Vol 12, No 2 (2021)

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Full Issue

Theoretical works

KINETIC ISOTOPIC EFFECT: STATIC RAYLEIGH EQUATION AND BASIC DYNAMIC ISOTOPE EQUATION FOR THE SUBSTRATE IN THE DESCRIPTION OF NITRITE-DEPENDENT ANAEROBIC OXIDATION OF METHANE

Vavilin V.A.

Abstract

The article analyzes the results of modeling the dynamics of nitrite-dependent methane oxidation (N-DAMO) by Methylomirabilis oxyfera microorganisms using the standard isotope dynamic equations. Without specifying a specific function of the rate of the process, the traditional static Rayleigh equation is derived from the basic dynamic isotope equation. Thus, the equation of the 1st order in terms of the substrate is only a special case in the derivation of the Rayleigh equation. It was shown that the dominant fractionation of carbon isotopes occurs in the process of the microbiological reaction of anaerobic oxidation of methane by nitrite, and not in the physical process of mass transfer of dissolved methane into the gas phase. In contrast to the static Rayleigh equation, the dynamic description of the process of fractionation of stable isotopes is important when describing the parallel transformations of the substrate.

Environmental Dynamics and Global Climate Change. 2021;12(2):
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REDUCING GREENHOUSE GAS EMISSIONS IN RUSSIA: STATE OF THE PROBLEM AND COMPENSATING MEASURES FOR RESTORATION OF FORESTS AS A NET CO2 SENSOR

Galimullin A., Bakhteev K.

Abstract

The article provides an overview and analysis of the state of the problem of reducing greenhouse gas (GHG) emissions in Russia, considers the measures developed at the level of the country and individual corporations that issue GHG to combat climate change. Particular attention is paid to methods of carbon dioxide (CO2) compensation, including taking into account the absorbing capacity of forests. The experience of the largest Russian oil company "Tatneft" is described in the implementation of a project for the breeding and scaling of triploid aspen with an increased absorptive capacity for planting seedlings in forests in order to reduce and compensate for the carbon footprint.

Environmental Dynamics and Global Climate Change. 2021;12(2):
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Editorial notes

Notice from the editors

Frolov O.A., Il’yasov D.V.

Abstract

Сообщение от редакции журнала ДОСиГИК

 

По совместному решению редакции часть этого выпуска посвещена 55-летию главного редактора нашего журнала, М.В. Глаголева. В связи с этим в выпуске представлена статья на его 55-летие и ряд старых статей, которые были написаны, но оказались не доступны широкому кругу читателей. Хотя данные статьи написаны давно, они по прежнему представляют интерес для читателей. Тексты статей были предоставлены М.В. Глаголевым и отредактированы Д.В. Ильясовым и М.В. Яниным.

От лица редакции сердечно поздравляем с 55-летием главного редактора журнала, М.В. Глаголева!

Environmental Dynamics and Global Climate Change. 2021;12(2):
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Overviews and lectures

55th ANNIVERSARY OF M.V. GLAGOLEV

Yanin M.V., Yevdokimov I.

Abstract

The most sound papers by Mikhail V. Glagolev were reviewed, and the scope of his research activities was provided in the context of his 55th anniversary. The abstracts of some significant publications are provided and deeply discussed. All the publications mentioned were divided into six groups: 1) gas dynamics of ecosystems; 2) wetland mapping; 3) microbiology; 4) modeling of environmental processes, and other mathematical methods; 5) other topics and discussion articles; 6) teaching activities and reviews. Also,  scientometrics indicators of M.V. Glagolev’s scientific activity were discussed.

Environmental Dynamics and Global Climate Change. 2021;12(2):
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MATHEMATICAL MODELING OF MICROORGANISM GROWTH (ANALYTICAL APPROACH)

Glagolev M.V.

Abstract

This work is a report "Mathematical modeling of the growth of microorganisms", written at the suggestion of the teacher of mathematics L.S. Akinfieva in 1982, when the author was a student of the 10th grade of a specialized (with in-depth study of biology) school No. 11 in Moscow. All students of this class were asked to write reports (as a "gift for the 60th anniversary of the USSR") within the framework of the general theme "Mathematics in my future profession."

The report contains the basic equations of the kinetics of growth and dying of microorganisms, as well as their consumption of a nutrient substrate (Malthus, Monod's equations, Herbert's model). In addition to the equations of microbiological kinetics themselves, some methods of obtaining their approximate solutions in the form of explicit functions (without using numerical methods) are demonstrated.

Environmental Dynamics and Global Climate Change. 2021;12(2):
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MATHEMATICAL MODELING IN SOIL BIOKINETICS

Glagolev M.V.

Abstract

This work is a report written at the suggestion of Ph.d. N. S. Panikov in 1985 when the author was a 2nd-year student of the Faculty of Soil Science of the M. V. Lomonosov Moscow State University.

The report provides an example of a mathematical model of soil biokinetics and discusses numerical methods for solving its constituent equations. For the steady state, some useful computer programs are given, and for the non – steady state, references to programs published in the literature are given.

Environmental Dynamics and Global Climate Change. 2021;12(2):
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INVERSE PROBLEMS OF SOIL BIOKINETICS

Glagolev M.V.

Abstract

This work represents the materials of the report prepared at the suggestion of N. S. Panikov in 1985–1986, when the author was a third-year student at the Faculty of Soil Science, M.V. Lomonosov Moscow State University.

The report contains definitions of direct and inverse problems. A classification of inverse problems and several examples of such problems encountered in soil science and biological kinetics are given. The question of the ill-posed inverse problems is touched, and the main methods of their solution are briefly listed. The problem of identifying a gas source in a soil column by the layer-by-layer balance method (based on measurements of the dynamics of the concentration field) is considered in detail. This task is shown as a computer program, and for others, useful links to programs published in the literature are given.

Environmental Dynamics and Global Climate Change. 2021;12(2):
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KOSTYCHEV-ORLOV EQUATION AND FIRST MATHEMATICAL MODELS OF HUMUS DYNAMICS

Glagolev M.V.

Abstract

This work is a report written at the suggestion of the talented Soviet scientist V.V. Zeleneva in 1986-1987, when the author was a 4th year student at the Faculty of Soil Science, Moscow State University. M.V. Lomonosov.

The report analyzes the equation proposed at the dawn of soil science by P.A. Kostychev for the maximum level of humus accumulation (and later modified by D.S. Orlov). It is shown that from the point of view of mathematics, the Kostychev equation is meaningless and has no solution at all. Improved by Orlov, it already has solutions, but it seems that it still cannot be effectively used. In this regard, various types of those mathematical models of humus dynamics are considered, which were used by specialists in soil science and ecology.

Environmental Dynamics and Global Climate Change. 2021;12(2):
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