Biomass partitioning and growth efficiency in four naturally regenerated forest tree species

Konôpka, Bohdan; Pajtík, Jozef; Moravčík, Martin; Lukáč, Martin

doi:10.1016/j.baae.2010.02.004

Cited by 44 publications

(37 citation statements)

References 25 publications

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“…30 mm manifested rather a constant value (0.13-0.14) of the ratio. The same phenomenon was recorded in previous experiments, not only in young spruce (Pajtík et al 2008) but also in Fagus slyvatica, Pinus sylvestris, and Quercus petraea (Konôpka et al 2010). Bernier et al (1995) showed in their review paper that the root/ shoot ratio in Norway spruce starts from about 0.33, implying a larger contribution of roots to total tree biomass at young stages.…”

Section: Biomass Allocation On a Tree Levelsupporting

confidence: 88%

“…Lehtonen et al 2004;Wirth et al 2004). Konôpka et al (2010) showed that while the contribution of stem to total biomass increased for Norway spruce, contribution of branches, needles and especially roots decreased with increasing tree size. Since our previous work focused on a tree level, further work expressing tree biomass standing stock and structure on a stand level is required.…”

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confidence: 99%

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Canopy closure altered biomass allocation in young spruce stand

2015

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Growth intensity of particular tree components is controlled by a variety of factors and as a consequence, biomass allocation also changes over time. Since the allocation of biomass controls the carbon regime in a forest stand, tree standing stock and biomass structure, with regard to tree components: fine and coarse roots, stem, branches and needles, were estimated in a young Norway spruce stand based on repeated tree sampling, soil coring and allometric equations (modelled for 2009 and 2013, i.e. for 12-and 16-years-old trees). Large differences were found between the two models in the contribution of the tree components to aboveground biomass. Between the first and fifth year of the experiment, belowground to aboveground biomass ratio as well as short-lived to long-lived tree part ratio manifested decreasing tendencies. At the same time, the stand possibly reached the maximum standing stock of both needles and fine roots. It is concluded that for biomass allocation estimates in young stands, not only stand-specific but also time-specific allometric relations should be constructed and implemented. Further, there appears to be a canopy closure threshold beyond which biomass allocation is different from the situation in sparse young spruce stands.

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Section: Biomass Allocation On a Tree Levelsupporting

confidence: 88%

mentioning

confidence: 99%

Canopy closure altered biomass allocation in young spruce stand

2015

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“…Our previous paper (KONÔPKA et al, 2010) indicated a certain tendency of biomass allocation patterns with regard to tree size. However, changes in biomass partitioning patterns were based on estimative height increments focusing at tree level.…”

Section: Introductionmentioning

confidence: 87%

“…Distinct changes in tree biomass allocation to the particular compartments with an increasing stand size (age) in young stages of European beech and Norway spruce were shown by KONÔPKA et al (2010). The paper indicated that while the contribution of stem to total aboveground biomass increased, the contribution to branches and foliages decreased with increasing stand size.…”

Section: Introductionmentioning

confidence: 92%

“…In this way, standing biomass stock of live trees in April of the current year as well as the quantity of trees which died in the period between Aprils of the consecutive years were estimated. Detailed descriptions of tree sampling, laboratory procedures, construction of allometric equations and estimations of tree standing biomass on a stand level are shown in the papers of PAJTÍK et al (2008) and KONÔPKA et al (2010).…”

Section: Site Descriptionmentioning

confidence: 99%

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Above-ground net primary productivity in young stands of beech and spruce

Pajtík¹,

Konôpka²,

Marušák³

2013

Forestry Journal

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One of the expected consequences of climate change and its inherent phenomena to forest ecosystems is the gradual modification of their tree species composition (i.e. expansion of resistant species instead of less resistant ones). Climate change accompanied with increasing temperatures and a lack of precipitations may present a threat especially to spruce stands in the European part of the temperate zone. European beech is one of the possible forest tree species which might replace the potentially endangered spruce. In this paper, we observed, by using a combination of continual measurements and destructive whole-tree sampling, standing stocks of above-ground biomass (i.e. stem, branches, and foliage) and its annual net primary productivity (NPP) in naturally regenerated young stands of beech and spruce. We intentionally selected a site where the changing climate conditions are better suited to the ecological demands of beech rather than spruce (the species is dominant in the observed area). We recorded only small differences in the standing stock of stems of the beech, if based on tons per ha. However, this is in favor of spruce if based on cubic meters per ha. The largest difference between the species was found for the standing stock of foliage, spruce retained three times the biomass of beech. Also, beech allocated more carbohydrates to stem than spruce. On the other hand, we estimated nearly the same production of foliages and branches in both stands.

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Carbon Sequestration in European Agroforestry Systems

Mosquera-Losada

Freese

Rigueiro-Rodríguez

2011

Advances in Agroforestry

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Agroforestry systems (AFS) are recommended for Europe through the European Rural Development Council regulation 1698/2005, in recognition of their role in reducing carbon (C) emissions and promoting C sequestration which would help to fulfil the Kyoto Protocol requirements. These systems have been found to be a good tool to reduce fire risk and C release in southern European countries. The implementation of AFS could also reduce C release to atmosphere because of the value given to non-timber products, thereby reducing chances for clear cutting of trees. Furthermore, the tree component in AFS will add C into the soil through litterfall and root decomposition, which takes place at deeper soil layers than under agronomic crops or pasture. Tree management practices such as regulating tree density and planting arrangement will influence the C sequestered in the system. Compared with the tree components, the understory components of AFS have less impact on the total C sequestration. The higher inputs of residues generated by the trees in AFS than in tree-less systems may cause high soil C sequestration potential, but soil C increase depends on the incorporation and mineralization of C in the soil, which are affected by understory crop management practices.

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Biomass partitioning and growth efficiency in four naturally regenerated forest tree species

Cited by 44 publications

References 25 publications

Canopy closure altered biomass allocation in young spruce stand

Canopy closure altered biomass allocation in young spruce stand

Above-ground net primary productivity in young stands of beech and spruce

Carbon Sequestration in European Agroforestry Systems

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