Impact of natural fires on the vegetation cover of steppe and forest-steppe zones (European part of Russia, Middle Volga region)Valentina Ilyina, Anna Mitroshenkova, Stepan Senator, Vera Solovyeva and Stanislav RogovE3S Web Conf., 265 (2021) 01019DOI: https://doi.org/10.1051/e3sconf/202126501019