Theoretical research on evolution of health of plants affected by heavy metal absorption process
2018
Cardei, P., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Tudora, C., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania)
The paper presents a modified version of the mathematical model of the heavy metal transfer process. The changes start from the beliefs of the authors that the factors that govern the plant's evolution (germination, growth and vegetative development, senescence and death) are environmental factors (structure and chemical composition of soil and air, their humidity, soil pH, lighting, applied fertilization, meteorological events, etc.) and not the time. Time is an artificial parameter introduced to provide a simpler reporting of dynamic processes. We do not know if time has simplified, or if it kept the truth in reporting the results, but it is the most common parameter used for this purpose. Of the influential factors, only the temperature and the concentration of heavy metal ions in the soil are considered in this article. The paper presents simulations using minimal experimental data, model constants being obtained by calibration. Effects of increasing delay and triggering of the biomass descending process were achieved (phytoremediation also). The experiments required to increase the performance of the model, the theoretical and practical efficiency of such attempts are estimated. These appreciations allow readers to reflect, to try to estimate the theoretical and practical efficiency of such attempts.
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