Article

On а Model for Drough Risk Reduction in Agriculture

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Abstract

Introduction. The article analyzes the changes in moisture content of the soil in the south of the European territory of Russia (ETR) associated with climate warming. It is shown that both in the foothill and steppe climatic zones there is a tendency to decrease this parameter, which greatly increases the relevance of developing methods to reduce risks in agriculture associated with droughts. A model based on different vulnerability of agricultural crops to this dangerous weather phenomenon is presented, the results of model calculations for the conditions of the steppe zone of the Kabardino-Balkarian Republic (KBR) are presented. Materials and research methods. When conducting research, the Selyaninov hydrothermal coefficient was used as an indicator characterizing the moisture content of the soil. The values of this coefficient were calculated using data from 13 weather stations on the amount of precipitation and air temperature for 1961-2018. The development of a risk reduction model in this paper is considered within the framework of decision theory. As a target in the problem, you can use a function that describes the gain or loss of agriculture. Using this method of choosing an action to reduce risks avoids the formation of a set of actions from which it is necessary to choose the most appropriate one. Research results and their discussion. The results of the calculations carried out in the work showed that the consequence of climate change in the south of the EPR will be a significant deterioration in the conditions for the production of agricultural products. The consequences of such a trend will be extremely negative for agricultural production in the area. As a result of solving the problem, it is possible to determine the optimal structure of crop production from the point of view of the criterion used, taking into account the probability of droughts. As such a criterion, the maximum expected volume of crop production was used, taking into account the impact of droughts. Conclusions. A method has been proposed to reduce the losses of agriculture from droughts, taking into account their different vulnerability to various crops. The model was written in the framework of linear programming, which makes it possible to determine the optimal structure of agricultural production in terms of the criterion used. The method can be used in regions with different production and economic conditions.

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Lyudmila M. Fedchenko, Doctor of Geography, Professor, Chief Researcher, High Mountain Geophysical Institute, Scopus ID: 6602297635, ORCID: 0000-0003-2104-6289, RSCI Author ID: 59651. Е-mail: fedchenkolm@mail.ru
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