Articles by Keyword: Remote Sensing

Search results for Remote Sensing

We found 37 results for you
  1. A national range inventory for the Kingdom of Lesotho ‘n nasionale opname van die weivelde van die koningkryk van Lesotho

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    With the need for an understanding of the nation's rangelands, the Division of Range Management of the Kingdom of Lesotho has undertaken a national range inventory. This resource study has utilized as aids in this task, the up‐to‐date techniques of...
  2. Development of a ground truthing method for determination of rangeland biomass using canopy reflectance properties

    Development of a ground truthing method for determination of rangeland biomass using canopy reflectance properties

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Veld condition assessment and establishment of grazing capacity norms provide guidelines for the formulation of sustainable practices. However, conventional monitoring methods are becoming inadequate to meet future challenges, where quantification of spatial and temporal variation is required. This study proposes...
  3. Production and physiological responses of Italian ryegrass and white clover grown in monocultures and mixed stands

    Production and physiological responses of Italian ryegrass and white clover grown in monocultures and mixed stands

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Ryegrass and clover, when grown under optimal conditions in mixed stands interact in response to available light energy. With other resources non-limiting, pasture production is determined by the efficiency with which solar radiation is intercepted by canopies and converted into...
  4. Biomass production and water use efficiency of grassland in KwaZulu-Natal, South Africa

    Biomass production and water use efficiency of grassland in KwaZulu-Natal, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Using the results from a long-term grazing trial in the Dry Highland Sourveld of the KwaZulu-Natal province, we prepared a water use efficiency value (the ratio of the increment in annual biomass to total annual evapotranspiration) for this rangeland type...
  5. Challenges and opportunities in the use of remote sensing for C<sub>3</sub> and C<sub>4</sub> grass species discrimination and mapping

    Challenges and opportunities in the use of remote sensing for C<sub>3</sub> and C<sub>4</sub> grass species discrimination and mapping

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Changes in the composition of plant functional type (PFT) activities are expected to accompany a changing climate. In tropical montane grasslands, such changes are predicted to follow shifts in the percentage cover and abundance of species following the C3 and...
  6. The vegetation of Malilangwe Wildlife Reserve, south-eastern Zimbabwe

    The vegetation of Malilangwe Wildlife Reserve, south-eastern Zimbabwe

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The vegetation of Malilangwe Wildlife Reserve in Zimbabwe (39 378 ha) was classified and mapped in 2003 using an integrated approach of ground-based measurement and remote sensing. Environmental variables, structure and composition of the tree, shrub and herbaceous layers were...
  7. Forest inventory in the digital remote sensing age

    Forest inventory in the digital remote sensing age

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Applications of sampling theory together with the technical developments in the field of remote sensing have opened new paths in forest inventory. This paper presents an overview of ongoing research in the field of automatic feature extraction and pattern recognition,...
  8. Modeling woody vegetation resources using Landsat TM imagery in northern Namibia

    Modeling woody vegetation resources using Landsat TM imagery in northern Namibia

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    In 1995 a forest inventory covering northern Namibia was initiated, based on stratified systematic field sampling of plots with a radius of up to 30 m. In these plots detailed tree parameters were measured. Due to security problems the most...
  9. Remote sensing from space—present and future applications in forestry, nature conservation and landscape management

    Remote sensing from space—present and future applications in forestry, nature conservation and landscape management

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Past studies have suggested that sound knowledge about the reflectance characteristics of objects could be of great value in understanding the physical, chemical, and the spatial properties of features on our planet. These characteristics can be assessed remotely, and the...
  10. Broad-scale distribution patterns of sardine and their predators in relation to remotely sensed environmental conditions during the KwaZulu-Natal sardine run

    Broad-scale distribution patterns of sardine and their predators in relation to remotely sensed environmental conditions during the KwaZulu-Natal sardine run

    Item type: Journal Article • Journal: African Journal of Marine Science
    The annual movement of South African sardine Sardinops sagax up the east coast of South Africa, known as the ‘sardine run’, was investigated using data from aerial surveys for the period 1988–2005 and compared with remotely sensed sea surface temperature...