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Resultados de la búsqueda

Mostrando ítems 1 a 9 de 11.
  1. Library Resource
    Artículos de revistas y libros
    Diciembre, 2013
    Australia

    Atmospheric correction of high spatial resolution (10–30 m pixel sizes) satellite imagery for use in large-area land-cover monitoring is difficult due to the lack of aerosol optical depth (AOD) estimates made coincident with image acquisition. We present a methodology to determine the upper and lower bounds of AOD estimates that allow the subsequent calculation of a biophysical variable of interest to a pre-determined precision. Knowledge of that range can be used to identify an appropriate method for estimating AOD.

  2. Library Resource
    Artículos de revistas y libros
    Diciembre, 2013
    Australia

    Numerous land-cover change detection techniques have been developed with varying opinions about their appropriateness and success. Decisions on the selection of the most suitable change detection method is often influenced by the study region landscape complexity and the type of data used for analysis. For different climatic areas, the method that suits best the seasonal land-cover change identification remains uncertain.

  3. Library Resource
    Artículos de revistas y libros
    Diciembre, 2013
    Australia

    The spread of pest plants is a trans-boundary problem that causes losses to biodiversity and disrupts ecosystems. Much social research into, and policy development for, weeds has conceptualised their control as a problem facing individual landowners, rather than as a collective action problem. In the case of serrated tussock (Nassella trichotoma), a highly invasive, noxious weed that is widespread in southeastern Australia, landowners and government staff are acutely aware that this weed is a communal problem.

  4. Library Resource
    Artículos de revistas y libros
    Diciembre, 2012
    Australia

    Burnt area data, derived from the National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR) imagery, are validated in 11 regions of arid and semi-arid Australia, using three separate Landsat-derived burnt area data sets. Mapping accuracy of burnt extent is highly variable between areas and from year to year within the same area. Where there are corresponding patches in the AVHRR and Landsat data sets, the fit is good. However, the AVHRR data set misses some large patches.

  5. Library Resource
    Artículos de revistas y libros
    Diciembre, 2011
    Australia

    Summary The relationship between woody fuel consumption and fireline intensity was assessed using data collected at controlled fires and wildfires in south-western Western Australia, central Victoria and south-eastern New South Wales. The combined dataset consisted of fires in a range of dry eucalypt forests. Fire behaviour varied from slow, self-extinguishing prescribed burns to intense, fast—moving fires burning under conditions of extreme fire danger. Fireline intensity ranged from 50 kW m⁻ˡ to

  6. Library Resource
    Artículos de revistas y libros
    Diciembre, 2014
    Australia

    Information on wetland condition can be used for various decision-making processes for better management of this vital resource. Salt marshes are complex ecosystems that are not well mapped and understood. This research was conducted to assess the potential of high-spatial and high-spectral resolution satellite data to map and monitor salt-marsh vegetation communities of Micalo Island of New South Wales, Australia.

  7. Library Resource
    Artículos de revistas y libros
    Diciembre, 2011
    Australia

    Organic farming has risen in popularity with both farmers and consumers, with Australia having the largest area of certified organic land in the world. Australian governments have traditionally ignored the organic farming sector, while making policies that have hampered its further development. Although policies have become more favorable over time, recently, there has been a slight reversal in approach. Such a reversal in policy makes Australia unique when compared to the pro-organic policy developments in nearly all other developed countries.

  8. Library Resource
    Artículos de revistas y libros
    Diciembre, 2011
    Australia

    SummaryThe relationship between woody fuel consumption and fireline intensity was assessed using data collected at controlled fires and wildfires in south-western Western Australia, central Victoria and south-eastern New South Wales. The combined dataset consisted of fires in a range of dry eucalypt forests. Fire behaviour varied from slow, self-extinguishing prescribed burns to intense, fast—moving fires burning under conditions of extreme fire danger. Fireline intensity ranged from 50 kW m⁻ˡ to

  9. Library Resource
    Artículos de revistas y libros
    Diciembre, 2015
    Australia, Suecia, Europa, África

    This study is a contribution to a model intercomparison experiment initiated during a workshop at the 2013 IAHS conference in Göteborg, Sweden. We present discharge simulations with the conceptual precipitation–runoff model COSERO in 11 basins located under different climates in Europe, Africa and Australia. All of the basins exhibit some form of non-stationary conditions, due, for example, to warming, droughts or land-cover change.

  10. Library Resource
    Artículos de revistas y libros
    Diciembre, 2015
    Australia

    Detailed and accurate land cover data are widely used for various purposes, such as global land use change detection. This study aimed to investigate Australian land use and cover change by using 774 Landsat scenes in 2000 and 2010. The reference data included pictures or high-resolution images from Google Earth, global land cover data, Shuttle Radar Topography Mission data, and other literature.

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