Seasonal dynamics of certain organic substances content in the postfire living aboveground phytomass of the feather grass community (on the example of the site “Burtinsky steppe” of the Orenburg State Nature Reserve)
Neilya V. Dusaeva, Junior Researcher
Institute of the Steppe of the Ural Branch of the Russian Academy of Sciences, Orenburg, Russia, Maksutova1@mail.ru, https://orcid.org/0000-0002-7224-1255
Olga G. Kalmykova, Candidate of the Biological Sciences, Senior Researcher
Institute of the Steppe of the Ural Branch of the Russian Academy of Sciences, Orenburg, Russia, o.k.81@list.ru, https://orcid.org/0000-0001-5743-5054
Abstract
The effect of fire on the chemical composition of the aboveground phytomass of steppe pastures was studied during 2015—2016 on the territory of the Orenburg State Nature Reserve (the site “Burtinsky steppe”). The article presents the data on the nutritional value of the forb-fescue-feather grass community with Artemisia marschalliana, one of the typical representatives of plant communities in this area. The dynamics of the accumulation of basic nutrients in the plant matter of steppe pastures on control and burnt sites was tracked: crude protein, %, crude fiber, %, crude fat, %, carbohydrates (sugar, starch), %, crude ash, %, nitrogen-free extractive substances (NES), %. The absence of statistically significant differences between the nutritional value of plant samples of the control and burnt areas of the same community, with the exception of NES, was revealed.
Key words
Aboveground phytomass, nutritional value, chemical composition, Ural-Ilek interfluve, steppe fires.
Acknowledgments: The work was carried out within the framework of the state assignment to the Institute of the Steppe of the Ural Branch of the Russian Academy of Sciences (project no. GR AAAA-A21-121011190016-1)
For citation:
Dusaeva N. V., Kalmykova O. G. Seasonal dynamics of certain organic substances content in the postfire living aboveground phytomass of the feather grass community (on the example of the site “Burtinsky steppe” of the Orenburg State Nature Reserve). Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal, 2023, no. 4 (48), pp. 41—53. DOI: https://doi.org/10.32516/2303-9922.2023.48.2.
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