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The article discusses the long-term results of the study concerning the problem of substantiation of biological methods for restoring the protective functions of forest areas contaminated with toxic solid waste from the mining industry for the creation of forest plantations. The object of research was a technogenic system, including waste, technology, recultivated and non-recultivated forest areas within the boundaries of the Amur-Primorsky coniferous-broadleaf forest region of the Far Eastern Federal District of Russia. A comprehensive geoecological assessment of the impact of waste within the boundaries of non-recultivated sites on the environment and human health using various methods, namely, using mathematical apparatus and GIS technologies, made it possible to assess the ecological state of the studied area as critical and catastrophic. Biological methods have been developed to restore the protective functions of technogenically polluted forest areas with the use of microorganisms and humic preparations for the rehabilitation of areas disturbed by tin mining. The novelty of the proposed methods is confirmed by Patents of the Russian Federation. For 30 years, the technogenic landscape has been developing soils according to soil-ecological functions as close as possible to the background soils. In the same direction, the formation of not only embryozems, but also the formation of a complex plant community and the restoration of the protective functions of forest areas were found, which indicates the possibility of using recultivated areas to create forest plantations. [ABSTRACT FROM AUTHOR]