QUALITY OF THE SOILS ON DEGRADED MINING LANDS AND POSSIBILITIES OF RESTORING THEIR FERTILITY - CASE STUDY: ROVINARI COAL BASIN
2024
APOSTU, Izabela-Maria | FAUR, Florin | LAZĂR, Maria | TRAISTĂ, Eugen
Top soil is a valuable and vital resource. It is highly sensitive to human actions that may cause its quantitative and qualitative deterioration and destruction. The rate of soil destruction is significantly higher than that of restoration, and for this reason it is important to minimize the surfaces of land affected by mining. In the case of degraded surfaces, in order to return to the economic or ecological circuit, interventions are required on the pedogenesis process, which naturally is a long-lasting one. This research aims to improve soil quality on mining dumps by carrying out pot experiments considering soil substitutes based on mixtures of industrial waste, household, and stable biodegradables and using soil improver plant species. Individual soil quality indexes were described and a methodology was proposed and applied to assess the aggregate anthropogenic soil quality index. The analyses indicated that rocks as sands, clays, dusts, which are the main constituents of some waste dumps, represent a good base of inorganic matter necessary in the pedogenesis process, and with interventions, and, if needed, fertilization, their properties can be improved.
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