Articles by Author: R E Schulze

Search results for R E Schulze

We found 8 results for you
  1. The Hydrological Effects of a Wildfire in a Eucalypt Afforested Catchment

    Item type: Journal Article • Journal: South African Forestry Journal
    A high-intensity wildfire through a humid, upland catchment which was partially afforested to Eucalyptus fastigata, markedly increased stormflows and caused high soil losses off the afforested slopes. Total streamflow yield was unchanged but baseflow was reduced after the fire. The...
  2. Nomographic and cartographic estimation of <em>eragrostis curvula</em> yields in natal

    Nomographic and cartographic estimation of <em>eragrostis curvula</em> yields in natal

    The solution of a multivariate regression function for the yield estimation of Eragrostis curvula in Natal is presented in nomographic and cartographic form. The yield expression which is a complex function of, inter alia, mean annual precipitation, major soil group...
  3. Modelling crop growth and crop water relations in South Africa: Past achievements and lessons for the future

    Modelling crop growth and crop water relations in South Africa: Past achievements and lessons for the future

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Mathematical simulation of crop growth and water relations has become indispensable to agricultural science and practice. A critical assessment of how modelling has contributed to the development of crop science and to the management of crop production and natural resources...
  4. HIV/AIDS messages as a spur for conversation among young South Africans?

    HIV/AIDS messages as a spur for conversation among young South Africans?

    Item type: Journal Article • Journal: African Journal of AIDS Research
    HIV/AIDS messages are often deliberately puzzling so as to increase the chance for them to be used as food for conversation. The South African health organisation ‘loveLife,’ for instance, uses messages that include complicated rhetorical expressions in their media campaigns,...
  5. Application of the Indicators of Hydrological Alteration method to the Mkomazi River, KwaZulu-Natal, South Africa

    Application of the Indicators of Hydrological Alteration method to the Mkomazi River, KwaZulu-Natal, South Africa

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Hydrological regimes play a major role in structuring the biotic diversity within river ecosystems and hydrological variation is recognised as a primary driving force within those ecosystems. The US Nature Conservancy developed a method known as the Indicators of Hydrological...
  6. Climatic and Altitudinal Criteria for Commercial Afforestation with Special Reference to Natal

    Item type: Journal Article • Journal: South African Forestry Journal
    Criteria of altitude and climate such as mean annual precipitation, mean annual. January and July temperatures, mean daily maximum and minimum temperatures for January and July respectively and duration of soil moisture deficit are given for five main commercial tree...
  7. A new approach to modelling streamflow reductions resulting from commercial afforestation in South Africa

    A new approach to modelling streamflow reductions resulting from commercial afforestation in South Africa

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    The Department of Water Mfairs and Forestry has, for some time, needed a comprehensive tool to incorporate the impacts of commercial afforestation on water resources into water use authorisation and allocation processes. Simulation modelling on a national scale, using the...
  8. Potential impacts of climate change on the climatically suitable growth areas of <em>Pinus</em> and <em>Eucalyptus</em>: results from a sensitivity study in South Africa

    Potential impacts of climate change on the climatically suitable growth areas of <em>Pinus</em> and <em>Eucalyptus</em>: results from a sensitivity study in South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Global average surface temperature has increased by approximately 0.74 °C over the most recent 100-year period. At a regional level in South Africa, detectable changes in both the rainfall and temperature patterns have occurred in the past 50 years. Climate...