Natural environment is home to some of Africa’s most important ecosystems, and experts say protecting them is key to the country’s future. From the mangrove forests of the Niger Delta to the rainforests of Cross River and the wetlands of the Sahel, these “green treasures” provide food, clean water, climate regulation, and habitats for thousands of plant and animal species. Environmental scientists warn that deforestation, pollution, and climate change are putting pressure on these sites. Yet they also remain Nigeria’s strongest defense against flooding, desertification, and biodiversity loss. In this report, 10 vital ecological sites highlighted across Nigeria that are playing a critical role in saving our environment and supporting millions of livelihoods
The Niger Delta Wetlands are the largest wetland in Africa and the third largest globally, covering about 70,000 sq km across 9 states. Ecologically, they contain the largest mangrove forest in Africa, which stores carbon, filters water, prevents coastal erosion, and serves as a breeding ground for fish, birds, and marine life. The area hosts over 60% of Nigeria’s plant species and 40% of animal species. It supports more than 30 million people through fishing, agriculture, and trade. It is also the center of Nigeria’s oil and gas industry, producing about 90% of national crude oil revenue and driving the country’s economy
Cross River National Park is one of Africa’s most biodiverse rainforests and a global conservation hotspot. It protects over 4,000 plant species and rare wildlife including gorillas, chimpanzees, forest elephants, and the Nigeria-Cameroon chimpanzee. The dense forest acts as a major carbon sink and regulates rainfall and climate for the region. Economically, the park drives eco-tourism, attracting researchers and visitors to its waterfalls and primate habitats. It supports surrounding communities through non-timber forest product collection, conservation jobs, and research projects, providing livelihoods while promoting sustainable use of forest resources and biodiversity protection.
Gashaka-Gumti National Park is Nigeria’s largest protected area, spanning over 6,400 sq km of montane forest, savanna, and grassland along the Cameroon border. Ecologically, it serves as a critical watershed for the Benue River and acts as a wildlife corridor for lions, chimpanzees, buffalo, leopards, and rare bird species. Its highlands harbor unique plants and provide climate regulation. Economically, the park has strong eco-tourism potential through hiking, birdwatching, and wildlife viewing. Surrounding communities benefit from beekeeping, sustainable forest products, and regulated farming. It also regulates water flow, supporting agriculture and livelihoods for thousands of people downstream
Hadejia-Nguru Wetlands are a Ramsar site in the Sahel and one of West Africa’s most important floodplains. Ecologically, they provide a critical breeding and stopover ground for millions of migratory birds from Europe and Asia. The seasonal floods recharge groundwater, sustain floodplain vegetation, and support fish spawning. Over 1.5 million people depend on the wetlands for dry-season farming, fishing, and livestock grazing. Crops like rice, wheat, and vegetables grown here make it a major food basket for northern Nigeria, while the wetland’s resources drive local markets and trade across the region.
Yankari Game Reserve is the largest and most popular wildlife park in Nigeria, covering 2,244 sq km of Guinea savanna. Ecologically, it is a key West African savanna ecosystem and refuge for elephants, lions, baboons, roan antelope, hippos, and over 350 bird species. The famous Wikki Warm Spring, with constant 31°C water, provides a year-round water source for wildlife and visitors. Yankari is northern Nigeria’s top eco-tourism destination. It generates revenue through park fees, hotels, guided tours, and local crafts. The reserve creates jobs for surrounding communities and supports conservation education, research, and sustainable tourism in Bauchi State.
Old Oyo National Park spans 2,512 sq km across Oyo and Kwara States and protects a mix of Guinea savanna, riparian forest, and rocky outcrops. Ecologically, it is important for conserving antelopes like roan, kob, and bushbuck, as well as over 300 bird species, primates, and rare plants. The park also safeguards watersheds that feed into the Ogun and Oyan Rivers. Economically, it supports eco-tourism, research, and environmental education. Surrounding communities benefit from park employment, sustainable harvesting of non-timber forest products, and tourism revenue, while the park helps control desert encroachment and promotes climate stability in the southwest.
Okomu National Park protects one of the last major lowland rainforests in southwest Nigeria, covering about 200 sq km. Ecologically, it is a critical habitat for forest elephants, endangered white-throated guenons, chimpanzees, duikers, and over 150 bird species. The dense forest plays a vital role in rainfall regulation, carbon storage, and watershed protection for Edo and Delta States. Site generates revenue through eco-tourism, research, and guided forest walks. It is bordered by large rubber plantations and supports nearby communities with non-timber forest products, park jobs, and conservation-related income, linking biodiversity protection to local livelihoods
Kainji Lake National Park covers 5,340 sq km and includes Kainji Lake, the Borgu Game Reserve, and Zugurma sector across Niger and Kwara States. It protects Guinea savanna, woodland, and a major freshwater ecosystem. The lake and wetlands support aquatic life, waterbirds, and large mammals like hippos, crocodiles, antelopes, and primates. It also serves as a key watershed. Park drives fisheries and eco-tourism, while the adjacent Kainji Dam provides hydropower for the national grid. It supplies water for irrigation and agriculture in Niger, Kwara, and Kebbi States, supporting millions of livelihoods downstream.
Lake Chad ecosystem, this park protects Sahelian wetlands critical for migratory birds, fish, and wildlife like gazelles and jackals. It supports floodplain agriculture and fishing communities facing climate stress.
Ecological sites shows that environmental health is directly tied to national stability and prosperity. Degradation from deforestation, oil pollution, and climate change threatens food security, water supply, and biodiversity, while also increasing vulnerability to flooding in the south and desertification in the north. Loss of mangroves, rainforests, and wetlands would disrupt fisheries, farming, and carbon storage, pushing more communities into poverty. Conversely, healthy ecosystems provide climate regulation, disaster mitigation, and livelihoods for millions, meaning that failure to protect them will raise humanitarian costs and undermine economic growth.
Green treasures from the Niger Delta mangroves to the Sahelian wetlands and Cross River rainforests are irreplaceable assets for both people and nature. They support over 30 million livelihoods, regulate climate, and house globally significant biodiversity. Despite pressure from pollution and unsustainable use, these sites remain the country’s strongest natural defense against environmental crises. Their continued survival is essential if Nigeria is to meet food, water, and climate goals while preserving cultural and ecological heritage for future generations.
Government, communities, and partners should strengthen enforcement of conservation laws, expand community-based eco-tourism and sustainable NTFP programs, and restore degraded areas through reforestation and mangrove planting.
