RESULTS OF GRID-BASED MAPPING OF SPECIES OF THE FAMILY ROSACEAE IN THE DENDROFLORA OF THE KOHISTON DISTRICT
Keywords:
grid squares, grid cells, dendroflora, grid-based maps, herbarium specimens, species richness, collection density, mountain floras, family, of the Kohiston district.Abstract
This study presents the results of grid-based mapping of dendroflora in the Kohiston district of Uzbekistan, focusing on species richness and collection density across 263 grid cells of 5×5 km. Fieldwork conducted between 2020 and 2024, combined with historical herbarium data from 1926–2019, provided a dataset of 4,653 specimens representing 116 species from 26 families. The analysis revealed that the mountainous regions of the Turkestan and Molguzar ranges exhibit the highest species diversity, particularly at elevations between 1,100 and 2,500 m in the Zomin and Baxmal districts. Among the polymorphic families, Rosaceae dominates, occurring in 93.54% of grid cells and comprising 41 species from 13 genera, with Prunus, Rosa, Cotoneaster, and Crataegus being the most species-rich. Maximum species richness reached 80 species per grid cell, and collection density peaked at 476 specimens. The study provides the first comprehensive grid-based distribution analysis of Rosaceae and other dendroflora families for the region, contributing valuable data for botanical geography and biodiversity conservation in Central Asia.
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