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SUMMARY:The role of land for global sustainability and the importance of a
 ddressing food demand trends - Bojana Bajzelj (University of Cambridge)
DTSTART:20141007T193000Z
DTEND:20141007T200000Z
UID:TALK54787@talks.cam.ac.uk
CONTACT:Paulina Rowicka
DESCRIPTION:As land becomes more and more scarce\, the way we use and mana
 ge it becomes increasingly important. Already today\, the conversion from 
 natural vegetation to managed land\, and the continuous use of that land\,
  are the main drivers for biodiversity loss\, and second only to fossil fu
 el use\, for climate change. My work is a part of the Foreseer group\, whi
 ch deals with big picture issues with major resources (energy\, land and w
 ater) and their interconnections. I will present our latest research on th
 e future scenarios for global agriculture and land-use\, which highlights 
 the significance of food demand management\, including changing diets and 
 reducing food waste.\n \nIf we maintain ‘business as usual’\, then by 
 2050 global cropland will have expanded by 42% and GHG emissions from food
  productions by 80% over 2009 levels.  We identified three imperatives for
  reducing these impacts: (1) closing gaps in crop yields in Africa and oth
 er part of the world\, (2) cutting food waste and (3) limiting the consump
 tion of meat and dairy\, to the point which nutritional experts recommend 
 on health grounds.  We then projected the likely results of various combin
 ations of these measures. Yield gap closure alone still showed a GHG incre
 ase of 42% by 2050. Closing yield gaps and halving food waste still showed
  a minor increase of 2% in GHG. When healthy diets were added\, the model 
 suggests that all three measures combined would result in agricultural GHG
  levels almost halving from their 2009 level – dropping 48%.    
LOCATION:Bateman Auditorium \, Gonville and Caius College
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