Dusaeva G.H., Maksutova N.V.
SEASONAL DINAMICA STOCKS OF ABOVEGROUND PHYTOMASS IN GRASSLAND IS PREDOMINANT FORMATIONS ARE-FESCUE-SALESMOBILE COMMUNITY WITH POA TRANSBAICALICA AND SPIRAEA CRENATA ^{[№ 11 ' 2017]}
The article presents the results of a study conducted in 2016 on the territory of the “Burtinskaya steppe” Reserve “Orenburg”. Seasonal dinamica reserves of the top phytomass was studied on the example of herb-predominant formations are-fescue-salesmobile (Stipa zalesskii, Festuca valesiaca, Helictotrichon desertorum, Herbae stepposae) soobshestve with Poa transbaicalica and Spiraea crenata. The accumulation and decomposition of vegetable substances are the most important characteristics of the ecosystem. Stock change of aboveground phytomass can be called as natural causes, such as meteorological conditions and anthropogenic impacts. Follow-up of these phenomena on the territory of the protected area allows you to separate these factors. To study the reserves of the top phytomass in the protected steppe, which is considered as the reference ecosystem was the analysis of processes of accumulation and distribution in connection with the variability of weather conditions of vegetation period. These indicators are specific phytocenosis and reflect his adaptation to the environment. The study of seasonal development showed that within the four seasons of the year are allocated Padsasonny or periods that are characterized by the presence of groups of species with similar phenological rhythm of development or, on the contrary, similar processes of dying. In the studied community during the period of the growing season, we were allocated another Padsasonny or periods: rannevesennem, spring, ranelate, summer, late summer and autumn.

Maksutova N.V., Dusaeva G.H.
SINANTROPIZATCIJA VEGETATION IN THE SOUTHERN PART OF THE ORENBURG URAL REGION UNDER THE INFLUENCE OF GRAZING ^{[№ 6 ' 2016]}
In the process of economic development of the land man brings to the natural vegetation synanthropic species that are resistant to anthropogenic pressure. In the southern part of the Orenburg Ural region prevail pasture and grasslands. The results of the evaluation by synanthropization steppe, shrub, grassland, coastal aquatic communities common in the study area. The study contains 83 commensal flora species. synanthropization index was 18.4 %, 10.6 % adventization index, apofitizatsii code — 40.9 %. The synanthropic group of plants is mainly dominated by species of the family Asteraceae — 25 species of plants, second only to the family Brassicaceae — 12 species. On 8 species found in families Poaceae and Chenopodiaceae. There was widespread synanthropic species got to meadow plant communities, where their number is about 1/3 of the total number of species of these communities (projective cover of the species from 1 to 10 %). In the steppe and coastal water plant communities distant from settlements with minimal grazing pressure projective cover commensal species does not exceed 3-5 %, but often less than 1 % and grow singly. Number of commensal species in shrub communities is half of the total number of (projective cover of the species is about 1-2 %). It should be noted that the most active processes synanthropization occur in coastal aquatic communities, due to their location in places of watering, and the instability prevailing mesophytic gigrofitnogo components flora.

Keane N.O., Kalmikova O.G., Maksutova N.V., Dusaeva G.H.
APPROACHES TO MONITORING STUDIES THE IMPACT OF FIRES ON VEGETATION STEPPE PROTECTED AREAS (SPAS) (FOR EXAMPLE, THE SITE "BURTINSKAYA STEPPE" STATE RESERVE "ORENBURGSKII") ^{[№ 13 ' 2015]}
Fires are difficult to control, even in the reserve component of the human impact. They arise, usually as a result of economic activity and is rapidly transferred from the adjacent territories in the reserved section. Since the establishment of the reserve (1989) in the "Burtinskaya steppe" (total land area of 4,500 hectares) was 7 fires of different dates of occurrence (from April to October) and dissemination area (from 470 to 4,200 hectares). The last fire occurred on the territory of the site in August of 2014 year. V occurred due to fire, it became necessary to assess the impact of fire on vegetation Reserve and oversee his replacement dynamics. In the study area could lay the groundwork for monitoring the dynamics of vegetation after fire exposure. The selected set of methods allow to evaluate the processes and phenomena relating to the major impacts of fires on vegetation.