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Resultados de la búsqueda

Mostrando ítems 1 a 9 de 405.
  1. Library Resource
    Terra Brasilis
    Artículos de revistas y libros
    Junio, 2017
    América del Sur, Brasil

    O objetivo do artigo é compreender o período entre 1822 e 1850 como um momento da história brasileira em que se instituiu simultaneamente a absolutização da propriedade privada da terra e a legalização jurídica da grilagem de terra. O processo de monopolização das terras brasileiras que se realizou na primeira metade do século XIX reproduziu a grilagem como forma e conteúdo central da formação territorial do Brasil.

  2. Library Resource
    tematica
    Publicación revisada por pares
    Noviembre, 2020
    Brasil

    Os territórios indígenas (TIs) são fundamentais para o equilíbrio do clima do planeta. No entanto, os efeitos das mudanças climáticas – em consequência de ações antrópicas – já são perceptíveis nos modos de vida dos povos originários. Nesse contexto, à luz da perspectiva ecológica da comunicação, o artigo objetiva demonstrar como o processo de digitalização dos territórios, por meio do uso do celular, favorece uma comunicação ampliada e participativa visando maior controle sobre os ecossistemas.

  3. Library Resource
    Etnografica
    Artículos de revistas y libros
    Agosto, 2016
    América Latina y el Caribe, América del Sur, Brasil
    O objetivo do artigo é explorar as potencialidades de uma experiência etnográfica entre duas perspectivas de uso e cobertura da terra em assentamentos agrícolas na Amazônia: a técnico-científica, com a produção / classificação de imagens de satélite; e a nativa, com a produção / classificação de desenhos de agricultores. Apresenta-se a pesquisa, as similitudes / discrepâncias entre as perspectivas, a experiência etnográfica entre os protagonistas e as potencialidades de uma análise equivalente entre diferentes percepções da espacialidade.
  4. Library Resource

    Volume 10 Issue 3

    Publicación revisada por pares
    Marzo, 2021
    Estados Unidos de América

    Soil microorganisms play an important role in agricultural ecosystems, but their response to organic fertilizer application has not been thoroughly elucidated. Thus, high-throughput sequencing was used to investigate the responses of soil bacterial to organic fertilizer amendment (composted from pig manure) in the field during the entire growth cycle of maize plants.

  5. Library Resource

    Volume 10 Issue 3

    Publicación revisada por pares
    Marzo, 2021
    Bahamas, China, Grecia, Noruega, Santa Sede

    The spatial distribution of potentially toxic elements in land near a heavily loaded highway in the West Attica region (Greece) is discussed. This study aimed to investigate the extent of soil contamination with trace elements on land in the margin of highways. The concentration of thirty-five elements in topsoil, car ash, and road sediment bulk samples was determined. Statistical and spatial analysis was applied for evaluating the geochemical dispersion of the examined elements. Geo-accumulation index was estimated.

  6. Library Resource

    Volume 10 Issue 3

    Publicación revisada por pares
    Marzo, 2021
    Hong Kong, Estados Unidos de América

    Rural settlements account for 45% of the world’s population and are targeted places for poverty eradication. However, compared to urban footprints, the distribution of rural settlements is not well characterized in most existing land use and land cover maps because of their patchy and scattered organization and relative stability over time. In this study, we proposed a pixel- and object-based method to map rural settlements by employing spectral-texture-temporal information from Landsat and Sentinel time series.

  7. Library Resource

    Volume 10 Issue 3

    Publicación revisada por pares
    Marzo, 2021
    Canadá, Alemania

    The holm oak woodlands as ecotonic phytocoenoses occur under different ecological conditions, and frequently representing the climax of edaphoxerophilous series of crests and siliceous rocky areas. In this paper we study the floristic, ecological, and biogeographical differences of the edaphoxerophilous holm oak woodlands of the southwestern Iberian Peninsula, included in the Querco rotundifoliae-Oleenion sylvestris suballiance.

  8. Library Resource

    Volume 10 Issue 3

    Publicación revisada por pares
    Marzo, 2021
    Islas Cocos (Keeling), China, Reino Unido, Estados Unidos de América, Santa Sede

    This research was conducted on an area of inland sands characterised by various degrees of overgrowth by vegetation and soil stabilisation. This landscape’s origin is not natural but is connected to human industrial activities dating from early medieval times, which created a powerful centre for mining and metallurgy. This study aims to identify the changes in the above- and belowground phytomass in the initial stages of succession and their influence on the chemical properties and morphology of the soil.

  9. Library Resource

    Volume 10 Issue 3

    Publicación revisada por pares
    Marzo, 2021
    China, Rusia, Estados Unidos de América

    The structural index is an important quantitative parameter for revealing the structural properties of loess. However, there is no a widely accepted measurement method for structural index at present. This study aims at presenting a novel method for obtaining the loess structural index (LSI), based on the application of computed tomography (CT) scanning techniques and laboratory physico-mechanical tests. The mountainous area of Lvliang in northwest China was taken as the study area, and Late Pleistocene loess samples were taken from various sites in the region.

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