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    Wyświetlanie 1-2 z 2
    Tytuł:
    Remote sensing techniques for tracking changes caused by illegal gold mining in Madre de Dios, Peru
    Autorzy:
    Adamek, Katarzyna
    Lupa, Michał
    Zawadzki, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1955015.pdf
    Data publikacji:
    2021-12-10
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    environmental monitoring
    geospatial analysis
    South America
    remote sensing
    Peru
    Opis:
    Illegal extraction of gold has grown to be a problem in many countries, causing the degradation of the environment. The main purpose of this paper is to investigate changes in tree cover and surface pollution. The development of a mine site has been observed and analysed with images acquired from Landsat and the Sentinel missions. The results of the study showed changes in the state of the environment, strongly suggesting the possibility of ongoing pyrite weathering processes and the transportation of clay materials down watercourses, which can cause not only the further deterioration of the environment but also slow down the natural regeneration of the forest. In addition, research has found disturbing changes in vegetation, showing a loss of tree cover in the Amazon Rainforest as high as 17%. The validity of using remote sensing methods to observe the development of individual mining sites and their characteristics was confirmed.
    Źródło:
    Miscellanea Geographica. Regional Studies on Development; 2021, 25, 4; 205-212
    0867-6046
    2084-6118
    Pojawia się w:
    Miscellanea Geographica. Regional Studies on Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spatial structure of the economy - the evolution of nodes and networks in South and Central America
    Autorzy:
    Czerny, Mirosława
    Czerny, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2134634.pdf
    Data publikacji:
    2019-11-10
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    Space structure of economy
    regional nodes and networks
    South America
    Central America
    spatial organization
    Opis:
    The form assumed contemporarily by spatial organization in South and Central America as a network of nodes and spatial linkages represents the outcome for the space of this region of long-acting external influences plus internal conditions that have - at diferent times in diferent ways shaped spatial relationships and the manner in which space in this part of the world is planned. Naturally, the spatial structure of today's economy is influenced further by globalization, with growing competition for access to resources, be these either mineral deposits or agricultural in nature. These impacts ensure that, notwithstanding the widely-voiced opinion on the need to protect nature in areas of the continent supporting moist tropical forests, and in the high Andes, the governments of the diferent countries continue to award concessions allowing corporations of global reach to exploit resources of value that are in demand worldwide. This aggressive “resources race” has its serious consequences with regard to the forms and scope the region's spatial management and organization assume. These processes ought to be regulated by spatial planning, which is thus failing to play its proper role at regional levels. Those researching South America refer without hesitation to the lack of planning and overexploitation of raw materials, with all the serious consequences this has for society, not least with regard to internal migration, expulsions, the impoverishment of groups in society deprived of their land, and so on.
    Źródło:
    Miscellanea Geographica. Regional Studies on Development; 2019, 23, 4; 225-234
    0867-6046
    2084-6118
    Pojawia się w:
    Miscellanea Geographica. Regional Studies on Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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