Sensitivity assessment, adjustment, and comparison of mathematical models describing the migration of pesticides in soil using lysimetric data

Шеин, Е. В.; Кокорева, А. А.; Gorbatov, V. S.; Умарова, А. Б.; Kolupaeva, V. N.; Perevertin, K. A.

doi:10.1134/s1064229309070072

Cited by 18 publications

(3 citation statements)

References 3 publications

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“…A sta ble universal situation was thus formed in the current quantitative hydrophysics: the use of prognostic math ematical models of mass transfer, whose experimental support includes SWRCs in the form of the van Genu chten equation parameters and the filtration coeffi cient or pedotransfer functions derived for their calcu lation [11,42,44]. A question is frequently raised, "To what extent do the van Genuchten and van Genu chten-Mualem equations for the calculation of the water conductivity function satisfy the soil condi tions?"…”

Section: Theoretical Principles Of Transfer Models and Their Experimementioning

confidence: 99%

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Physically based mathematical models in soil science: History, current state, problems, and outlook (Analytical Review)

Шеин

2015

Eurasian Soil Sc.

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The formation, development, and some problems of the current physically based models of water and solute transfer are considered in this review. These models appeared about a half century ago. They were based on the basic laws of soil physics and other branches of soil science (laws of balance, transfer, diffusion, hydrodynamic dispersion, etc.) described by the corresponding equations and programs and supported by the experimental data in the form of physically based parameters. At present, one of the main problems in the development, adaptation, and application of these models is that the current and future mathematical models should rest upon the experimental support with a clear physical basis characterizing the nature of the phe nomenon described. This experimental support enables creating research models, drawing conceptual con clusions, and, hence, understanding, analyzing, and managing soil processes. This is apparently possible only if the set of methods for the experimental support of models is substantiated, preferably in direct physical experiments and under field conditions close to the future model prognoses.

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Section: Theoretical Principles Of Transfer Models and Their Experimementioning

confidence: 99%

“…This is quite logical and understandable. R. Hamming, one of the founders of cybernetics and informatics, wrote, "The purpose of computing is insight, not numbers" [10,11]. Therefore, the further understanding of soil processes is related to the development of physically based models.…”

Section: Introductionmentioning

confidence: 99%

Physically based mathematical models in soil science: History, current state, problems, and outlook (Analytical Review)

Шеин

2015

Eurasian Soil Sc.

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“…Among these approaches, methods for assessing the transport parameters from the conventional soil properties (density, organic mat ter content, and particle size distribution) should be noted. Detailed reviews of these approaches can be found in recent publications [1,6,7,50,53].…”

Section: Introductionmentioning

confidence: 99%

Adequacy of transport parameters obtained in soil column experiments for selected chemicals

et al. 2012

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The transport parameters were determined for the 18 O isotope (in the form of H 2 18 O), the Br -ion, and atrazine in intact columns of allophanic Andosol (Mexico State, Mexico). A one dimensional model for the convective dispersive transport of chemicals with account for the decomposition and equilibrium adsorp tion (HYDRUS 1D), which is widely applied for assessing the risk of the chemical and bacterial contamina tion of natural waters, was used. The model parameters were obtained by solving the inverse problem on the basis of laboratory experiments on the transport of the 18 O isotope, the Br -ion, and atrazine in intact soil columns at a fixed filtration velocity. The hydrodynamic dispersion parameters determined for the 18 O and Br -ions in one column were of the same order of magnitude, and those for atrazine were higher by 3-4 times. The obtained parameters were used to calculate the transport of these substances in another column with dif ferent values of the water content and filtration velocity. The transport process was adequately described only for the 18 O isotope. In the case of the Br -ion, the model significantly underestimated the transport velocity; for atrazine, its peak concentration in the column was overestimated. The column study of the transport of the three chemical compounds showed that transport parameters could not be reliably predicted from the results of a single experiment, even when several compounds were used in this experiment.

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Soil pesticides pollution detection and specific recognition using electronic nose

Kong,

Ren,

Shi

et al. 2024

Sensors and Actuators B: Chemical

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Sensitivity assessment, adjustment, and comparison of mathematical models describing the migration of pesticides in soil using lysimetric data

Cited by 18 publications

References 3 publications

Physically based mathematical models in soil science: History, current state, problems, and outlook (Analytical Review)

Physically based mathematical models in soil science: History, current state, problems, and outlook (Analytical Review)

Adequacy of transport parameters obtained in soil column experiments for selected chemicals

Soil pesticides pollution detection and specific recognition using electronic nose

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