Yerlan Bekeshev

@gh-ecology.kz

Aerospace comittee Ministry of Digital Development, Innovations and Aerospace Industry of the Republic of Kazakhstan Branch office of the Republican State Enterprise on the right of economic management «Infracos» in Almaty
Aerospace comittee Ministry of Digital Development, Innovations and Aerospace Industry of the Republic of Kazakhstan Branch office of the Republican State Enterprise on the right of economic management «Infracos» in Almaty

Yerlan Bekeshev


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https://researchid.co/yerlan_bekeshev

RESEARCH, TEACHING, or OTHER INTERESTS

General Earth and Planetary Sciences, General Environmental Science, Ecology, Evolution, Behavior and Systematics, Ecology
6

Scopus Publications

Scopus Publications

  • Environmental Monitoring and Risk Assessment in Missile Stage Impact Zones Using Mapping Data and a Digital Passport Approach
    Aliya Kalizhanova, Anar Utegenova, Yerlan Bekeshev, Murat Kunelbayev, Zhazira Zhumabekova
    Atmosphere, 2026
    This paper proposes an approach to digitizing the environmental passport for areas where detachable parts of launch vehicles fall in Kazakhstan based on an interactive geographic information system platform and smart maps. An example is considered for zone U-4 (“Ulytau” district of the “Karaganda” region), which includes the fall zones of “Soyuz” launch vehicle blocks (IZ 26, 32, 34, 42, 56). The natural and climatic factors and hazards of the territory are analyzed: the total area of the zones under consideration exceeds 4.1 million hectares, annual precipitation varies between 218 and 289 mm, strong winds of 5.0–6.8 m/s are characteristic, and a high level of fire hazard can develop within 6–7 days. Data on fires for 2021 are provided. For an integrated assessment, a normalized system criterion, environmental sustainability indicator (0–1), has been introduced, aggregating four groups of criteria (chemical, mechanical, pyrogenic, biota) with a breakdown of contributions and calculation of uncertainty (σ and 95% CI). The system criterion of environmental sustainability map identifies local ‘hot spots’ with levels of around 0.8–1.0, while the uncertainty map shows maximums of up to 0.12–0.14 (with background values of ~0.02–0.08), which increases the validity of management decisions on monitoring and reclamation.
  • The Influence of Rocket Hydrocarbon Fuel on the Activity of Soil Microbial Communities in Areas of Launch Vehicle Operation in Kazakhstan
    Aliya Kalizhanova, Anar Utegenova, Yerlan Bekeshev, Zhazira Zhumabekova, Yelena Stepanova, et al.
    Microorganisms, 2026
    Hydrocarbon-based rocket fuels, particularly kerosene grades T-1 and RG-1 used during launch vehicle operations, represent a persistent source of soil contamination in areas impacted by rocket stages. This study quantitatively evaluates the response and recovery dynamics of soil microbial communities in Calcisol (Loamic) soils from the U-25 impact area near the “Baikonur” Cosmodrome (Kazakhstan) under controlled kerosene contamination. Eleven soil samples were monitored over 90 days, including one uncontaminated control and ten samples exposed to increasing concentrations of T-1 or RG-1 (100–15,000 mg/kg). Microbial indicators included total microbial count, actinomycetes, microscopic fungi, and spore-forming bacteria, expressed as CFU/g (mean ± SD, n = 3). Acute exposure caused significant reductions in total microbial abundance (28–58%) and microscopic fungi (43–75%, p ≤ 0.05), indicating pronounced short-term toxicity. By Day 90, bacterial and actinomycete populations exhibited partial to complete recovery, with some treatments exceeding control values, suggesting metabolic adaptation and hydrocarbon utilization. In contrast, fungal populations remained consistently suppressed throughout the experiment, indicating prolonged ecological stress. No strict dose–response relationship was observed, highlighting the influence of soil physicochemical properties on microbial resilience and hydrocarbon bioavailability. These findings identify microscopic fungi as the most sensitive indicators of kerosene contamination, suggesting that indigenous bacterial and actinomycete communities play a key role in natural attenuation. The results provide quantitative thresholds relevant for environmental monitoring and support the development of microbiologically informed bioremediation strategies in areas impacted by rocket launches.
  • Detoxification of contaminated soils from hydrocarbon rocket fuel used in «Soyuz» launch vehicles using the bioremediation method
    Yerlan Bekeshev, Zhazira Zhumabekova, Meirbek Moldabekov
    Journal of Space Safety Engineering, 2024
  • Data on the temporal changes in soil properties at the emergency crash site of the launch vehicle ‘Soyuz-FG’ in Kazakhstan
    Yerlan Bekeshev, Ivan Semenkov, Yelena Stepanova, Andrey Karpachevskiy, Sergey Lednev, et al.
    Data in Brief, 2024
  • Influence of Hydrocarbon Rocket Fuel Kerosene T-1 on the Physical and Geochemical Properties of Different Soil Types
    Yerlan Bekeshev, Bibigul Mirkarimova, Zhazira Zhumabekova, Laila Jumabayeva
    Water Air and Soil Pollution, 2023
    Studies of the influence of hydrocarbon rocket fuel kerosene T-1 on the physical and geochemical properties were carried out in laboratory circumstances on different types of soils: brown semi-desert soil designated as zone (U-25) located in Central Kazakhstan, mountainous brown desert soil zone (U-30) located in East Kazakhstan, and a model soil standard (control soil). The soil was treated with various concentrations (0.002–150.0 g/kg) of hydrocarbon rocket fuel kerosene T-1, while the contact time was 3, 10, and 30 days. Pollution with kerosene T-1 in concentrations 5.0–15.0 g/kg affects the hydraulic characteristics of soils from the U-25 zone, and the filtration rate decreases by 4–5 times. For the mountainous brown desert soil from the U-30 zone, the concentration of kerosene up to 15.0 g/kg does not affect the mechanical composition of the soil, as well as the availability of the main nutrients (potassium, phosphorus, nitrogen). According to the mechanical composition, both soils belong to medium loamy soils. It has been established that when soil is contaminated from the U-25 zone in concentrations 15.0–150.0 g/kg, the fraction from 1.0 to 0.05 mm increases by 4–5%, and the silty and clay fractions in the soil decrease.
  • Ecological modelling research of transformations of unsymmetrical dimethylhydrazine and nnitrodimethylamine
    Alma Ormanbekovna Bimaganbetova, K. Uteulin, Anuar Bulatovich Atygaev, O. Fedorina, Yelena Yurievna Stepanova, et al.
    Systematic Reviews in Pharmacy, 2020
    The article presents the results of ecological modeling of soil and plant pollution processes by toxic heptyl rocket fuel (unsymmetrical dimethylhydrazine, UDMH) and the product of its transformation by N-nitrosodymethylamine (NDMA). Experiments delivered in laboratory conditions show that in sabulous gray-brown soil (uncontaminated soil samples were taken from the Baikonur Cosmodrome zone), the reaction of transformation of UDMH in NDMA is reversible and depends on the concentrations of reacting compounds. NDMA is transferred from the soil to the stems and leaves of plants of wild-growing species by the aerogenous route. The ability to accumulate NDMA by leaves and stems of plants is more or less dependent on the plant species. Objective - research on the transformation of unsymmetrical dimethylhydrazine (UDMH) and N - nitrozodymethylamine (NDMA) in a closed reservoir - an ecological model of rocket fuel pollution. Research methods. The method of ecological modeling studies of UDMH and NDMA contamination in soil and plants has been developed and tested. Boxes with samples of sabulous gray-brown soil and seeds of wild plants brought from the drop zones of detachable parts of launch vehicles have been placed in hermetically sealed and transparent containers. NDMG or NDMA are introduced into the soil. To measure the content of UDMH and NDMA in soil samples, in condensate on container walls, in the above-ground part and roots of plants, as well as in water washes from leaves, the method of quantitative chemical analysis high performance liquid chromatography has been used.