Szukana fraza: [Abstract = "In the present paper the resulls of the phytosociological studies on mixed coniferous community Querco roboris\-Pinetum in the Silesian Upland were shown. Different types of plant community disturbances were observed, caused by various forms of forest economy and these are\: impoverishment of floristic composition, decrease of species diversity, monotypization, pinetyzation, fruticetyzation, geranietyzation, neophytization and cespityzation."]

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