Przemiany zbiorowisk segetalnych w 1977–1983 towarzyszące powstaniu Bełchatowskiego Okręgu Przemysłowego [Changes in the segetal communities in 1977–1983 accompanying with formation of Bełchatów Industrial Region]

Abstract

Characteristics of the changes in the agrophytocoenoses of the Bełchatów Industrial Region are presented in this paper. The observations were conducted on permanent areas during 1977–1983. Biological (phytosociological and bioindicatorial) methods were used. The dynamics of changes in weed communities in crop rotation were anlysed. Changes in the composition and structure of agrophytocoenoses belonging to 10 syntaxonomes and changes in their habitats were found. The causes and directions of these changes were established. These processes lead to the impoverishment of segetal flora and the formation of simpler formations which are less stable and less resistant to anthropopressure. On the basis of the results obtained in this study, an evaluation of the productivity of field habitats was made, agroecological regions were discerned and ways of forming and protecting agricultural production areas of the Bełchatów Industrial Region are given.