Global Climate Change, Food Security and the U.S. Food System.

摘要

Climate change influences on the major pillars of food security. Each ofthe four elements of food security (availability,access, utilization,andstability) is vulnerable to changes in climate. For example,reductions in production related to regional drought influence food availability at multiple scales. Changes in priceinfluences the ability of certain populations to purchase food (access).Utilization maybe affected when production zones shift, reducing the availability of preferred or culturally appropriate types of food withina region. Stability of the food supply may be highly uncertain given an increased incidence of extreme climatic events and their influence on production patterns.