Scots pine stand establishment with special emphasis on uncertainty and cost-effectiveness,the case of northern Finland |
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Authors: | Anssi Ahtikoski Virpi Alenius Kari Mäkitalo |
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Institution: | 1.Rovaniemi Research Unit,Finnish Forest Research Institute,Rovaniemi,Finland |
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Abstract: | The effect of uncertainty on the cost-effectiveness of alternative chains of stand establishment in northern Finland was examined.
The data were from a reforestation study of Scots pine (Pinus sylvestris L.) consisting of 288 sample plots, which were measured with respect to regeneration success. The study design included four
site-preparation methods (patch scarification, ploughing, prescribed burning and disk trenching) combined with three reforestation
methods (sowing, planting with containerized seedlings and planting with bare-rooted transplants). Initial reforestation density
was 2,500 spots or seedlings per hectare, and the regeneration success was modeled as probability with two thresholds, namely
500 and 1,100 saplings. On formerly spruce-dominated as well as pine-dominated sites the most cost-effective chain was ploughing
and planting with containerized seedlings, when threshold was 1,100 saplings per hectare. However, with threshold of 500 saplings
the best performer was ploughing and direct sowing on both sites. |
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