Congo Basin

The Congo Basin is the sedimentary basin of the Congo River. It is located in Central Africa, in a region known as west equatorial Africa. This area is sometimes called simply the Congo. The Congo Basin contains some of the largest tropical rainforests in the world and is an important source of water used in agriculture and energy generation.

Course and drainage basin of the Congo River

The rainforest in the Congo Basin is the largest rainforest in Africa and is second only to the Amazon rainforest in size. It covers 300 million hectares, compared to 800 million hectares in the Amazon. Because of its size and diversity, the forest in the Congo Basin plays a key role in mitigating climate change by acting as a carbon sink. However, deforestation and damage caused by the impacts of climate change may put pressure on the forest. This can, in turn, affect the water patterns in the basin. A study from 2012 showed that changes in rainfall caused by climate change could have negative effects on economic activity in the region.

Eight sites in the Congo Basin are listed on the World Heritage List, with five of these also on the list of World Heritage in Danger (all five are located in the Democratic Republic of the Congo). About fourteen percent of the humid forest in the Congo Basin is protected.

Geology

The Congo Basin is a large dip or low area within the Congo Craton. This makes it a region of newer sedimentary rock sitting inside a much older piece of Earth’s surface. The shaping of this area began in very early times and continued for a long period, leading to the wearing away of much older rock and creating space for new layers to form.

From the time of the Triassic period up to today, sediments have built up in the basin. Evidence from the Jurassic period shows that there was once a freshwater lake environment here, which lasted into the Early Cretaceous. Later, in the Late Cretaceous, the basin connected to a large sea, allowing sea water to flow in. This time left behind many fossils from plants, small animals, and fish. Some of these rock layers also contain diamonds. By the time of the Cenozoic era, rising land blocked any sea connections. The area became wet and marshy, then dry and seasonal, and finally wet again.

Description

History

Pygmy hunter-gatherers in the Central African Republic.

The Congo Basin was first home to the pygmies, who lived in small groups because of the thick forests and rainy weather. Later, the Bantu peoples migrated to the area and created the Kingdom of Kongo.

In the late 1800s, Belgium, France, and Portugal took control of the region. This was decided during the Berlin Conference in 1885. Today, about 80 million people make their home in and around the Congo Basin.

Climate

Aerial view of the Lukenie River as it meanders through the Central Congolian lowland forests

The Congo Basin is very important for the world's climate. It gets a lot of rain, between 1500 and 2000 mm each year. This area has many thunderstorms and the most lightning strikes of any place on Earth. The rain helps grow the second largest rainforest in the world, which plays a big role in the Earth's carbon cycle.

The Congo Basin has two main rainy seasons, from March to May and September to November. Temperatures here are usually between 20 and 30 °C, which are cooler than in the hot deserts like the Sahara and Kalahari. These temperature differences help create wind systems that affect weather far away. Scientists think the region will get hotter due to global climate change, and heavy rains may become more common.

Flora and fauna

The Congo forest is home to many amazing animals, such as the okapi, African forest elephant, pygmy hippopotamus, bongo (antelope), chimpanzee, bonobo, and the Congo peafowl. One of the biggest animals there is the leopard, which is larger than leopards found in open areas because it doesn’t have to compete with other big predators. The forest also has the endangered western lowland gorilla.

Ituri Rainforest

The Congo Basin is the largest forest in Africa, with more than 10,000 different kinds of plants. These humid forests cover a huge area of 1.6 million km². The forest provides important wood, like African teak, which people use for furniture and flooring. About 40 million people live near these woodlands and depend on them for their everyday lives.

Ecology and protection

An industrial logging operation in the Congo Basin. From 2015 to 2019, the rate of deforestation in the Democratic Republic of the Congo doubled.

The forests of the Congo Basin are very important for our planet. They help clean the air by trapping carbon, a gas that can warm the Earth. These forests hold about 8% of all the carbon stored in the world's forests. If these forests are cut down, the trapped carbon could be released into the air.

Scientists have found that these forests, especially areas called peatlands, store a lot of carbon. Protecting these forests is very important, but they face threats from logging and road building. Some groups are working to help protect these forests and support the people who live near them.

National parks

Here are some national parks in the Congo Basin: