Food systems and agricultural resources: Determinants, effects and values
By Gilles TRYSTRAM and Hiam SERHAN
A food system is the way that people and societies are organized to produce and consume food. Food systems have evolved toward a “cohabitation” between, on the one hand, an agro-industrial system that, undergoing globalization, offers standardized foodstuffs and, on the other hand, alternative systems that claim to use short supply chains with socially inclusive and environmentally friendly practices and a concern for resources. Scientific, technological and organizational innovations have affected the evolution of the dominant agro-industrial system and helped develop a diversified, low-price offer of food in compliance with irreproachable safety standards. However these innovations have many effects on health, the environment and natural resources that are a cause of concern. In effect, food accounts for 30% of greenhouse gas emissions; and its carbon footprint is 23%; its impact on water is 23%; and on energy 9%. In addition, 25-30% of processed foodstuffs are wasted; and highly transformed energy-intensive foodstuffs cause health problems. Furthermore, the large distance separating production zones from processing centers and points of consumption has modified the relation of food to: the resources needed to produce it; its functions and value; and the physical and economic access to groceries. Faced with the effects of their activities, food systems are now turning toward the production of offers that protect health and biodiversity, are accessible and culturally acceptable, and optimize the utilization of resources. While the industry has made progress in saving water and energy, and reducing losses of resources, a large share of sustainability is now constructed outside the food chain’s specific finality. The bioeconomics of the value derived from byproducts is apparently making this ecosystem sustainable, since it presents the food industry with the possibility of profiting by producing energy (via materials, molecules or synthons) in competition with fossil fuels.