Articles by Keyword: Spatial Data

Search results for Spatial Data

We found 110 results for you
  1. Spatial patterns and determinants of fertility levels among women of childbearing age in Nigeria

    Spatial patterns and determinants of fertility levels among women of childbearing age in Nigeria

    Item type: Journal Article • Journal: South African Family Practice
    Background: Despite aggressive measures to control the population in Nigeria, the population of Nigeria still remains worrisome. Increased birth rates have significantly contributed to Nigeria being referred to as the most populous country in Africa. This study analyses spatial patterns...
  2. Reflection on the first five years of South Africa’s Acoustic Tracking Array Platform (ATAP): status, challenges and opportunities

    Reflection on the first five years of South Africa’s Acoustic Tracking Array Platform (ATAP): status, challenges and opportunities

    Item type: Journal Article • Journal: African Journal of Marine Science
    The Acoustic Tracking Array Platform (ATAP) is a marine science programme that monitors the movements and migrations of inshore marine animals along the South African coastline. Acoustically tagged animals are monitored by an expanded network of approximately 100 automated data-logging...
  3. Classification of marine bioregions on the east coast of South Africa

    Classification of marine bioregions on the east coast of South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    Marine bioregional planning requires a meaningful classification and spatial delineation of the ocean environment using biological and physical characteristics. The relative inaccessibility of much of the ocean and the paucity of directly measured data spanning entire planning regions mean that...
  4. Conservation Developments in South African Forestry

    Item type: Journal Article • Journal: South African Forestry Journal
    The historical development of environmental conservational activities within the South African Forestry Industry is followed, and the changing emphasis from the conservation of the remaining indigenous forests (pre-1900) to water conservation, to natural assets and unplanted areas is highlighted. The...
  5. Quantitative description of woody plant communities: Part I. An approach

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Various descriptive units for woody plant communities are proposed. These are the Evapotranspiration Tree Equivalent (ETTE), Browse Tree Equivalent (BTE) and Canopied Subhabitat Index (CSI), which describe the status of a woody community in terms of potential moisture use, value...
  6. Quantitative description of woody plant communities: Part II. Computerized calculation procedures

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Calculation procedures for various quantitative descriptive unit‐values are described. These procedures are divided into primary and secondary calculations. The former is then divided into the calculation of spatial tree volume and preliminary calculations regarding the complete quantitative description. The latter...
  7. Spatial variability of two selected soil properties in a semi- arid subcatchment of the Lower Great Fish River

    Spatial variability of two selected soil properties in a semi- arid subcatchment of the Lower Great Fish River

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The variability of the soluble salt content and the textural composition of the soil were investigated in a 28-ha sub-catchment of the Ecca River, a tributary of the Great Fish River. The frequency distribution of the soluble salts in the...
  8. Variations in floristic and palatability composition, yield of veld and of soil characteristics on a paddock scale

    Variations in floristic and palatability composition, yield of veld and of soil characteristics on a paddock scale

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Five parallel 900-m line-transects were laid out 100 m apart in relatively homogeneous veld. Floristic composition, yields of dry matter, soil forms and series, effective depth, clay content of the top and subsoil, and the pH of the topsoil were...
  9. Characterizing the hydraulic properties of a semi-arid catchment by means of sorptivity measurements and scaling theory

    Characterizing the hydraulic properties of a semi-arid catchment by means of sorptivity measurements and scaling theory

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The variability of soil sorptivity within a semi-arid catchment was investigated on a macro- (28 ha) and microscale (16 m2). In the macroscale study, sorptivity was measured at 176 sites using a falling hydraulic head technique. The mean sorptivity of...
  10. A simple method for supplementing long-term weather records in a maize-modelling exercise

    A simple method for supplementing long-term weather records in a maize-modelling exercise

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Missing weather data is a very real problem when using daily-incrementing crop growth simulation models. This is especially true in the case of daily air temperature and solar radiation data. The aim of this study was to compare two simple...