Authors: Yu. I. Vasilyev, S. Yu. Turko, M. V. Nazarova, Yu. V. Chernyavskiy
Federal Scientific Center for Agroecology Integrated Land Reclamation and Protective Afforestation of Russian Academy of Scienses, Volgograd, Russia E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract. Purpose and objectives. The stated objective of the study is the evaporation process with an open soil surface under different conditions of precipitation and moisture accumulation before the plant vegetation. Materials and methods. Theoretical calculations were given and methods of mathematical modeling of the process of changing moisture reserves in the soil layer were applied. In field studies, evaporation was taken into account against the background of the existing (actual) vegetable screen (winter wheat). Research results. An algorithm has been developed to describe the dynamics of moisture reserves in the soil, taking into account the time factor, or rather, their daily change. The algorithm is built on the principle of sequential posting of events. All settlement work was carried out in a step-by-step, automatic mode (daily) for the entire period of plant vegetation. The article draws attention to the large role in the evaporation process of the vegetable screen, especially its parameters. It was revealed that the amount of moisture in the soil layer also plays a role. It was shown that with increasing moisture reserves in the soil, evaporation in absolute terms, in time, increases, and in a normalized form decreases. The reasons, according to the authors, are two. One of them is associated with the differentiation of moisture in the soil, and the other is associated with purely mathematical properties (since the denominator and numerator of the fraction change according to different laws when normalizing evaporation). Scientific novelty. The resulting structures and algorithms allow us not only to determine the daily moisture reserves in the soil on arable land and on pastures (taking into account physical evaporation), but also during further study can become the basis for modeling processes under different climate change scenarios.
Keywords: process, evaporation, modeling, experience, programming, algorithm, moisture reserves, soil, environment.
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For citation: Vasilyev Yu. I., Turko S. Yu. Nazarova, M. V., Chernyavskiy Yu. V. Protsess izmeneniya vlagozapasov na pashne i pastbishchakh s uchetom fizicheskogo ispareniya [The process of change of humidificaion reserves in agriculture and pastures taking into account physical evaporation] // Agrarian Bulletin of the Urals. 2019. No. 12 (191). Pp. 2‒8. DOI: 10.32417/1997-4868-2019-191-12-2-8. (In Russian.)
