World Food Policy Volume 2, Number 1, Spring 2015 | Page 108

Advancing Health Promoting Food Systems intensive methods applied in industrial agriculture which requires large quantities of non-renewable fossil fuel, fuel-based inputs, such as fertilisers and pesticides, as well as antibiotic overuse in industrial food animal production” (Kickbusch 2010, 22). Some food groups have a greater environmental impact than others, especially industrial-scale ruminant meat production and fish aquaculture schemes established in sensitive marine environments (McMichael et al. 2007; Friel et al. 2009; Jackson et al. 2001). The negative environmental influences on ecosystems and biodiversity include the unsustainable use of water and fossil fuels in food production, methane production as a result of enteric fermentation in beef cattle and sheep, the use of antibiotics and parasiticides, waste discharge, and the destruction of natural habitats (e.g., mangroves). Environmental resource constraints are already exacerbating healthy food availability issues and health inequalities (Ziervogel and Erickson 2010). A decrease in the availability of whole foods, such as fruits, vegetables, results in an increased cost of these foods, creating a barrier for people on a low income to maintain a healthy diet. Corporate supply chains buy out local firms often shifting food production sites and production methods and inputs (e.g., shifting agriculture to areas of relative water security) (Hattersley, Isaacs, and Burch 2013). Current food production practices, reliant on the natural resources, may not be sustainable over the long term: for example, when countries export food they are also exporting the water, nutrients, and other fossil fuel inputs used to produce the food (Whitmee et al. 2015, 25). Another issue relating to industrial agriculture is when local food producers are unable to adapt to the new environmental conditions and unable to operate within the corporate supply chains (Altieri, Funes-Monzote, and Peterson 2011; Craviotti 2015). These circumstances can result in food producers either adopting new organizational models and farming practices or becoming impoverished to the point of leaving their land (Dorward 2013). This second pathway can lead to a spiral of environmental and social impoverishment, which can threaten food availability, accessibility, and cost. This situation is an unfortunate reality in both lower- and higher-income countries (Cribb 2010; Breuer and Kreuer 2011). 2.4 - The climate change challenge Climate changes pose a major direct threat to the establishment and future spread of healthy and sustainable food systems (McMichael et al. 2007; Nelson et al. 2010; Meridian Institute 2011). Sustained heat waves, droughts, and flooding negatively impact food yields, safety, and quality. Climate change is expected to lead to price increases in four of the world’s most important crops— rice, wheat, maize, and soybeans. Irrigated crops will experience large declines in yield (IFPRI 2009). Rice continues to be a crucial food staple in low- and middle-income countries and provides 60 percent of the carbohydrate and plant-based protein consumed by Asian people. There are 200 million rice farms in Asia, according to the International Rice Research Institute (IRRI); and this major livelihood generator and key 107