Method for constructing general grain system model

Abstract

The invention discloses a method for constructing a general grain system model. The method comprises the following steps: setting factors of a comprehensive evaluation index of a grain system as efficiency, profit, sustainability and fairness; respectively setting independent secondary indexes and corresponding index parameters for the elements; obtaining the secondary indexes, and determining index parameters of the four secondary indexes from three groups of producers, operators and consumers of the grain products by using an analytic hierarchy process; according to the secondary indexes and the index parameters, determining a comprehensive evaluation index of the grain system, and establishing a general grain system model. The comprehensive evaluation index of the grain system constructed by the invention comprehensively considers the mutual influence relationship of factors such as efficiency, profit, sustainability and fairness on the operation of the grain system, and according to the grain system model obtained through optimization, on the basis of ensuring efficiency and profit, social benefits such as sustainability and fairness are considered, and the system is more reasonable, effective and stable than an original system.

Description

technical field [0001] The invention relates to the technical field of model building, in particular to a method for building a general grain system model. Background technique [0002] Many recent events have shown that the current global food system (composed of large national or international food producers and distributors) is unstable, mainly because the current food system model prioritizes efficiency (Efficiency) and profitability (Profitability), leading to the problem that "a large number of people (more than 800 million) in the world suffer from hunger" even if there are sufficient food products; those who do not have access to sufficient (affordable and nutritious) food The food insecure population is huge, living in every country and every community on every continent, even in rich countries. [0003] Furthermore, despite the fact that the food system has grown enormously over the decades in terms of productive capacity (to meet the demands of a rising global U...

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Problems solved by technology

[0002] Many recent events have shown that the current global food system (composed of large national or international food producers and distributors) is unstable, mainly because the current food system model prioritizes efficiency (Efficiency) and profitability (Profitability), leading to the problem that "a large number of people (more than 800 million) in the world suffer from hunger" even if there are sufficient food products; those who do not have access to sufficient (affordable and nutritious) food Food insecurity is huge, living in every country and every community on every continent, even in rich countries

[0003] Furthermore, despite the fact that the food system has grown enormously over the decades in terms of productive capacity (to meet the demands of a rising global Up to 80% loss of biodiversity, 80% deforestation, and 70% freshwater use, etc.), lack of necessary attention to "take environmental protection measures"

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