›› 2018, Vol. 30 ›› Issue (3): 489-497.DOI: 10.3969/j.issn.1004-1524.2018.03.19

• Agricultural Economy and Development • Previous Articles     Next Articles

Comprehensive evaluation on China's food import security based on super efficiency DEA model

WANG Ruifeng1,2, LI Shuang1,*, JIANG Yubo1   

  1. 1. College of Economics and Management, Northeast Agriculture University,Harbin 150030,China;
    2. College of Economics and Management, Northeast Petroleum University,Daqing 163000,China
  • Received:2017-06-26 Online:2018-03-20 Published:2018-03-21

Abstract: On the basis of defining the connotation of grain and grain import safety, this paper analyzes the influencing factors of China's grain import safety from the aspects of grain quantity, grain quality, grain price, grain trade, national economy and ecological environment. Based on the super-efficiency DEA, this paper evaluates the safety situation of China's grain imports from 1992 to 2015, and tests the significance of the indicators by constructing t statistics to overcome the defect of the super-efficiency DEA model which can not judge whether the indexes are significant. The results show that China's grain import security is in a safe state during the period from 1992 to 2015. Grain imports have little impact on grain price security and ecological security in China, and have a greater impact on quantity safety, quality and safety, trade security and economic security.

Key words: food, import, DEA model, security evaluation

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