GEOGRAPHICAL ANALYSIS AND LIFE FORMS OF SPECIES BELONGING TO THE GENUS SORBUS L. IN THE FLORA OF NAKHCHIVAN AUTONOMOUS REPUBLIC

Abstract

Species included in the genus Sorbus L. are widespread in the temperate zone of the Northern Hemisphere, most often in the subtropical regions of the Northern Hemisphere. In natural conditions, species belonging to the genus Sorbus L. are found singly or together with other species of trees and shrubs along the edges of forests, in stony and rocky places. They can grow both in sunny places and in the shade. They grow on different soils, humus, clay, limy, rich or poor in acid, stony, sandy slopes, cliffs, thin forests of the second grade. They are cold-resistant and drought-resistant. Wild species included in the genus Sorbus L. are trees and shrubs that grow mainly in high places, stony and rocky, sometimes even on wide open slopes Species belonging to the genus Sorbus L., especially in the first years of development, grow rather quickly and have sufficient stability. All shaped species of the genus Sorbus L. (trees and shrubs) reduce erosion in the soil and increase soil fertility. Species belonging to the genus Sorbus L. are plants of great important for reforestation. The economically valuable genus Sorbus L. is suitable for the climate of Nakhchivan and is widely distributed in the highland areas. According to the conducted researches, 19 species of Sorbus L. have spread in the flora of the Nakhchivan Autonomous Republic. The article provides information on the bioecological characteristics, geographical analysis, classification by habitat types and life forms of Sorbus L. plant species suitable for the flora of the Nakhchivan Autonomous Republic. Keywords: Sorbus L. species, bioecological features, geographical analysis, areal types, life forms.