出版社：International Institute for Applied Systems Analysis
摘要：Africa is already particularly vulnerable to climate variability. In the last
year alone, some 25 million people in sub.Saharan Africa faced
weather-related food crises. And in Southern Africa drought
and adverse weather caused much of the recent hunger
experienced there (Table 1).
But climate change is set to make many of Africa’s problems worse.
Faced with climate change impacts ranging from droughts and heat
waves to windstorms and other weather extremes, scientists argue
that many of Africa’s dry areas will become drier and its wet areas
wetter. It is forecast that by 2020 between 75 and 250 million Africans
will suffer from too much or too little water. In some African countries,
yields from rain-fed agriculture could fall by half by 2020.
