Climate Change Research ›› 2014, Vol. 10 ›› Issue (4): 235-239.doi: 10.3969/j.issn.1673-1719.2014.04.001

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Updated Understanding on the Impacts of Climate Change on Food Production and Food Security

Xie Liyong1, Li Yue1, Xu Yuxiu1, Zhao Xun1, Song Yanling2, Jiang Tong2, Lin Erda3   

  1. 1 College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China 
    2 National Climate Center, China Meteorological Administration, Beijing 100081, China
    3 Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2014-02-14 Revised:2014-06-05 Online:2014-07-30 Published:2014-07-30

Abstract: Climate Change 2014: Impacts, Adaptation and Vulnerability, the Working Group II contribution to the IPCC Fifth Assessment Report (AR5) was launched in March 2014. This report summarizes the newest peer-reviewed and comprehensive findings from international scientific communities on impacts, sensitivity and vulnerability. The report shows, focusing to food production and food security, the effects of climate change on crop, animals and fishery are evident in most regions of the world. Negative impacts of climate trends have been more common than positive ones. The effects act on not only production process, but also non-production elements, such as food access, utilization, and price stability, which varies among different regions. Studies have documented a large negative sensitivity of crop yields to extreme daytime temperatures. Evidence since AR4 confirms the stimulatory effects of CO2 in most cases and the damaging effects of elevated tropospheric ozone on crop yields. More adaptation is helpful to overcome the negative effect of temperature increasing, and reduce food losses. More observational evidence is needed on the effectiveness of adaptation at all levels of the food system.

Key words: IPCC WGII, Fifth Assessment Report (AR5), climate change, food production, food security

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