Resultados de la búsqueda | Land Portal

Resultados de la búsqueda

Mostrando ítems 1 a 9 de 26.
  1. Library Resource
    Informes e investigaciones
    Diciembre, 1995
    Benin

    Compte-rendu d'un séminaire sur les recherches pour le développement d'une agriculture durable au Bénin qui s'est tenu le 9 septembre 1993 à Amsterdam.

  2. Library Resource
    Artículos de revistas y libros
    Diciembre, 2014
    Indonesia

    The ABF programme addresses one of today’s major societal challenges, how to achieve a sustainable and inclusive biobased economy, with high-level scientific research on the thin lines between food and non-food, commodities and waste products, livelihood opportunities and risks, and local and global economy. This book provides insights into the main issues and key questions relating to the biobased economy, reflects on the objectives of the ABF programme, and offers policy recommendations.

  3. Library Resource
    Artículos de revistas y libros
    Diciembre, 2012
    Argelia, Burkina Faso, Nigeria, Mauritania, Malí, Etiopía, Eritrea, Camerún, Sudán del Sur, República Centroafricana, Senegal, Chad, Níger, Sudán

    Time series of vegetation indices (VI) derived from satellite imagery provide a consistent monitoring system for terrestrial plant productivity. They enable detection and quantification of gradual changes within the time frame covered, which are of crucial importance in global change studies, for example. However, VI time series typically contain a strong seasonal signal which complicates change detection. Commonly, trends are quantified using linear regression methods, while the effect of serial autocorrelation is remediated by temporal aggregation over bins having a fixed width.

  4. Library Resource
    Artículos de revistas y libros
    Mayo, 2018

    Over the past 15 years, 3 million hectares of forests have been converted into shrublands or grasslands in the Mediterranean countries of the European Union. Fire and drought are the main drivers underlying this deforestation. Here we present a conceptual framework for the process of fire-induced deforestation based on the interactive effects of fire and drought across three hierarchical scales: resistance in individuals, resilience in populations, and transitions to a new state.

  5. Library Resource
    Artículos de revistas y libros
    Diciembre, 2017

    Few things are more defining in a landscape compared to the absence or presence of trees, both in aesthetic and in functional terms. At the same time, tree cover has been profoundly affected by humans since ancient times. It is therefore not surprising that opinions about deforestation and colonization of landscapes by trees have always been strong. Although loss of forests is often lamented, there is also profound cultural affection for open landscapes including some that have been deforested in the past.

  6. Library Resource
    Informes e investigaciones
    Diciembre, 2017

    Land degradation is a large problem worldwide, especially in agricultural areas. Between 1-6 billion ha of land worldwide is affected by land degradation. With an increasing world population, more food production is needed and, therefore, more land is converted into agricultural areas. This conversion of land to agricultural areas, in turn, leads to more land degradation. Some common forms of land degradation are desertification, salinization and soil erosion by water. The negative effects of soil erosion have been recognized for a long time.

  7. Library Resource
    Informes e investigaciones
    Diciembre, 2007
    Países Bajos

    De EU-Bodemstrategie en het voorstel voor een Kaderrichtlijn Bodem (KRB) dat daaraan gekoppeld is, betekenen een nieuwe visie op het Europese beleid op het gebied van de bodem. Nagegaan wordt wat de mogelijke betekenis van een bodemstrategie en/of ¬richtlijn is voor het huidige landbouwbeleid. Uit de analyse blijkt dat de directe impact van het huidige voorstel voor een KRB beperkt is voor de Nederlandse landbouw.

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