Abstract
At present, the contradiction between the high efficiency of the world’s food production and environmental pollution is becoming increasingly prominent. In order to study the related issues of the world’s food production efficiency and sustainability, this paper uses the method of entropy weight to extract 5 indicators as the environmental pollution assessment model from the environmental pollution of agricultural production, scores 10 major agricultural production countries in the world, and obtains the environmental pollution index. Subsequently, the DEA model was established for these countries, the environmental pollution index was included into the production efficiency system as an unexpected output, the Malmquist index was established to describe the changes in agricultural production efficiency from 2010 to 2018, and the cluster analysis was carried out for it. Subsequently, the OSL and Tobit models were used for regression of the influencing factors. In addition, the comprehensive evaluation model of efficiency and sustainability was established by controlling the amount of fertilizer used, which was applied in different countries.
Highlights
With the continuous development of the current world economy, food production is becoming more and more efficient, and the food produced is enough to feed every individual in the world
821 million people still suffer from the food hunger crisis worldwide [1, 2]. e current food system is well illustrated by the increasing global environmental disruption to produce adequate food, which includes a series of consumption such as greenhouse gas emissions, deforestation, and agricultural irrigation [3,4,5,6,7]
It can effectively eliminate the interference of external environment and random errors on efficiency calculation and can evaluate the world food production efficiency well
Summary
With the continuous development of the current world economy, food production is becoming more and more efficient, and the food produced is enough to feed every individual in the world. We first provide an explanation for the production efficiency and sustainability of the current global food system based on the use of the entropy weight method. Two methods, OLS and Tobit, were used to analyze the factors affecting the efficiency of global food production by using fertilizers as hubs to connect the environmental pollution assessment model with the food production efficiency model, respectively, and agricultural efficiency and sustainability in representative regions were summarized, and the model was applied to different developing and developed countries, fully illustrating model stability and fitness. Is low efficiency and high consumption mode of fertilizer application increases the cost of agricultural production and causes extremely bad environmental pollution. It increases the content of nitrogen in the soil. We use histogram and radar chart to show the score results; in the histogram of Figure 2, the higher the area, the higher the environmental pollution index and the more serious the agricultural pollution
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