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Managing for long-term site productivity
Authors: W.J. Dyck, P.N. BeetsPublication: New Zealand Journal of Forestry, Volume N.Z.J.For. 1987, Issue N.Z.J.For. 32(3) 1987, pp 23-26, Nov 1987
Publisher: New Zealand Institute of Forestry
Abstract: Forestry operations that remove nutrients from harvested material, displace nutrients into piled logging slash, and redistribute nutrients by disturbing topsoil, may have a negative impact on future site productivity. A comparison of the distribution ofN in mature radiata pine stands in Woodhill and Kaingaroa Forests shows that Woodhill has much lower N reserves than Kaingaroa with a greater proportion of its N capital in the trees. Evidence from Kaingaroa Forest indicates that logging slash and soil displacement may result in a substantial decline in productivity. Forest managers need to be aware of the implications of forest operations on long-term site productivity. More research is required to produce guidelines for different sites.