气候变化和可持续性对食品安全的影响.pdf

1、The Impact of Climate Change and Sustainability on Food SafetyLee-Ann Jaykus,Ph.D.Distinguished Professor EmeritaNorth Carolina State UniversityRaleigh,NCFood Safety Summit,2024Rosemont,ILMay 9,2024Outline Definitions Examples of Food Safety Impacts Potential Implications Interplay of Sustainability

2、 and Climate Change Conclusions23 Global Climate change-significant variation of average weather conditions over several decades or longer.The longer-term trend differentiates climate change from natural weather variability(World Bank)Global warming-Long-term heating of Earths surface observed since

3、 the pre-industrial period(between 1850 and 1900)due to human activities,primarily fossil fuel burning,which increases heat-trapping greenhouse gas levels in Earths atmosphere(NASA)AnthropogenicDuchenne-Moutienand Neeto.2021.J.Food Prot.84(11):18841897 https:/doi.org/10.4315/JFP-21-141J.Models predi

4、ct mean global warming from 1.5 to 5.88C and a rise in the mean global precipitation of 5 to 15%by 2100Manifestations of Global Climate Change Major climatic factors influenced Temperature Relative humidity Precipitation Sunlight(UV)Climate variability(Global“Weirding”)Increased prevalence of catast

5、rophic weather events Changes to:Sea levels and salinity Crop yields Soil quality Nitrogen deposition Plant diversity Animal(including human)and crop diseasesCattleHumanFoodSoilWaterAnimate/aerosolFeedThe Critical Role of Water in the Farm-to-Fork Continuum6Complexity!Food Safety Implications of Glo

6、bal Climate Change Changes in prevalence,occurrence,and distribution;dynamics of growth and survival;and pathogenic potential,of microbial(bacteria,viruses,parasitic protozoa)pathogens in waters and food intended for human and animal consumptionIts all about competition(changing balance)Examples Glo