Resultados de la búsqueda | Land Portal

Resultados de la búsqueda

Mostrando ítems 1 a 9 de 551.
  1. Library Resource
    Mayo, 2013
    Etiopía

    As countries increasingly strive to transform their economies from agriculture‐based into a diversified one, land rental will become of greater importance. It will thus be critical to complement research on the efficiency of specific land rental arrangements such as sharecropping with an inquiry into the broader productivity impacts of the land rental market. Plot‐level data for a matched landlord–tenant sample in an environment where sharecropping dominates allow us to explore both issues.

  2. Library Resource
    Mayo, 2013
    Viet Nam

    With the aim of promoting national food security, the Vietnamese government enforces the designation of around 35 per cent of agricultural land strictly for paddy rice cultivation. We investigate the economic effects of adjusting this policy, using an economy-wide model of Vietnam with detailed modelling of region-specific land use, agricultural activity, poverty and food security measures.

  3. Library Resource
    Mayo, 2013
    Panamá

    Characterization of preexisting flora is an essential preliminary step for successful land rehabilitation projects. This descriptive study was undertaken in a fragmented, dry tropical forest region in Panama. Five different habitat types were selected: active pasture, 2-yr and 5-yr abandoned pastures, forested riparian zones, and a forest fragment. Species richness, density, basal area, dispersal modes, and phenology of trees as well as their uses were determined.

  4. Library Resource
    Noviembre, 2014

    It is clear that climate change involves changes in temperature and precipitation and, therefore, directly affects land productivity. However, this is not the only channel for climatic change to affect agro-systems. Biodiversity is also subject to climatic change. The present paper illustrates a unique attempt to economically assess the potential effects of climate change induced impacts of biodiversity on the agricultural sector in terms of changes in land productivity, changes in agricultural output and, ultimately, changes in national GDPs.

  5. Library Resource
    Mayo, 2013

    In response to the pressing global challenges of climate change, initiatives under the auspices of ‘reducing emissions from deforestation and forest degradation’ (REDD) have been implemented in over 30 developing and least-developed countries since 2005. The initiatives cover nearly every significant and vulnerable forest ecosystem worldwide. In this study we review six representative initiatives, two each from Africa, Asia and Latin America.

  6. Library Resource
    Artículos de revistas y libros
    Diciembre, 2013
    Camboya

    Forest cover monitoring plays an important role in the implementation of climate change mitigation policies such as Kyoto protocol and Reducing Emissions from Deforestation and Forest Degradation (REDD). In this study, we have monitored land cover using the PALSAR (Phased Array type L-band Synthetic Aperture Radar) full polarimetric data based on incoherent target decomposition.

  7. Library Resource
    Artículos de revistas y libros
    Diciembre, 2013

    Satellite imagery with fine spectral and spatial resolution and high temporal resolution provides a unique opportunity to map and monitor biodiversity. The aim of this article is (i) to review the state of the use of high-resolution remote sensing for ecological studies in the Indian Himalayan Region (IHR) and (ii) to suggest further potential avenues of research in the region using this technology.

  8. Library Resource
    Artículos de revistas y libros
    Diciembre, 2013
    India

    Polarimetry is a technique for quantitatively estimating the change in polarization in a backscattered electromagnetic signal (in this case a radar signal) with reference to the polarization of the incident signal for estimating the geophysical properties (roughness and dielectric constant) of surface elements. In this study, quadrapole Radarsat-2 data have been utilized for mapping geological elements in Archaean terrain based on their geophysical parameters preserved in the four polarization channels of Radarsat-2 data.

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