Paper presented at the IUFRO symposium “Intensive Forestry: The Role of Eucalypts”, held in Durban, South Africa, in September 1991

Productivity of Eucalyptus regnans Forest Regenerating after Bushfire

Published in: South African Forestry Journal
Volume 160, issue 1, 1992 , pages: 1–6
DOI: 10.1080/00382167.1992.9630403
Author(s): Peter Attiwill, Australia

Abstract

A natural forest of mountain ash was clearfelled in 1983 and burned by bushfire immediately after logging. The resulting natural regeneration has high productivity, with a mean volume increment close to 50 m3/ha per year, mean rate of biomass accumulation of 22 t/ha per year, and above-ground net primary production of 36 t/ha per year. It is one of the most highly-productive natural forest ecosystems in the world. There was no response to added fertiliser up to 500 kg/ha P and 1000 kg/ha N alone, together, and in combination with all essential elements. This fertiliser experiment can be viewed in reverse as a depletion experiment; from this view, the loss of nutrients resulting from clearfelling and burning does not result in a loss of productivity.

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