Open AccessResearch on Model Optimization of Food system Dynamics based on SD-SOP
Author(s) -
Yuan He,
Shu Fang,
Youwei Wang,
Jian Dai
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1865/4/042070
Subject(s) - sustainability , system dynamics , profitability index , food systems , function (biology) , environmental economics , computer science , food security , process (computing) , risk analysis (engineering) , business , marketing , economics , agriculture , artificial intelligence , ecology , finance , evolutionary biology , biology , operating system
With the development of productive forces and the existence of an effective food system, the problem of world hunger is gradually being solved. However, on the one hand, 821 million people in the world are still malnourished, and on the other hand, the waste of food is shocking. The comparison of these two situations shows that the current food system is seriously unfair. With the development at the expense of the natural environment, there is also uncertainty about whether people can enjoy food in a sustainable, healthy and safe way. Therefore, our group was asked to do some optimization research on the food system. In order to better simulate the operation of the food system. First of all, we design a food system model based on the system dynamics model, which includes four subsystems: economy and trade, environmental health, social production and politics. and the basic operation system of the system is formed on the basis of many variables in these four fields. Then, based on the variables in the grain system, we summarize four aspects of measuring the characteristics of the grain system, namely, profitability, efficiency, fairness and sustainability, and summarize 11 quantifiable evaluation system indicators. Then, the analytic hierarchy process is used to determine the weight and evaluation function of each index in the comprehensive evaluation system. Finally, using the goal programming model, taking the fairness and sustainability indicators as constraints, the minimum value of the system comprehensive evaluation function is used to optimize the food system dynamics model. After optimization, we get the final SD-SOP model and determine that China’s optimized grain system will be realized in 2030.