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Showing items 1 through 9 of 16.
  1. Library Resource
    Journal Articles & Books
    December, 2015
    Brazil, Africa

    Among the world’s continents, Africa has the highest incidence of food insecurity and poverty and the highest rates of population growth. Yet Africa also has the most arable land, the lowest crop yields, and by far the most plentiful land resources relative to energy demand. It is thus of interest to examine the potential of expanded modern bioenergy production in Africa. Here we consider bioenergy as an enabler for development, and provide an overview of modern bioenergy technologies with a comment on application in an Africa context.

  2. Library Resource
    Journal Articles & Books
    December, 2016
    Indonesia, Malaysia, Brazil

    The oil palm is currently a major source of oil used worldwide for biofuel production and food. In Brazil, it is grown in high rainfall and high temperature regions. The high cost of this oil crop in the Brazilian Amazonia, combined with environmental and land ownership issues and the occurrence of diseases, has aroused considerable interest in growing it in other regions of the country, including the Savanna (Cerrado) Biome.

  3. Library Resource
    Journal Articles & Books
    December, 2013
    Brazil

    Shifting cultivation systems have been blamed as the primary cause of tropical deforestation and are being transformed through various forms of conservation and development policies and through the emergence of new markets for cash crops. Here, we analyze the outcomes of different policies on land use/land cover change (LUCC) in a traditional, shifting cultivation landscape in the Atlantic Forest (Brazil), one of the world’s top biodiversity hotspots.

  4. Library Resource
    Journal Articles & Books
    December, 2015
    Brazil

    Knowing the influence of land use/land cover changes on the hydrological behavior of a subwatershed is essential to land use planning. The Alto Paraguaçu Watershed is a major producer of fruits and vegetables, and currently the largest producer of English potato in the north/northeast of Brazil. The water availability in the region can be considered the limiting factor to the expansion of agricultural frontiers.

  5. Library Resource
    Journal Articles & Books
    December, 2012
    Brazil

    PURPOSE: Until recently, life cycle assessments (LCAs) have only addressed the direct greenhouse gas emissions along a process chain, but ignored the CO2 emissions of land-use. However, for agricultural products, these emissions can be substantial. Here, we present a new methodology for including the implications of land occupation for CO2 emissions to realistically reflect the consequences of consumers’ decisions.

  6. Library Resource
    Journal Articles & Books
    December, 2015
    Brazil

    This study assessed the socioecological resilience of family farms in three land reform settlements in Mato Grosso, Brazil, located in the ecologically threatened Cerrado biome. Using focus groups, a household survey, and analysis of soil samples we characterized farming systems and quantified indicators of resilience, which we contextualized with a qualitative analysis of distributions of power and access to rights and resources.

  7. Library Resource
    Journal Articles & Books
    December, 2010
    Brazil

    The Brazilian tropical savanna (Cerrado), encompassing more than 204 million hectares in the central part of the country, is the second richest biome in Brazil in terms of biodiversity and presents high land use pressure. The objective of this study was to map the land cover of the Cerrado biome based on the segmentation and visual interpretation of 170 Landsat Enhanced Thematic Mapper Plus satellite scenes acquired in 2002. The following land cover classes were discriminated: grasslands, shrublands, forestlands, croplands, pasturelands, reforestations, urban areas, and mining areas.

  8. Library Resource
    Journal Articles & Books
    December, 2015
    Australia, Brazil, Canada, United States of America, India, Russia, China

    Groundwater vulnerability assessment is an important task in water resources and land management. The most sophisticated among the vulnerability assessment techniques is the GIS-based DRASTIC model. However, despite its popularity, it is marred with excessive subjectivity glitches; little research has been conducted to address the shortcomings associated with this method. This study investigates various issues regarding the application of the GIS-based DRASTIC model through a critical review of relevant literatures.

  9. Library Resource
    Journal Articles & Books
    December, 2014
    Brazil

    Tropical coastal wetlands form complex and dynamic ecosystems based on a mixture of vegetation, soil, and water components. Optical remotely sensed data have often been used to characterize and monitor these ecosystems, which are among the environments most threatened by climate change and anthropogenic activity worldwide.

  10. Library Resource
    Journal Articles & Books
    December, 2013
    Brazil

    Environmental fragility models are important decision tools for policy makers as they help quantify environmental sensitivity and understand the relationship between human activities and environmental quality. The objective of this study was to evaluate three different environmental fragility models within the Brazilian rainforest region and to use the results to develop environmental zone classes. Two rural river basins located in Ibiuna, Sao Paulo state, Brazil, were studied.

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