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Resultados de la búsqueda

Resultados de la búsqueda

Mostrando ítems 1 a 9 de 5906.
  3. Library Resource

    Carbon accumulation and humification in soils of abandoned former agricultural lands in the hemiboreal zone

    Documentos de conferencias e informes
    Diciembre, 2015
    Letonia
    Utilización de la tierra

    Abandonment of the agricultural land is a common, topical problem in many post-soviet countries, including Latvia. These changes impact nutrient cycling, soil properties. The results of the study of abandoned agricultural lands in the hemiboreal zone in Latvia validated the theory that after afforestation, in long term, soil accumulates organic carbon (Corg). During the first 30 years of abandonment, Corg content in mineral topsoil does not present a significant increase; it varies from 42 to 43 t haE-1.

  7. Library Resource

    Relations entre utilisations et caractéristiques géographiques des parcelles en système bovin de montagne

    Artículos de revistas y libros
    Diciembre, 2012
    Utilización de la tierra

    This study, which looked at 72 in traditional Salers system, shows there is a correlation between the use made of fields and the characteristics of these fields. The geographical characteristics and the use made of over 1,500 fields (cut and/or grazed fields) were described, mainly based on the statements made by farmers. Three groups of fields were identified (only cut fields, cut and grazed fields, only grazed fields) and in a second step, 15 types of fields uses were identified and described.

  9. Library Resource

    Effect of reduction of human activity on utilization of farmlands by wild boars (Sus scrofa) after evacuation from the nuclear accident at Fukushima

    Artículos de revistas y libros
    Abril, 2015
    Japón, Europa
    Ordenación territorial
    Utilización de la tierra
    Tierras agrícolas

    In recent years, wild boars (Sus scrofa) have caused growing damage to farm crops in a hilly and mountainous area of the Tohoku region. In particular, in designated evacuation zones following the accident at the Fukushima Dai-ichi nuclear power plant, there are growing concerns about the expanding range of wild boars and the resulting degradation of farmland.

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