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Evaluation of the disturbed lands recultivation projects in the Republic of the Crimea

The development of the extractive industry on the territory of the Crimean Peninsula leads to an increase in the number of quarries and, consequently, to an increase in the area occupied by disturbed lands requiring recultivation. The reclamation of such land plots on the basis of creating the necessary conditions for the development on them of regenerative successions of zonal vegetation and ultimately the formation of soils is much cheaper for land users. Therefore, studies of the rates of soil formation, including using the methods of mathematical modeling of the processes of formation of the humus horizon of the soil over time, become relevant. Based on the example of the Alexandrovsky field of saw limestone in the Black Sea region of the Republic of the Crimea, the economic efficiency of reclamation of disturbed land was calculated. The results of the calculation showed that in terms of cost-effectiveness, it is more rational to use the mining engineering model with further self-overgrowing of the sites to be reclaimed when it comes to reclaiming disturbed lands of the Alexandrovsky career.