Nature-based climate solutions work when the ecosystem fits the place, local people share in the decisions, and the project protects nature for the long term. They can store carbon, reduce flood and heat risk, protect water, and support wildlife. They cannot replace the work of cutting fossil-fuel emissions.
That last sentence matters. A tree-planting promise can sound easier than changing an energy system. It is not permission to keep emitting. It is one useful part of a larger climate plan.
What counts as a nature-based solution?
The International Union for Conservation of Nature defines these solutions around three jobs: protect, manage, or restore ecosystems while addressing a social challenge and supporting both people and biodiversity. The definition rules out projects that count carbon while treating the ecosystem or nearby community as an afterthought.
Working now does not mean every project works everywhere. The Intergovernmental Panel on Climate Change reports strong potential across forests and other natural ecosystems, but it also warns that drought, fire, climate change, poor species choices, and weak long-term protection can reduce the result.
Five solutions and the job each does best
| Solution | Best fit | What it can deliver | What can go wrong |
|---|---|---|---|
| Protect existing forests | Land where intact forests are under pressure | Keeps stored carbon in place while protecting habitat and water systems | Protection on paper can fail without enforcement, local support, and fire planning |
| Restore inland wetlands and peatlands | Places where natural water movement can be repaired | Stores carbon, holds water, supports wildlife, and can reduce flood damage | A project can fail when it ignores hydrology or drains another area |
| Restore mangroves, salt marshes, and seagrass | Coasts where the ecosystem naturally belongs | Stores coastal carbon, buffers waves, and provides nursery habitat | Hard shorelines, pollution, and rising seas can leave the ecosystem nowhere to move |
| Improve soil and farm management | Working farms and grazing land | Can improve soil health, water retention, resilience, and carbon storage | Results vary by soil, climate, crop, measurement method, and how long the practice continues |
| Reforest damaged land | Previously forested land where natural recovery or planting fits | Builds habitat and carbon storage over time | The wrong species, a single-species plantation, or planting in a natural grassland can damage biodiversity |
Protection often comes before planting
A mature forest already holds carbon, habitat, soil, and water relationships that a new seedling does not. Protecting what remains can prevent an immediate loss while restoration begins the slower work of rebuilding what was damaged.
Reforestation still matters. The honest version includes the time it takes, the chance of fire or drought, the survival rate, the species used, and who will care for the land after the launch photos are gone.
Wetlands do more than store carbon
Wetlands can slow floodwater, filter water, support fish and birds, and reduce damage to communities. Coastal systems such as mangroves and salt marshes can also buffer waves. The IPCC describes these added benefits as a major reason ecosystem protection and restoration belong in climate-resilience planning.
The site still decides the result. Restoring water flow in the right place can revive a wetland. Digging a pond and calling it restoration does not make it one.
Three questions to ask before supporting a project
- Does this ecosystem belong here? A credible project explains the native habitat, water, soil, and species rather than leading with the number of trees.
- Who makes the decisions and receives the benefits? Local and Indigenous rights, knowledge, livelihoods, and consent are part of the work, not a public-relations detail.
- Who measures and protects the result? Look for a baseline, a clear method, public progress reporting, and a plan for fire, drought, invasive species, or project failure.
A good project can answer all three questions plainly. If the only number is how many seedlings went into the ground, the evidence is not finished.
Where to go next
See how communities are restoring nature for the people side of the work. If you want a household starting point, use our guide to living more sustainably without changing everything at once.