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Fine Root Production and Nitrogen Content in Roots of Pinus sylvestris L. after Clear-felling

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Effects of clear-felling on fine root production and N content in roots were studied in a Scots pine (Pinus sylvestris L.) stand. A plot was clear-felled and root samples were compared with a control plot. Even if reduced by 50%, a significant fine root (diameter<2 mm) growth was noticed up to 1 yr after the clear-felling. For live roots (diameters 2-4 and 4-6 mm) nitrogen content in root-wood and root-bark samples from the clear-felling, compared with the reference plot, were 30-50% already higher 2 months after the clear-felling. The difference did not increase in later comparisons. Nitrogen content in buttresses did not differ during the period studied, except for a higher percentage in bark at the clear-felling after two summers. A second study confirmed the results. It is suggested that there exists a continued nitrogen uptake in live roots after a clear-felling.
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Document Type: Research Article

Publication date: 2000-10-13

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