33.160 km²
Area of the Quiçama Biosphere Reserve, from the mouth of the Longa river to the Island of Luanda (UNESCO, 2025).
-37%
Loss of mangrove area in Angola between 1980 and 2006, according to the FAO.
8–10×
Carbon stored per hectare of mangrove compared with an equivalent terrestrial forest.
VM0033
Verra VCS methodology applicable to the restoration of coastal wetlands.
The zones
Each zone presents a distinct combination of pressures, communities and recovery potential. They are described below on the basis of public and official sources.
Mussulo
Sheltered bay
Luanda Province · Mussulo Bay and Palmeirinhas Sandspit
The Mussulo mangroves grow along the shoreline of the bay, which is shielded from the open sea by the Palmeirinhas sandspit. That natural protection creates the calm water and fine sediment mangroves depend on — and it is also what makes the zone so sensitive to any change in the coastline.
It is the most pressured of the three zones. Proximity to Luanda means urban expansion, and Angolan authorities have identified the disorderly construction of salt flats and salt extraction as factors placing direct pressure on the ecosystem. At the same time, the peninsula’s communities depend on the mangrove for fishing and for gathering crustaceans and molluscs: any credible intervention must be built with them, not despite them.
Framework
Mussulo-Cuanza Complex, within the Quiçama Biosphere Reserve
Main pressures
Urban expansion · salt flats · mangrove cutting
Community use
Artisanal fishing, shellfish, subsistence
Distance from Luanda
Adjacent to the capital
Quiçama
Protected area
Luanda Province · Quiçama National Park and UNESCO Biosphere Reserve
Quiçama is the heart of the corridor. The National Park — recognised as a game reserve in 1938 and elevated to National Park in 1957 — extends over roughly 9,600 km² and holds about 120 km of coastline between the Kwanza and Longa rivers. Its vegetation runs through forest zones covered in mangroves, savannah and a system of lagoons.
In 2025 Angola joined the UNESCO World Network of Biosphere Reserves with the Quiçama Biosphere Reserve — 33,160 km² running from the mouth of the Longa river to the Island of Luanda, explicitly covering mangroves, lagoons and nesting grounds for birds and marine turtles. For a blue carbon project this is a decisive institutional framework: protected status and international recognition strengthen permanence — the requirement that carbon conserved today remains conserved decades from now.
National Park
≈ 9,600 km² · established 1957
Biosphere Reserve
33,160 km² · UNESCO, 2025
Coastline
≈ 120 km between the Kwanza and the Longa
Relevance
Permanence and safeguards (CCB)
Kwanza-Longa
Estuaries
Kwanza river estuary and mouth of the Longa river · southern limit of the corridor
Mangroves account for roughly 0.5% of Angola’s vegetation cover, and the country’s largest concentrations are found in two estuaries: the Congo river in the north, and the Kwanza river. It is this second concentration that defines the Kwanza-Longa zone — the stretch where the rivers’ fresh water meets the Atlantic and sediment settles.
Estuarine dynamics are what make this zone particularly interesting from a carbon standpoint: it is in the submerged sediments, not only in tree biomass, that mangroves accumulate most of the carbon they hold. It is also the least urbanised of the three zones, which opens the possibility of working both on conserving existing mangrove and on restoring degraded areas.
Ecosystem type
Estuarine mangrove
National context
One of Angola’s two largest mangrove concentrations
Carbon reservoir
Submerged sediment + biomass
Approach
Conservation and restoration
Why now
Between 1980 and 2006 the FAO estimates that Angola lost roughly 37% of its mangrove area. Across the continent, Africa lost approximately 14% of its mangroves over 25 years. A hectare of mangrove lost is not only biodiversity lost: it is carbon accumulated over centuries in the sediment returning to the atmosphere.
In parallel, Angola has strengthened its climate framework: the country presented its Nationally Determined Contribution (NDC 3.0) and brought Quiçama into the World Network of Biosphere Reserves. Mangrove conservation and national climate policy are, for the first time, pointing in the same direction.
Sources
- Ministério do Ambiente de Angola (MINAMB) — Angola integra o mapa mundial da UNESCO com a nova Reserva da Biosfera Quiçama. minamb.gov.ao
- Instituto Nacional da Biodiversidade e Áreas de Conservação (INBAC) — Sítios Ramsar de Angola, zonas húmidas de importância internacional. inbac.gov.ao
- FAO — The World's Mangroves / avaliações da evolução da área de mangal. fao.org
- UNFCCC — Contribuição Nacionalmente Determinada de Angola. unfccc.int
- Verra — VCS Methodology VM0033, Methodology for Tidal Wetland and Seagrass Restoration. verra.org
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