Evaluation of annual ring width and ring density development following 
fertilisation and thinning
of Scots pine

Mörling, Tommy

doi:10.1051/forest:2001003

Cited by 58 publications

(59 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Stand 1 indicates a completely opposite trend. This trend largely copies the horizontal course of density, wherein the density decreases with the increasing width of the tree rings, similarly to what was stated by Mörling (2002) or Ivković et al (2013), as mentioned earlier. Table 4 shows a comparison of our results with those of the authors who investigated the density of Scots pine wood in the region of Central Europe.…”

Section: Resultssupporting

confidence: 61%

Influence of site conditions and silvicultural practice on the wood density of Scots pine (Pinus sylvestris L.) - a case study from the Doksy locality, Czech Republic

Schönfelder¹,

Zeidler²,

Borůvka³

et al. 2017

J. For. Sci.

View full text Add to dashboard Cite

Schönfelder O., Zeidler A., Borůvka V., Bílek L. (2017): Influence of site conditions and silvicultural practice on the wood density of Scots pine (Pinus sylvestris L.) -a case study from the Doksy locality, Czech Republic. J. For. Sci., 63: 457-462.After spruce, the Scots pine (Pinus sylvestris Linnaeus) is the second most important commercial coniferous tree species in the Czech Republic. However, we are finding out that awareness of the variability of properties, and possibilities to affect them, are noticeably small for this type of tree species in our conditions. The goal of this study is to primarily evaluate the importance of site conditions, silvicultural measures and other factors for the density of Scots pine wood in the Doksy locality in the Czech Republic. The Doksy locality is represented by three forest stands with different silvicultural history. Samples were taken from each stand, the basal and central parts of which were subsequently processed for test samples with dimensions of 20 × 20 × 30 mm. Wood density at 12% moisture content was ascertained in the test samples. The highest density value of 0.541 g·cm -3 was reached in a stand that is regenerated using the shelterwood method with long regeneration period, and the lowest density value of 0.488 g·cm -3 was recorded in a stand that was regenerated using the clear-cutting method. From a forestry perspective, it can be further stated that the wood density of Scots pine is also affected by the site conditions and position of samples in the trunk.

show abstract

Section: Resultssupporting

confidence: 61%

Influence of site conditions and silvicultural practice on the wood density of Scots pine (Pinus sylvestris L.) - a case study from the Doksy locality, Czech Republic

Schönfelder¹,

Zeidler²,

Borůvka³

et al. 2017

J. For. Sci.

View full text Add to dashboard Cite

show abstract

“…higher ring wood densities are associated to smaller radial increments : . Evidences of this inverse relationship for Norway spruce have been claimed in different thinning experiments [23,28]. However, it should be noted that ring width and its maximum density are also influenced by climatic variability [13].…”

Section: Conceptual Frameworkmentioning

confidence: 99%

A collection of functions to determine annual tree carbon increment via stem-analysis

Bascietto

Scarascia‐Mugnozza

2004

Ann. For. Sci.

View full text Add to dashboard Cite

-Stem analysis process is commonly employed in a wide range of applications of forest importance. We developed a program to compute stem increments in terms of volume, biomass and carbon storage. The stem-analysis process involves the felling of the tree, the extraction of a number of cross-sections from the stem and the measuring of ring-width series on each section. The synchronization of ringwidth series provides a number of tree-and stand-related measures including stem growth pattern, diameter at breast height and tree height growth trend, site-index assessment, timber-quality assessment. Relevant features of the program include: (i) tables and charts can be handled in the "R" environment or exported to any spreadsheet program; (ii) algorithms are independent from the ring width measuring device; (iii) the computation of stem volume, yearly-and mean volume increment is provided as well as the lateral surface area, stem carbon pool, its yearlyand mean increment and associated measurement errors. Forest biomass destructive surveys can usefully apply stem-analysis techniques in order to assess forest past carbon increment trend and set up the basis for non-destructive future carbon surveys. stem analysis / carbon pool / annual carbon increment / error budget / R

show abstract

“…This method allows to measure density microvariations [20,22] as the radial step of measurement may be as small as 25 µm [23,24]. The investigated width is 1000 µm in the tangential direction.…”

Section: Microdensity Determinationsmentioning

confidence: 99%

Relationships between the intra-ring wood density assessed by X-ray densitometry and optical anatomical measurements in conifers. Consequences for the cell wall apparent density determination

Decoux

Varcin²,

Leban³

2004

Ann. For. Sci.

View full text Add to dashboard Cite

-The objective of this work is to compare anatomical measurements to wood density variations within annual rings of three major softwood species, Norway spruce, Scots Pine and Silver Fir. The six selected annual rings were sampled within a database of thousand microdensitometric profiles measured on wood samples collected in Finland and France. Each of the six studied annual rings represents one average profile of wood density for a given age class and age ring width. The dimensions of the tracheids are performed in the radial-tangential plane by using two different planimetric methods. The wood density profile within each ring is calculated simply by the mean of the tracheid dimensions and by using a constant value for the cell wall density. We have verified that the knowledge of the (i) tracheid geometry and (ii) the usually admitted value of the cell wall density allows us to calculate intra ring wood density profiles which are similar to the X-rays wood density profiles in terms of variations but very different in average. Thus it appears necessary to calibrate by using an apparent cell wall density varying inside the rings and being far weaker than the effective cell wall density of 1460 kg/m³ as it is usually admitted in the literature.wood density / wood anatomy / Picea abies / Pinus silvestris / Abies alba Résumé -Variations intra-cerne de densité du bois et mesures optiques des caractéristiques anatomiques de résineux. Conséquences pour la détermination de la densité apparente de paroi. L'objectif de ce travail est comparer des mesures anatomiques à des mesures de variations de densité du bois à l'intérieur de cernes annuels pour trois essences résineuses importantes, l'épicéa commun, le sapin pectiné et le pin sylvestre. Les cernes sélectionnés sont choisis dans un échantillon de plusieurs milliers de cernes prélevés dans des arbres en France et en Finlande. Chaque cerne étudié représente pour une essence le profil moyen de densité d'une classe d'âge compté depuis la moelle et d'une classe de largeur de cerne. Les caractéristiques géométriques des trachéides sont mesurées par deux méthodes planimétriques différentes dans le plan radial-tangentiel. Le profil de densité du bois est calculé simplement à partir des dimensions des trachéides et de la densité de la matière ligneuse. Pour que le profil calculé de densité du bois corresponde au profil obtenu par microdensitométrie nous avons montré qu'il est nécessaire faire varier le facteur de calibration, appelé densité apparente de la paroi cellulaire, à l'intérieur des cernes avec des valeurs bien plus faibles que 1460 kg/m³, la valeur habituellement utilisée dans la littérature. densité du bois / anatomie / Picea abies / Pinus silvestris / Abies alba

show abstract

Evaluation of annual ring width and ring density development following fertilisation and thinning of Scots pine

Cited by 58 publications

References 16 publications

Influence of site conditions and silvicultural practice on the wood density of Scots pine (Pinus sylvestris L.) - a case study from the Doksy locality, Czech Republic

Influence of site conditions and silvicultural practice on the wood density of Scots pine (Pinus sylvestris L.) - a case study from the Doksy locality, Czech Republic

A collection of functions to determine annual tree carbon increment via stem-analysis

Relationships between the intra-ring wood density assessed by X-ray densitometry and optical anatomical measurements in conifers. Consequences for the cell wall apparent density determination

Contact Info

Product

Resources

About