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Resultados de la búsqueda

Mostrando ítems 1 a 9 de 48.
  1. Library Resource
    Artículos de revistas y libros
    Octubre, 2018
    Brasil

    Low productivity cattle ranching, with its linkages to rural poverty, deforestation and greenhouse gas (GHG) emissions, remains one of the largest sustainability challenges in Brazil and has impacts worldwide. There is a nearly universal call to intensify extensive beef cattle production systems to spare land for crop production and nature and to meet Brazil?s Intended Nationally Determined Contribution to reducing global climate change. However, different interventions aimed at the intensification of livestock systems in Brazil may involve substantial social and environmental tradeoffs.

  2. Library Resource
    Artículos de revistas y libros
    Diciembre, 2016
    Argentina

    The study region is one of the most endangered area from wind erosion in the country. This process, coupled with recurrent droughts in last decades and the mishandling of productive practices have generated desertification. This study presents a review of the interaction of these processes based on literature, field survey and perception of producers. Recommendations for rehabilitation are proposed. The area covers 6.5 million hectares, hosting in 2002: 550,000 people and 7,825 farms in irrigated and non-irrigated lands. Irrigated lands are devoted to agricultural production.

  3. Library Resource
    Artículos de revistas y libros
    Noviembre, 1998
    Costa Rica

    Rosero-Bixby, L. & Palloni, A. Population and Environment (1998) 20: 149. doi:10.1023/A:1023319327838

  4. Library Resource
    Artículos de revistas y libros
    Marzo, 2014
    Costa Rica

    The payment of environmental services (PES) in Costa Rica has become a really important and novel issue which must be conceived as an economic instrument and a financial order system that tries to repay the land owners under the forest regime for the environmental benefits they provide to the country, in an effort to conserve and sustain the usage of primary and tropical forests.

  5. Library Resource
    Artículos de revistas y libros
    Abril, 2017
    Argentina, América del Sur

    Most sedimentary plains occupied by semiarid woody ecosystems have low groundwater recharge rates and high vadose zone salt accumulation. Their cultivation has often led to drainage of water below root zone, displacement of solutes, and rising water tables, affecting, in most extreme cases, long-term viability of agriculture. To explore this possibility in semiarid plains of South America, we characterized vadose flow using chloride data in dry forests of central Argentina, in an area that has been subject to intense deforestation and agricultural expansion during the last century.

  6. Library Resource
    Artículos de revistas y libros
    Febrero, 2016
    América del Sur

    This paper analyses the climate change in La Plata Basin, one of the most important regions in South America due to its economy and population. For this work it has been used the Meteorological Research Institute (MRI) and the Japanese Meteorological Agency (JMA) atmospheric global model. For both near and far future, the projected changes for temperature over the entire basin were positive, although they were only statistically significant at the end of the XXI century. Changes in the annual cycle of mean temperature were also positive in all subregions of the basin.

  7. Library Resource
    Artículos de revistas y libros
    Mayo, 2017
    Argentina, América central, América del Sur

    The intergovernmental Panel on Climate Change (IPCC, 2012) predicts increases in the frequency of heavy precipitation in the 21st century over many areas of the globe. Thus, climate change will increase flood and drought frequencies, alter stream geomorphology and habitat availability, as well as increase water temperature, sediments, and nutrient concentration (Sabater & Tockner, 2010).

  8. Library Resource
    Artículos de revistas y libros
    Junio, 2009
    México

    Terminos Lagoon ecosystem is the largest fluvial-lagoon estuarine system in the country and one of the most important reserves of coastal flora and fauna in Mexico. Since the seventies, part of the main infrastructure for country's oil extraction is located in this area. Its high biodiversity has motivated different type of studies including deforestation processes and land use planning. In this work we used satellite image analysis to determine land cover changes in the area from 1974 to 2001.

  9. Library Resource
    Informes e investigaciones
    Marzo, 2013
    Ecuador

    This research attempts to elucidate the beneficial role of the REDD+ mechanism in the mitigation of climate change, as well as justice-related issues to its implementation. It examines equity issues involved in climate change and carbon trading through the REDD+ mechanism. Addressing its shortcomings without entering into deeper debates about the legitimacy of the market system in which most of us operate.

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