offset markets can distract from the need for direct emissions cuts, exaggerate the climate value of uncertain projects or transfer decision-making power away from communities towards consultants, registries and buyers. Both concerns can coexist. A mangrove project can be ecologically valuable and still be poorly suited to offset claims. Conversely, criticism of weak carbon finance does not erase the need for long-term restoration funding. The central question is not whether mangroves matter, but whether finance serves mangroves and communities, rather than the reverse.  

 

The most robust path forward appears to be one that treats carbon as one benefit among several, rather than the only rationale for action. Mangrove restoration is strongest when it is embedded in coastal planning, fisheries management, disaster-risk reduction, land-rights protections and local economic strategies. That approach also better reflects the full public value of mangroves, much of which is not captured in carbon markets. Recent research has underscored that these ecosystems contribute to biodiversity, adaptation and community welfare alongside mitigation. Carbon can help finance restoration, but it should not be allowed to define the entire purpose of restoration.  

 

For policymakers, the implications are concrete. Public funding remains essential, particularly for early-stage planning, tenure clarification, scientific assessment and enforcement against illegal destruction. Standards bodies need to maintain conservative accounting rules and avoid rewarding projects that make climate claims unsupported by ecological realities. Investors and buyers need to scrutinise community governance and benefit-sharing with the same seriousness they apply to projected credit volumes. Local communities, meanwhile, require a meaningful role not only as project beneficiaries but as rights-holders and decision-makers. Mangrove restoration can succeed as climate policy only when ecological integrity and social legitimacy advance together.  

 

The wider significance of mangrove restoration lies in the way it concentrates several questions that are now defining sustainability policy. Can climate finance support adaptation as well as mitigation? Can nature-based solutions protect rights rather than weaken them? Can investors accept slower, more accountable models in ecosystems where social and ecological outcomes are inseparable? Mangroves will not answer these questions alone, but they have become one of the clearest places where those answers are being tested. The future of blue carbon will be judged not only by carbon ledgers, but by coastlines, livelihoods and public trust.  

 

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