Mangatu: a Production Forest with Major Protection Value

Authors: P.F. Olsen
Publication: New Zealand Journal of Forestry, Volume N.Z.J.For. 1970, Issue N.Z.J.For. 15(2) 1970, pp 169-183, Aug 1970
Publisher: New Zealand Institute of Forestry

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Abstract: The geology, geomorphology and recent history of deforestation are briefly reviewed and the coincidence of recent increase in flood deposition rates and deforestation is noted.
The activity of the N.Z. Forest Service in reforestation of part of the Waipaoa head waters is documented and a description given of the debris control techniques employed in the more critical eroding areas.
The experience of the ten years following planting in Homestead Creek is more particularly described, as are the results apparently attributable to reforestation.
A theoretical basis for these results is postulated and the conclusions in terms of future forest practice derived. In addition, some measure of the return from protection and production forest investment is attempted in terms of downstream values and future industrial potential.

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