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Section 1: Rangeland Ecology and Management

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https://hdl.handle.net/10217/195526

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Browsing Section 1: Rangeland Ecology and Management by Author "Bayarsaikhan, U., author"

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    Phenology of Stipa krylovii Roshev. and Stipa tianschanica var. klemenzii Roshev., species dominating the vegetation communities of Hustai National Park
    (Colorado State University. Libraries, 2015-06) Tserendulam, Ts., author; Oyuntsetseg, B., author; Nyambayar, D., author; Bayarsaikhan, U., author; Nutag Action and Research Institute, publisher
    Hustai National Park (HNP), which is one of the important parts of the Mongolian Special Protection Areas network, was founded in 1992 with the purpose of reintroducing the Takhi horse (Equus ferus przewalskii). HNP vegetation phenology research was first done in 1999 and since 2003 has been conducted each year between 24th of April and 24th of September, every 10 days. The purpose of this study is to identify, with the help of dominant species, the response of vegetation growing period to climate changes and to clarify features of species' phenology changes. As a result of the research we identified and recorded general trends of dominant vegetation phenology stages and how these changes respond to environmental factors (air temperature and precipitation). Comparison of the phenology stages of the two grasses dominant in the mountain steppe and steppe communities, Stipa tianschanica var. klemenzii Roshev. and Stipa krylovii Roshev. identified that the May and June precipitation amount had a significant effect on the beginning of the species' spring growing period (p<0.027). The results show that the vegetation growing period of the species has been increasing in the mountain steppe communities.