Review Paper

A review of management impacts on the soil productivity of South African commercial forestry plantations and the implications for multiplerotation productivity

  • Louis Titshall
  • Steven Dovey
  • Diana Rietz

Abstract

An overview of southern African research that has investigated the impact of management practices that can potentially affect the long-term site productivity of plantations is presented, with an emphasis of these impacts on soil productivity and with the implications for multiple-rotation site productivity. Activities that are most likely to cause long-term changes in soil productivity are identified as those causing high site disturbance during the inter-rotation period, notably ground-based mechanised operations and harvest residue management (including complete biomass removal) and, under some conditions, fertilisation. The impacts of these practices on soil and stand productivity are discussed from a southern African perspective. Knowledge gaps are identified and it is suggested that the immediate research priority is to identify meaningful indicators that are sensitive to change and that can be linked to stand production. Other key research focus areas are proposed and the need for a permanent long-term monitoring network is highlighted.

Keywords: compaction, indicators, long-term site productivity, nutrient, residue, site management, soil quality

Southern Forests 2013, 75(4): 169–183

Author Biographies

Louis Titshall
Institute for Commercial Forestry Research, PO Box 100281, Scottsville 3209, South Africa
Steven Dovey
Institute for Commercial Forestry Research, PO Box 100281, Scottsville 3209, South Africa
Diana Rietz
Institute for Commercial Forestry Research, PO Box 100281, Scottsville 3209, South Africa
Published
2013-11-13
Section
Articles

Journal Identifiers


eISSN: 2070-2639
print ISSN: 2070-2620