Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 6.
  1. Library Resource
    Documents de politique et mémoires
    décembre, 2005
    Afrique orientale, Afrique sub-saharienne, Afrique, Kenya

    Western Kenya is one of the most densely populated areas in Africa. Farming there is characterized by low inputs and low crop productivity. Poverty is rampant in the region. Yet the potential for agriculture is considered good.

  2. Library Resource
    Documents de politique et mémoires
    décembre, 2005
    Afrique centrale, Afrique orientale, Afrique

    This Policy Brief presents some of the lessons learned from research work related to the search for appropriate mechanisms to manage forest resources, and conflicts arising from contested rights to forest resources in eastern and central Africa (ECA).

  3. Library Resource
    Documents de politique et mémoires
    décembre, 2005
    Mexique

    More than three-quarters of Mexico's coffee is grown on small plots shaded by the existing forest. Because they preserve forest cover, shade coffee farms provide vital ecological services including harboring biodiversity and preventing soil erosion. Unfortunately, tree cover in Mexico's shade coffee areas is increasingly being cleared to make way for subsistence agriculture, a direct result of the unprecedented decline of international coffee prices over the past decade.

  4. Library Resource
    Documents de politique et mémoires
    octobre, 2005

    In seeking to value environmental amenities and public goods, individuals often have trouble trading off the (vague) amenity or good against a monetary measure. Valuation in these circumstances can best be described as fuzzy in terms of the amenity valued, perceptions of property rights, and the numbers chosen to reflect values. In this paper, we apply fuzzy logic to contingent valuation, employing a fuzzy clustering approach for incorporating preference uncertainty obtained from a follow-up certainty confidence question.

  5. Library Resource
    Documents de politique et mémoires
    décembre, 2005
    Serbie, Monténégro

    Genetic equilibrium of polymorphic enzyme loci from four natural populations of Cheilosia vernalis was tested. The study populations were from different regions of the Balkan Peninsula: Mediterranean area (Morinj, Montenegro: CVMOR), low mountain in the Pannonian plain (Fruska Gora, Serbia: CVFG), and two high Dinaric mountains (Durmitor, Montenegro: CVDUR; and Kopaonik, Serbia: CVKOP). Out of twelve enzyme loci analyzed for genetic variability, only four to six were polymorphic in the studied populations.

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