Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 80.
  1. Library Resource
    Rapports et recherches
    janvier, 2010
    Albanie, Grèce, Europe

    The study provides the background and objectives of the Athens workshop, then provides separate in-depth background and analysis of the informal development solutions being adopted in Albania and Greece. Following a review of just how ‘pro-poor’ the solutions are, the final chapter provides a series of lessons learned, many of which can be applied to other countries experiencing informal development issues.

  2. Library Resource
    Documents et rapports de conférence
    décembre, 2009
    Espagne

    Agricultural trade is by far the largest vehicle to ‘move’ water virtually around the world. Observing that most countries import and export water embedded in the exchanged products, the objective of this study is to assess the virtual water ‘trade’ in Spain for the period 1997-2006. We differentiate between the green and blue components of virtual water from a hydrological and economic perspective. The combination of spatial and time dimensions offers a unique empirical setting to determine whether virtual water ‘trade’ can contribute to reduce water scarcity.

  3. Library Resource
    Articles et Livres
    décembre, 2009
    France, Espagne

    Calibration and validation of simulation models describing herbage growth or feed quality of semi-natural grasslands is a complex task for agronomists without investing effort into botanical surveys. To facilitate such modelling efforts, a limited number of grassland types were identified using a functional classification of species. These grassland types were characterized by three descriptors required to model herbage growth or feed quality: the abundance-weighted mean leaf dry matter content across grass species, the relative abundance of grasses, and an estimate of species richness.

  4. Library Resource
    Articles et Livres
    décembre, 2009
    Italie

    The need to develop approaches for risk-based management of soil contamination, as well as the integration of the assessment of the human health risk (HHR) due to the soil contamination in the urban planning procedures has been the subject of recent attention of scientific literature and policy makers. The spatial analysis of environmental data offers multiple advantages for studying soil contamination and HHR assessment, facilitating the decision making process.

  5. Library Resource
    Articles et Livres
    décembre, 2009
    Portugal, Espagne

    Most of the Mediterranean woodlands in Spain, Portugal, and California are managed as agrosilvopastoral enterprises, producing some combination of livestock, wood, cork products, and crops, as well as wildlife habitat and diverse environmental services. Private amenity benefits to landowners have been suggested as an explanation for high land prices and the persistence of such rangeland enterprises despite apparently marginal cash returns.

  6. Library Resource
    Articles et Livres
    décembre, 2009
    Espagne

    Maintaining or increasing soil organic carbon (SOC) in agricultural lands is important for soil productivity, restoration and could potentially be a factor in reducing carbon emissions. In order to implement best practices for maintaining productivity and increasing SOC, there is a need for understanding how management changes may alter SOC levels. This applied study presents a methodology to assess and predict SOC levels to better understand effects modification to land management can have in semiarid central Spain. Results show extensification using longer-term pasture rotations (e.g.

  7. Library Resource
    Articles et Livres
    décembre, 2009
    Espagne

    Bare ground abundance is an important rangeland health indicator and its detection is a fundamental part of range management. Remote sensing of bare ground might offer solutions for land managers but also presents challenges as modeling in semiarid environments usually involves a high frequency of spectral mixing within pixels.

  8. Library Resource
    Articles et Livres
    décembre, 2009
    Espagne

    Large tracts of European rural land, mostly in the less favored areas (LFA), are devoted to low-inputs and large scale grazing systems (LSGS) with potential environmental and social functions. Although these LSGS may provide harbor for a good part of European nature values, their continuity is facing contrasting threats of intensification and abandonment. These areas, however, may be characterized by particular grazing structures and social dynamics of change that should be unveiled prior to attempts to devise rural development strategies or to adapt policy frameworks in general.

  9. Library Resource
    Articles et Livres
    décembre, 2009
    Espagne, Europe

    During the last 50 years, mechanisation of the rural environment, and, more recently, the Common Agricultural Policy have led to profound changes in agrarian landscapes throughout Europe, and in particular in the rich and diverse Mediterranean landscapes (). In the north-east of the Iberian Peninsula, a small area of hedgerow landscape persists as a remnant of what was once an important centre for livestock production.

  10. Library Resource
    Articles et Livres
    décembre, 2009
    Italie

    Over one hundred wetland specialists and Earth Observation experts from around the world gathered at the European Space Agency's 'GlobWetland Symposium: Looking at wetlands from space' in Frascati, Italy, from 19 to 20 October, 2006. The aim of the Symposium was to stimulate discussion between the two communities by reviewing the latest developments in Earth Observation (EO) for the inventory, assessment and monitoring of wetlands and identify key scientific, technical and policy-relevant challenges for the future.

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