The focus of projected climate change impacts has been almost exclusively on agricultural production, yet climate change could have substantial impacts on the distribution and availability of wild- harvested food plants in Africa . Non-cultivated species in Africa are vulnerable to current and future climate changes, with widespread changes in woody plant cover already observed . Evidence about the impacts of climate change on individual wild food species is less consistent. Communities in the Kalahari  and Zimbabwe  report growing scarcity of wild foods  perceived to be, at least in part, due to drought and climate change. Shea tree  nuts provide fats and oils for the diets of many rural populations in west Africa. In Burkina Faso, global warming of 3ºC is projected to reduce area of suitable habitat for the shea tree by 14% . In southern Africa, 40% of native, wild- harvested food plant species are projected to decrease in geographic range extent at 1.7℃ global warming with range reductions for 66% of species projected for 3.5℃ .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report