Effects of thinning and soil properties on accumulation of carbon, nitrogen and phosphorus in the forest floor of Norway spruce stands

1995 ◽  
Vol 77 (1-3) ◽  
pp. 1-10 ◽  
Author(s):  
Lars Vesterdal ◽  
Mads Dalsgaard ◽  
Claus Felby ◽  
Karsten Raulund-Rasmussen ◽  
Bruno Bilde Jørgensen
Keyword(s):  
Soil Properties ◽  
Norway Spruce ◽  
Forest Floor ◽  
Nitrogen And Phosphorus ◽  
Spruce Stands

scholarly journals Carbon, nitrogen, C/N ratio and their stand heterogeneity in the soil of Norway spruce stands

2010 ◽  
Vol 58 (5) ◽  
pp. 413-416
Author(s):  
Valerie Vranová ◽  
Ladislav Holík ◽  
Tomáš Rohlík ◽  
Klement Rejšek ◽  
Pavel Formánek
Keyword(s):  
Soil Respiration ◽  
Soil Properties ◽  
Norway Spruce ◽  
Biochemical Properties ◽  
Forest Stand ◽  
Soil Horizons ◽  
Soil Biochemical Properties ◽  
Dense Forest ◽  
Spruce Stands ◽  
Forest Humus

This work is aimed to determine the effect of thinning of young spruce stands in Moravian-Silesian Beskids Mts. on concentrations and relative stand heterogeneity of Cox, Nt and C/N in soil. Concentrations of Cox and Nt were significantly higher in individual horizons of forest humus floor. The thinning did not influence significantly (P > 0.05) concentrations of Cox, Nt and C/N ratio in particular soil horizons, with the exception of C/N ration in E horizon. Relative stand heterogeneity of the studied soil properties was mostly higher in soil of dense forest stand. The values of relative stand heterogeneity for individual horizons ranged from 3.1 to 61.9 % in case of Cox, from 4.9 to 55.2 % for Nt and from 5.3 to 42.5 % for C/N ratio. Results of this work are useful to predict stand heterogeneity of soil biochemical properties which are known to correlate with especially Cox in soil on studied plots, especially soil respiration and enzymatic activities.

scholarly journals  Norway spruce litterfall and forest floor in the IUFRO thinning experiment CZ 13 – Vítkov

2013 ◽  
Vol 59 (No. 3) ◽  
pp. 107-116 ◽  
Author(s):  
J. Novák ◽  
M. Slodičák ◽  
D. Dušek ◽  
D. Kacálek
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Forest Floor ◽  
Dry Mass ◽  
Growth Conditions ◽  
Young Age ◽  
Lower Amount ◽  
Spruce Stands ◽  
Humus Horizons

The effect of thinning on litterfall and decomposition of biomass was investigated in Norway spruce IUFRO thinning experiment (CZ-13), Czech Republic. The experiment was established in 1971 in an 8-year-old spruce stand on former farmland. Quantity and quality of litterfall and biomass from humus horizons were analysed in two treatments (1C &ndash; no thinning, 2T &ndash; heavy thinning at the young age). Forest floor was investigated in 2002, 2004, 2005&nbsp;and 2009 and litterfall was observed in the period 2002&ndash;2009. Accumulated dry mass in forest floor after 39&nbsp;years of existence of spruce stands continually decreased until the age of 46 years (from 80&ndash;100 to 30&ndash;50 Mg&middot;ha<sup>&ndash;1</sup>). Under thinned stand, a lower amount of dry mass was observed compared to the control. Although mean total annual litterfall was the same in both treatments (5.3 Mg&middot;ha<sup>&ndash;1</sup>), the observed trend indicates a possible effect of thinning on the higher rate of decomposition. With the exception of calcium (2002&ndash;2005 samples) we found the forest floor lower in nutrients and litterfall higher in nutrients in thinned plot compared to the control. Our results supported the theory that early thinning is an appropriate silvicultural strategy helping spruce to cope with growth conditions on sites naturally dominated by broadleaves. &nbsp;

scholarly journals Effects of long-term fertilisation on soil properties in Scots pine and Norway spruce stands

Silva Fennica ◽  
2014 ◽  
Vol 48 (1) ◽  
Author(s):  
Anna Saarsalmi ◽  
Pekka Tamminen ◽  
Mikko Kukkola
Keyword(s):  
Soil Properties ◽  
Norway Spruce ◽  
Scots Pine ◽  
Spruce Stands

Changes in forest-floor chemistry caused by a birch admixture in Norway spruce stands

2000 ◽  
Vol 130 (1-3) ◽  
pp. 253-264 ◽  
Author(s):  
P.-O. Brandtberg ◽  
Heléne Lundkvist ◽  
Jan Bengtsson
Keyword(s):  
Norway Spruce ◽  
Forest Floor ◽  
Spruce Stands

scholarly journals Imitated Whole Tree Harvesting Show Negligible Effect on Economic Value of Spruce Stands

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 841
Author(s):  
Iveta Desaine ◽  
Annija Kārkliņa ◽  
Roberts Matisons ◽  
Anna Pastare ◽  
Andis Adamovičs ◽  
...  
Keyword(s):  
Norway Spruce ◽  
Economic Value ◽  
Forest Types ◽  
Spruce Stands ◽  
The Difference ◽  
Growing Conditions ◽  
Whole Tree Harvesting ◽  
Whole Tree ◽  
Tree Harvesting

The increased removal of forest-derived biomass with whole-tree harvesting (WTH) has raised concerns about the long-term productivity and sustainability of forest ecosystems. If true, this effect needs to be factored in the assessment of long-term feasibility to implement such a drastic forest management measure. Therefore, the economic performance of five experimental plantations in three different forest types, where in 1971 simulated WTH event occurred, was compared with pure, planted and conventionally managed (CH) Norway spruce stands of similar age and growing conditions. Potential incomes of CH and WTH stands were based on timber prices for period 2014–2020. However, regarding the economics of root and stump biomass utilization, they were not included in the estimates. In any given price level, the difference of internal rate of return between the forest types and selected managements were from 2.5% to 6.2%. Therefore, Norway spruce stands demonstrate good potential of independence regardless of stump removal at the previous rotation.

scholarly journals A Novel Approach to Evaluate the Effect of Neighboring Trees and the Orientation of Tree Social Area on Stem Radial Increment of Norway Spruce Trees

Forests ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 163
Author(s):  
Jan Světlík ◽  
Jan Krejza ◽  
Pavel Bednář
Keyword(s):  
Norway Spruce ◽  
Tree Growth ◽  
Growth Models ◽  
Explanatory Power ◽  
Radial Increment ◽  
Important Indicator ◽  
The Czech Republic ◽  
Novel Approach ◽  
Spruce Stands ◽  
Social Area

Tree growth depends on many factors such as microsite conditions, vitality, and variations in climate and genetics. It is generally accepted that higher growth indicates both an economic benefit and better vitality of any tree. Here we use a modified approach of evaluating tree social area to study mutual tree competition based on the orientation and shape of trees social area. The investigation was performed in nine Norway spruce stands in the Czech Republic. The objective of this study performed from 2008 to 2012 was to quantify relative tree radial increments with respect to the lowest and highest competition found in specific sectors of tree social area (AS). Specific groups of trees (tree classes) were evaluated according to their classes (dominant, co-dominant and sub-dominant) and their composition status in ninety-degree sectors of AS using established classifying rules. The results showed that a spatially-available area (AA) is an inappropriate parameter for predicting tree growth, whereas AS provided robust explanatory power to predict relative radial growth. Tree size was observed as an important indicator of relative radial increments. A significantly positive correlation was found for a radial increment of sub-dominant trees with the lowest competition from western directions; whereas a negative correlation was observed when the lowest competition was observed from eastern directions. For dominant trees, there was an evident growth reaction only when more than 50% of the AS was oriented towards one of the cardinal points. Individual differences in the orientation of tree AS may be important parameters with regard to competition and its spatial variability within an area surrounding a particular tree and deserve more detailed attention in tree growth models and practice.

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