Aspects of Plant Diversity Conservation If Taking as a Sample Area Black Sea and Kazakh Steppes in the Rostov Region

In the article the assessment of the fitodiversity of the Don Basin steppe performed. The research defined 37 plant associations of 6 alliances, 4 orders and 4 classes of eco-floristic classification communities that are represented in the Black Sea Steppe and Kazakh Steppe vegetation of Don Basin. Steppe community classified as Festuco-Brometea; petrophytic vegetation represents a class Helianthemo-Thymetea; psammophyte communities were related to the class Festucetea vaginatae; halophyte vegetation of solonetz grounds and hemi-halophyte derivative communities were related to the class Festuco-Puccinellietea.