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Showing items 1 through 9 of 5.
  1. Library Resource
    Peer-reviewed publication
    December, 1999
    Chile

    Metropolitan Santiago is one of the many Latin American cities which has been developed according to a spread model of urbanisation. This pattern has caused at least two types of consequences: economic and physical ones. The former is shown in the speculation of land value at the rural fringe of the metropolitan area which has low prices, these have suddenly increased after the normative changes in the land use, from rural to urban. The later shows location of massive low-income housing and commercial malls regardless connection to the urban fabric and spatial shaping of the existing city.

  2. Library Resource
    Peer-reviewed publication
    December, 1999
    Chile

    El Plan Regulador Comunal es el instrumento normativo de planeación urbanística chilena, cuya formulación pretende regular en el ámbito comunal básicamente los siguientes aspectos: los usos de suelo, las condiciones de edificación y subdivisión del suelo, la red vial estructurante y los limites urbanos.Se cree que este instrumento es imperfecto toda vez que no incorpora en la normativa una dimensión clave del urbanismo: la morfología urbana, entendida como el sistema espacial tridimensional de la ciudad.

  3. Library Resource

    a threat to developing-country food security by 2020?

    Peer-reviewed publication
    Policy Papers & Briefs
    December, 1999

    Global population in the year 2020 will be a third higher than in 1995, but demand for food and fiber will rise by an even higher proportion, as incomes grow, diets diversify, and urbanization accelerates. However this demand is met, population and farming pressure on land resources will intensify greatly. There is growing concern in some quarters that a decline in long-term soil productivity is already seriously limiting food production in the developing world, and that the problem is getting worse. Sarah Sherr first focuses on the magnitude and effects of soil degradation.

  4. Library Resource
    Peer-reviewed publication
    Journal Articles & Books
    December, 1999
    Eastern Africa, Sub-Saharan Africa, Ethiopia

    Soil erosion is one of the most serious environmental problems in Ethiopia. Coupled with growing populations, falling per capita food production and worsening poverty, loss of productive land due to land degradation undermines rural livelihoods and national food security. Despite their awareness of the erosion problem, peasants' investments in land have been limited. We use an applied nonseparable model to simulate conservation decisions. Pervasive market imperfections, poverty and high rates of time preference seem to undermine erosion-control investments.

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