Foliage and fine roots in terms of growth efficiency - a comparison between European beech and Norway spruce at early growth stages

B. Konôpka and J. Pajtík
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B. Konôpka: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovak Republic
J. Pajtík: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovak Republic

Journal of Forest Science, 2013, vol. 59, issue 11, 436-446

Abstract: The quantification of stems (under- and overbark), foliage and fine roots in 14-year-old stands of European beech and Norway spruce grown on the same site were evaluated. Therefore, 60 trees of each species were sampled, dry masses of stems and foliage were established and expressed by allometric equations with stem diameter as an independent variable. The spruce allocated a much larger portion of biomass into the foliage than beech. The equations on a tree level were constructed also for specific leaf area and one-sided projected leaf area. Moreover, the quantity and morphological characteristics of fine roots in both stands were surveyed through soil coring. While standing stocks of fine roots were similar in the stands of both tree species, significant interspecies differences occurred in morphological properties of roots. Growth efficiency, expressing annual stem production on a variety of foliage and fine root parameters was calculated. The largest differences, specifically fivefold in favour of spruce, were found in growth efficiency based on a number of root tips.

Keywords: allometric equations; fine root morphology; leaf area; stem diameter; stem mass production; interspecies differences (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnljfs:v:59:y:2013:i:11:id:56-2013-jfs

DOI: 10.17221/56/2013-JFS

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