Global environmental change gec including land degradation loss of biodiversity changes in hydrology and changes in climate patterns resulting from enhanced anthropogenic emission of greenhouse gas emissions will have serious consequences for food security particularly for more vulnerable groups growing demands for food in turn affect the global environment because the food system is a source of greenhouse gas emissions and nutrient loading and it dominates the human use . Food security and global environmental change amazonde ingram john ericksen polly liverman diana bucher. Most research linking global environmental change and food security focuses solely on agriculture either the impact of climate change on agricultural production or the impact of agriculture on the environment eg on land use greenhouse gas emissions pollution and or biodiversity important though food production is many other factors also need to be considered to understand food security a recent international conference on environmental change and food security bridging science . Part i food security food systems and global environmental change chapter 1 food systems and the global environment an overview 3 diana liverman and kamal kapadia chapter 2 the value of a food system approach 25 polly ericksen beth stewart jane dixon david barling philip loring molly anderson and john ingram chapter 3 lessons learned from international assessments 46 stanley wood polly . Global environmental change gec represents an immediate and unprecedented threat to the food security of hundreds of millions of people especially those who depend on small scale agriculture for
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