On the other hand, human factors contain more complicated reasons which are different from nations and industries. Generally, several main reasons can be concluded as mismanagement on ecosystems causes the dramatic decline in some species which eventually leads to the reduction of food supply (Slaght, 2012). Along with the regional industrialization, the exportations of fruit and vegetables to developed countries displace local staple crops, which indirectly impact the undeveloped areas suffering further from the malnourishment (Slaght, 2012). Besides, food waste during the transportation and processing, retail and home stages comprises a large proportion both in developed and developing countries (Godfray, et al, 2010).