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Resultados de la búsqueda

Mostrando ítems 1 a 9 de 461.
  1. Library Resource
    Artículos de revistas y libros
    Diciembre, 2008

    The degradation of soils with high sand content, in the southwest of the state of Rio Grande do Sul, is due to the vegetal cover withdrawal, forming sandy areas called "areais", which pose a risk to animal husbandry and the prairie ecosystem. A technique of revegetation with cover crops such as Avena strigosa Schieb. and Lupinus albescens H. et Arn., was developed to reduce the soil particle movement by eolic erosion.

  2. Library Resource
    Artículos de revistas y libros
    Diciembre, 2016
    Sri Lanka

    The island of Sri Lanka is free from serious natural hazards such as volcanic activity and earthquakes resulting from climatic extremes, but there are impacts of many natural disasters, such as landslides, floods and droughts, the intensity and frequency of which are increasing due to human interventions. Some areas of Sri Lanka are also periodically subject to cyclones that occur due to climatic conditions and geographical locations. Land degradation denotes all natural or anthropogenic processes that diminish or impair productivity of land.

  3. Library Resource
    Artículos de revistas y libros
    Diciembre, 2015

    In many regions of the world, soil erosion is one of the main land degradations processes that reduce the soil productivity by removing fertile topsoil layers, thus decreasing levels of organic matter and the nutrients. Therefore erosion researches constitute an important part of the research on the soils. The erosion risk of soils can be evaluated directly carried out in the field, greenhouses or laboratory by means of some experiments or indirectly based on developing and applying models that gives risk expectations for large areas.

  4. Library Resource
    Artículos de revistas y libros
    Diciembre, 2006
    Etiopía

    Rangeland condition assessment was conducted in the Borana lowlands, southern Ethiopia to determine the current status and future trend of the grazing land with emphasis on comparing different functional land use units, called Kalo, Worra and Foora. An approach that integrated data from herbaceous and woody plants, soil and pastoralists' perceptions was followed. Density and canopy cover of woody plants were determined in 123 plots of 500m2.

  5. Library Resource
    Artículos de revistas y libros
    Diciembre, 2013
  6. Library Resource
    Documentos de política y resúmenes
    Diciembre, 2017

    With current rates of land degradation reaching ten to twelve million ha per year, there is an urgent need to scale up and out successful, profitable and resource-efficient sustainable land management practices to maintain the health and resilience of the land that humans depend on. As much as 500 million out of two billion ha of degraded land, mainly in developing countries, have restoration potential, offering an immediate target for restoration and rehabilitation initiatives.1 In the past, piecemeal approaches to achieving sustainable land management have had limited impact.

  7. Library Resource
    Documentos de política y resúmenes
    Diciembre, 2018
    Letonia

    Land degradation is one of the most pressing problems ensuring sustainable use of land. In order to provide a clear understanding of land degradation and its risks, as well as to implement unified measures for prevention of land degradation in Latvia, the Land Management Law came into force in 2015. It individually defines the concepts of land and soil degradation, thus separating them from each other, as well as clarifying the term “degraded territory”.

  8. Library Resource
    Documentos de conferencias e informes
    Diciembre, 2017
    Letonia, Ucrania

    One of the tools for management of balanced development of rural areas is spatial planning – a kind of activity regarding to organization of use and protection of land at the national, regional and local level. The issues of conservation and restoration of natural resources in rural areas are extremely relevant for Ukraine. Main environmental problems in rural areas are: degradation of agricultural land, loss of biodiversity and pollution of land, overground and underground water. In recent years a new environmental problem has emerged − desertification.

  9. Library Resource
    Documentos de conferencias e informes
    Diciembre, 2018
    Letonia

    Land is one of the most important natural resources; its use is determined by several factors, especially resources and infrastructure. Without proper land management and maintenance as well as after abandoning the land favourable conditions arise for land degradation. Land degradation processes are also found in road infrastructure, which are promoted by various risk factors.

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