Abstract
The process of natural restoration of the petrophyte ecosystem consists of the following stages: formation of tailing dumps, initiation and restoration of biodiversity on the surface of tailings dumps, solification (formation of new soil) on the surface of dumps, accumulation of nutrients (nitrogen, phosphorus, K2O) and humus formation in the layers of newly formed soil on the surface of tailings dumps depending on their age. The stages are established experimentally by studying the dynamics: the development of the number of plant species on the surface of the dumps, the degree of evolution of regosols in the chronological sequence, the results of increasing the nutrient content and humus formation depending on the age of the studied tailing dumps. The regularity has been demonstrated regarding the process of soil formation on the surface of tailings dumps, which represents the succession and mutual interaction of the natural processes of initiation and development of plant biological diversity on the surface of dumps, solification (new soil formation), nutrient accumulation and humus formation in soils, which take place simultaneously without human intervention and ensures the process of natural formation of the petrophyte ecosystem.
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