2. Articole

Permanent URI for this collectionhttps://msuir.usm.md/handle/123456789/13439

Browse

Subject: search.filters.subject.urban ecosystem

Search Results

Now showing 1 - 4 of 4
  • Thumbnail Image
    Item
    INVESTIGAȚII RECENTE PRIVIND STAREA RADIAȚIEI DE FOND ÎN ECOSISTEMUL URBAN BĂLȚI, REPUBLICA MOLDOVA
    (CEP USM, 2024) Stegărescu, Vasile; Ţugulea, Andrian; Bulimaga, Constantin; Bejan, Iurie
    This material reflects the study of the external gamma radiological fund level and the content of natural and man-made radionuclides in the soils of the Balti urban ecosystem in the Republic of Moldova. Radiometric and radiospectrometric research revealed values of the level of the external gamma dose rate as well as the content of anthropogenic and natural radionuclides (137Cs, 226Ra, 232Th, 40K) that do not exceed the provisions of the national norms (NFRP-2000). There is still a need to continuously monitor the level of the external gamma radiological background and the content of radionuclides of different origins in the soil and spontaneous flora, resulting from global deposits from nuclear tests and accidents, including from the Chernobyl NPP.
  • Thumbnail Image
    Item
    ASPECTE PRIVIND INFRASTRUCTURA ECOLOGICĂ URBANĂ ȘI FURNIZAREA SERVICIILOR ECOSISTEMICE
    (CEP USM, 2024) Țugulea, Andrian; Mogîldea, Vladimir; Bejan, Iurii
    The present paper presents the results regarding the role of the ecological infrastructure in the Balti urban ecosystem in the provision of ecosystem services. Modern methods of land use analysis were used, followed by the quantifcation of ecosystem services (air purifcation, carbon storage, water retention). It was established that in the municipality of Balti, agricultural land predominates - 51% (4001.44 ha), followed by construction and courtyards - 28% (2138.25 ha), forests -9% (722.75 ha) , lands occupied by water and lands for streets and markets with 4% each, roads - 3%, and other lands including degraded. In the rural area, agricultural land predominates, and in the urban area - buildings and yards. The urban green infrastructure in the Balti urban ecosystem can remove approximately 51.6 t/year of particles from the air, store 116.5 thousand tons of carbon and retain rainwater in case of 10 mm precipitation - 289.8 thousand t/ year.
  • Thumbnail Image
    Item
    ABORDĂRI METODOLOGICE DE CERCETARE A STĂRII ECOLOGICE A ECOSISTEMELOR URBANE
    (CEP USM, 2024) Mogîldea, Vladimir
    Urban ecosystems represent mainly human habitats, but usually include significant are as for wild species that are associated with urban habitats. They are socio-ecological systems composed of ecological infrastructure (green and blue) and built infrastructure (grey one). Envi ronmental Infrastructure (EI) provides a wide range of benefits for the population: it reduces air pollution, water pollution, noise pollution, provides protection against floods, droughts and heat waves and maintains a connection between people and nature. Urban ecosystems are considered to be in “good condition” if living conditions for people and urban biodiversity are good. Ano ther criterion refers to the balance within the ecosystem, between built and green infrastructure. The environment quality assessment in urban ecosystems requires a specific methodological ap proach, adapted to the complexity of this ecosystem type. The methodology includes a framework of indicators for assessing the ecological state of urban ecosystems, mapping them to help design or implement policies on urban green infrastruc ture, its biodiversity as well as to measure progress towards international, national, regional or local goals in terms of stability and sustainability of urban ecosystems.
  • Thumbnail Image
    Item
    IMPACTUL ACTIVITĂȚILOR ANTROPICE ASUPRA STĂRII DIVERSITĂȚII FLORISTICE DIN CADRUL ECOSISTEMULUI URBAN BĂLȚI, REPUBLICA MOLDOVA
    (CEP USM, 2024) Certan, Corina; Bulimaga, Constantin; Portarescu, Anastasiia; Grabco, Nadejda
    The ecological problems of the urban ecosystem require a complex study to highlight the paths of evolution in a global aspect. Contemporary urban ecosystems represent ecosystems with genesis and microevolutionary processes, it includes a varied spectrum of different taxonomic groups of plant and animal organisms, which occupy certain ecological niches in the ecosystem. The research was carried out in the field during the vegetation period (may – september) of the years 2020 – 2023. The evaluation of the state of floristic diversity was carried out by the method of linear transects. In order to ensure the sustainable development of the plant component of the Balti urban ecosystem, it is proposed to plant species of trees and shrubs that prevent soil erosion, mitigate noise pollution, have the ability to absorb carbon dioxide, retain solid particles from the air, can serve as of habitats for urban fauna and can be used as bioindicators of environmental quality.