Biomorphological structure of restored vegetation cover of abandoned lands of the Forest-Steppe of Ukraine
DOI:
https://doi.org/10.31548/forest2019.03.079Abstract
Due to the influence of the anthropogenic factor and as a result of vegetation autogenesis, on the floodplains and abandoned lands with restored meadow vegetation, adaptive ecologically conditioned species conglomerates has been formed. Therefore, the study of the biomorphological structure of the different groups of plant species of restored meadow vegetation allows using quantitative relations between plants belonging to different life forms to reveal significant indices for the analysis of the flow of demutations, eventually expanding the representation of the occurrence of demotion processes on floodplains and abandoned lands with restored meadow vegetation.
The features of plant life forms and the morphology of their vegetative organs are one of the determining factors for spatial structure of plant communities. The relevance of the study is due to the correlation between the biomorphological structure of the flora, ecology of the plant communities and their dynamic trends.
The research is based on the results of five-year investigation on the abandoned lands with restored vegetation cover of meadows in the Forest-Steppe of Ukraine (2013–2017). The biomorphological analysis of a floral structure of restored meadow vegetation cover according to the classification of plant life forms by K. Raunkiaer has been conducted.
The predominant group is hemicryptophytes (amount 358 species or 58.8 %), the second position belongs to terophytes (115 species or 18.6 %), cryptophytes occupy the third position with 66 species (10.7 %), there are the 42 species (6.8 %) of mesophanerophytes, nanophanerophytes and hamephytes containing 38 plant species (6.1%).
The direct proportional relationship between the fraction of hemicryptophytes and terophytes in the structure of restoration stages enable quantifying changes of the ratio value from the first to the fourth stages of demutation.
Formation of the main zonal and typological features of restoring of a meadow vegetation cover were detected on the third restoration stage, which corresponds to a period of 15 years from the moment of disturbance. The results of research allow establishing the provisions of the revisions in the system of restoration stages and optimizing the restoration of vegetation in the Forest-Steppe of Ukraine.
Keywords: life forms, restoration, abandoned lands, meadow vegetation.
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