Abstract
Abstract—This study examins coenopopulations of a perennial herbaceous plant Rhaponticum uniflorum (L.) DC. (Asteraceae) from different plant communities of Transbaikalia in the Republic of Buryatia and the Trans-Baikal Territory. Coenopopulations of R. uniflorum were studied in Gramineous-Filifolium, Gramineous-Artemisia-herb, Gramineous-Artemisia, Artemisia-Stipa, Filifolium-Artemisia-Gramineous, Gramineous-herb, Gramineous-Galium and other associations. Such grasses and sedges as Stipa krylovii Roshev., Leymus chinensis (Trin.) Tzvelev, Poa botryoides (Trin. ex Griseb.) Roshev., Agropyron cristatum (L.) Beauv., Achnatherum sibiricum (L.) Keng ex Tzvelev, Carex pediformis C.A. Mey. are found in associations with R. uniflorum. The maximum yield of the aerial part of R. uniflorum is 30.7 ± 3.5 g/m2 (air-dry weight) in Phlojodicarpus-Filifolium association, the minimum is 0.9 ± 0.1 g/m2 (air-dry weight) in Gramineous-Artemisia-herb association. It has been established that the occurrence of the species varies from 15 to 67% and averages 33%. We assessed the resource potential of R. uniflorum raw materials in Transbaikalia: the biological volume (17 563 kg, air-dry weight), exploitation volume (11 221 kg, air-dry weight), and the annual potential harvest (2242 kg, air-dry weight) were estimated.
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