With global warming >3ºC, and with high population growth and agricultural expansion , 1.2 billion Africans are projected to be negatively affected by pollution of drinking water from reduced water quality regulation by ecosystems and 27 million people affected by reduced coastal protection by ecosystems . The number of people affected reduces to 0.4 billion and 22 million, respectively, under a sustainable development scenario with global warming below 2°C . The African tropical forest carbon sink has been more resilient than Amazonia to recent warming but may already have peaked, and this service is predicted to decline with further warming, reducing 14% by the 2030s . This declining carbon storage may be offset by CO2 fertilization  . Climate change is projected to shift the geographic distribution of important human and livestock disease vectors . Changes in rainfall seasonality compounded with land privatisation and population growth may adversely impact nomadic and semi-nomadic pastoralists who follow shifting patterns of greening vegetation .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report