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Showing items 1 through 9 of 166.
  1. Library Resource
    a case study of Wewak, East Sepik Province, Papua New Guinea
    Conference Papers & Reports
    June, 2012
    Papua New Guinea

    This paper examines the various ways in which migrant settlers have gained and maintained access to land in the informal urban settlements of Wewak, the provincial capital of East Sepik Province, Papua New Guinea (PNG). Urban population growth in PNG and in Pacific Island states more generally is predicted to grow rapidly over the next two decades. Given the limited availability of formal housing for lower income people, it is likely that many will live in informal urban settlements on land owned by customary landowners.

  2. Library Resource
    Policy Papers & Briefs
    June, 2012
    Papua New Guinea

    This paper examines the various ways in which migrant settlers have gained and maintained access to land in the informal urban settlements of Wewak, the provincial capital of East Sepik Province, Papua New Guinea (PNG). Urban population growth in PNG and in Pacific Island states more generally is predicted to grow rapidly over the next two decades. Given the limited availability of formal housing for lower income people, it is likely that many will live in informal urban settlements on land owned by customary landowners.

  3. Library Resource
    Journal Articles & Books
    September, 2012
    Jordan, Western Asia

    The dry rangelands of West Asia and North Africa are fragile and severely degraded due to low rainfall and mismanagement of natural resources. Rainwater harvesting (RWH) interventions are used to increase soil moisture content, vegetation cover, and productivity. However, adoption of rainwater harvesting by communities is slow. To understand adoption constraints and to develop options for sustainable integration of rainwater harvesting, a benchmark watershed was established in the dry rangelands of Jordan.

  4. Library Resource
    Journal Articles & Books
    December, 2012

    Effects of incorporating multi-seasonal information into image classifications for large-scale land cover mapping are investigated. Data from four Landsat7 ETM+ scenes (March, May, June 2002, September 1999) were included step-wise into classifications by discriminant analysis to document their relevance for classification accuracy. The classification using all four images reached a maximum accuracy of 69.2%, significantly higher compared with single-date classifications and showing less fluctuations in classification accuracy.

  5. Library Resource
    Journal Articles & Books
    December, 2012

    Notions of land cover relating to physical landscape characters are readily captured by satellite imagery. Land use on the other hand relates more to the societal aspects of a landscape. We argue that much of the spatial configuration of landscape characters is related to land use and that satellite data can be used to represent and investigate interpretations of land use. We propose and demonstrate the joint use of a novel SRPC procedure for satellite imagery together with an explicit representation of category semantics.

  6. Library Resource
    Journal Articles & Books
    December, 2012

    A disaggregated approach to land cover survey is developed utilising data primitives. A field methodology is developed to characterise five attributes: species composition, cover, height, structure and density. The utility of these data primitives, as land cover ‘building blocks’ is demonstrated via classification of the field data to multiple land cover schema. Per-pixel classification algorithms, trained on the basis of the classified field data, are utilised to classify a SPOT 5 satellite image. The resultant land cover maps have overall accuracies approaching 80%.

  7. Library Resource
    Journal Articles & Books
    December, 2012
    Turkey

    This study presents spatial and temporal changes of carbon storages of forest timber biomass in a typical forest management unit of the northeastern part of Turkey. The effects of land-use and land-cover changes on the amount of carbon storage are analyzed. Temporal changes of carbon storage of the area were estimated using forest inventory data. The spatial distribution of carbon densities was mapped using Geographic Information Systems (GISs). As an overall change between 1984 and 2005, there was a net increase of 12,379 ha in forested areas.

  8. Library Resource
    Journal Articles & Books
    December, 2012
    Italy

    Semi-natural dry grasslands are habitats of high conservation concern. These ecosystems have not been extensively explored in the Tyrrhenian sector of the Italian peninsula, particularly in the Submediterranean climatic region. In order to address this issue and to define the synecology, syndynamics and syntaxonomy of calcareous grasslands in this area, we considered 127 phytosociological relevés. Our sampling was performed in the Lazio region according to a stratified sampling scheme based on homogeneous land units, defined by means of an ecological land classification process.

  9. Library Resource
    Journal Articles & Books
    December, 2012

    Airborne lidar provides accurate height information of objects on the earth and has been recognized as a reliable and accurate surveying tool in many applications. In particular, lidar data offer vital and significant features for urban land-cover classification, which is an important task in urban land-use studies. In this article, we present an effective approach in which lidar data fused with its co-registered images (i.e.

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

    Detailed, up-to-date information on intra-urban land cover is important for urban planning and management. Differentiation between permeable and impermeable land, for instance, provides data for surface run-off estimates and flood prevention, whereas identification of vegetated areas enables studies of urban micro-climates. In place of maps, high-resolution images, such as those from the satellites IKONOS II, Quickbird, Orbview and WorldView II, can be used after processing.

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