Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 38.
  1. Library Resource
    Articles et Livres
    décembre, 2007

    The inverse relationship between land productivity and farm size is an old and puzzling empirical regularity. Most explanations for this relationship rely on market imperfections that jointly determine the farm size and the household's shadow price of some productive inputs. We use plot-level data from the ICRISAT/VLS to assess whether these household-specific theories can explain the puzzle. The data exhibit plots of different sizes being simultaneously cropped by the same household.

  2. Library Resource
    Articles et Livres
    décembre, 2015

    The global rush for land has provoked diverse policy responses from host countries. While some governments are facilitating ‘land grabs’ within their borders, others have restricted land acquisitions by foreigners. Drawing from the Brazilian case, I argue that such restrictive regulations may be limited in their effectiveness because they apply a state‐centric geopolitical logic to a threat that is largely de‐territorialized and financialized.

  3. Library Resource
    Articles et Livres
    décembre, 2008

    Ecological restoration is a key component of biological conservation. Nevertheless, unlike protection of existing areas, restoration changes existing land use and can therefore be more controversial. Some restoration projects negatively affect surrounding landowners, creating social constraints to restoration success. Just as negative off-site impacts (i.e., negative externalities) flow from industrial areas to natural areas, restoration projects can generate negative externalities for commercial land uses, such as agriculture.

  4. Library Resource
    Articles et Livres
    décembre, 2015

    In the Mekong Delta, alluvial clay soils have been used intensively over many generations for rice monoculture. Currently, farmers are confronted by problems of declining land productivity. Rotations comprising rice and upland crops can increase soil quality, but appropriate cropping systems for paddy soils have received relatively little attention. We therefore established a multiyear field experiment to evaluate the long‐term effects of cropping systems with different rotations on soil chemical quality.

  5. Library Resource
    Articles et Livres
    décembre, 2015

    In the Brazilian Amazon, private land accounts for the majority of remaining native vegetation. Understanding how land‐use change affects the composition and distribution of biodiversity in farmlands is critical for improving conservation strategies in the face of rapid agricultural expansion. Working across an area exceeding 3 million ha in the southwestern state of Rondônia, we assessed how the extent and configuration of remnant forest in replicate 10,000‐ha landscapes has affected the occurrence of a suite of Amazonian mammals and birds.

  6. Library Resource
    Articles et Livres
    décembre, 2012

    This research presents a case study using cost‐benefit analysis to identify priority areas for forest landscape restoration to protect the ridgelines and hillsides in a single county of the southern Appalachian region, which may be applicable to other communities with similar issues. Private and public benefits per dollar spent are estimated for 15 target restoration sites.

  7. Library Resource
    Articles et Livres
    décembre, 2015
    Panama

    Full and effective participation of indigenous peoples and local communities, and high accuracy estimates are two current requirements for the purposes of monitoring forests at international level. We produced two land cover maps, both of which were based on digital image processing (decision trees) using Rapideye imagery, and a land cover participatory map, for indigenous territories of eastern Panama. Accuracy of the three maps was evaluated using field data.

  8. Library Resource
    Articles et Livres
    décembre, 2009
    Éthiopie

    New land reforms are again high on the policy agenda and low-cost, propoor reforms are being tested in poor countries. This article assesses the investment and productivity impacts of the recent low-cost land certification implemented in the Tigray region of Ethiopia, using a unique household and farm-plot-level panel data set, with data from before and up to eight years after the reform. Alternative econometric methods were used to test and control for endogeneity of certification and for unobserved household heterogeneity.

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