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The scientific consensus is that global food security will change relatively little in the near-term. 720 million to 811 million people were undernourished in 2021, with around 200,000 people being at a catastrophic level of food insecurity. [12] Climate change is expected to add an additional 8 to 80 million people who are at risk of hunger by ...
Climate change in Africa is reducing its food security. [1] Climate change at the global, continental, and sub-continental levels has been observed to include an increase in air and ocean temperatures, sea-level rise, a decrease in snow and ice extent, an increase and decrease in precipitation, changes in terrestrial and marine biological ...
If climatic factors such as temperature and precipitation change in a region beyond the tolerance of a species phenotypic plasticity, then distribution changes of the species may be inevitable. [13] There is already evidence that plant species are shifting their ranges in altitude and latitude as a response to changing regional climates.
Food security and climate change. A report by the High Level Panel of Experts (HLPE) on Food Security and Nutrition of the Committee on World Food Security. Rome, Italy: Food and Agriculture Organization of the United Nations. Archived from the original on 12 December 2014.
Climate change is projected to negatively affect all four pillars of food security. It will affect how much food is available. It will also affect how easy food is to access through prices, food quality, and how stable the food system is. [111] Climate change is already affecting the productivity of wheat and other staples. [112] [113]
However, climate change may preempt this FAO scenario as a study by the International Union of Forest Research Organizations in 2009 concluded that the stress of a 2.5 °C (36.5 °F) temperature rise above pre-industrial levels could result in the release of vast amounts of carbon [21] so the potential of forests to act as carbon "sinks" is "at ...
Climate change affects agriculture through changes in average temperatures, rainfall, and weather extremes (like storms and heat waves); changes in pests and diseases; changes in atmospheric carbon dioxide and ground-level ozone concentrations; changes in the nutritional quality of some foods; [174] and changes in sea level. [175]
For instance, it can assess the influence of future climate change on crop suitability. [5] It can also be used to project crop yields using the database's information on optimal and absolute crop growing conditions (minimum temperature, maximum temperature, precipitation values, values that define temperature and precipitation extremes). [11]