CUED Publications database

Importance of food-demand management for climate mitigation

Bajželj, B and Richards, KS and Allwood, JM and Smith, P and Dennis, JS and Curmi, E and Gilligan, CA (2014) Importance of food-demand management for climate mitigation. Nature Climate Change, 4. pp. 924-929. ISSN 1758-678X

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© 2014 Macmillan Publishers Limited. Recent studies show that current trends in yield improvement will not be su cientto meet projected global food demand in 2050, and suggest that a further expansion of agricultural area will be required. However, agriculture is the main driver of losses of biodiversity and a major contributor to climate change and pollution, and so further expansion is undesirable. The usual proposed alternative-intensification with increased resource use-also has negative effects. It is therefore imperative to find ways to achieve global food security without expanding crop or pastureland and without increasing greenhouse gas emissions. Some authors have emphasized a role for sustainable intensification in closing global 'yield gaps' between the currently realized and potentially achievable yields. However, in this paper we use a transparent, data-driven model, to show that even if yield gaps are closed, the projected demand will drive further agricultural expansion. There are, however, options for reduction on the demand side that are rarely considered. In the second part of this paper we quantify the potential for demand-side mitigation options, and show that improved diets and decreases in food waste are essential to deliver emissions reductions, and to provide global food security in 2050.

Item Type: Article
Divisions: Div A > Energy
Div D > Structures
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 18:59
Last Modified: 22 Jun 2018 20:36