scholarly journals Uncertainty estimation of biomass expansion factors for Norway spruce in the Czech Republic

2007 ◽  
Vol 64 (2) ◽  
pp. 133-140 ◽  
Author(s):  
Aleksi Lehtonen ◽  
Emil Cienciala ◽  
Fedor Tatarinov ◽  
Raisa Mäkipää
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Uncertainty Estimation ◽  
The Czech Republic ◽  
Biomass Expansion Factors

scholarly journals Evaluation of the provenance plot “Hrubá Skála” (Northern Bohemia) with grand fir at the age of 36 years

2017 ◽  
Vol 63 (No. 2) ◽  
pp. 75-87 ◽  
Author(s):  
Fulín Martin ◽  
Novotný Petr ◽  
Podrázský Vilém ◽  
Beran František ◽  
Dostál Jaroslav ◽  
...  
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Coastal Region ◽  
Tree Height ◽  
Douglas Fir ◽  
Stem Volume ◽  
Silver Fir ◽  
The Czech Republic ◽  
The North ◽  
Oregon Cascades

The article aims to evaluate the research provenance plot established in 1980 in locality No. 214 – Hrubá Skála (in the north of the Czech Republic), where nine provenances of grand fir (Abies grandis (Douglas ex D. Don) Lindley) provided in the framework of the International Union of Forest Research Organizations project, and one provenance of grand fir, Norway spruce, silver fir and Douglas-fir from a standard commercial source are tested. We present the results of tree height, stem DBH, stem volume production and health status after 36 years. The results correspond with similar experiments in the Czech Republic and abroad and suggest that grand fir provenances from Vancouver Island (British Columbia, Canada) and the Washington (USA) State coastal region show the best production features, while the Oregon Cascades, Idaho and Montana provenances grow more slowly. Comparison with other tree species indicates that the production of grand fir at the investigated age exceeds the production of both Norway spruce and silver fir, and equalizes or gently exceeds even Douglas-fir.

scholarly journals Changes in the nutrition and health status of young Norway spruce stands in the Krkonoše Mts. in a 17-year period

2017 ◽  
Vol 63 (No. 8) ◽  
pp. 344-354
Author(s):  
Novotný Radek ◽  
Lomský Bohumír ◽  
Šrámek Vít
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Nutrient Concentrations ◽  
Height Increment ◽  
Forest Stands ◽  
Future Health ◽  
The Czech Republic ◽  
N Nutrition ◽  
Spruce Stands ◽  
Spruce Needles

For 17 Norway spruce stands located in the Krkonoše Mts. in the Czech Republic a long-term assessment of defoliation, height increment, foliage concentration of nutrients (N, P, Ca, K, Mg) and stress elements (S, F) was carried out. The results show a decrease of defoliation and a slight increase of height increment, which occur in accordance with the decreasing concentration of sulphur in spruce needles. However, neither sulphur concentration nor height increment trends are significant, suggesting that both the main pollution abatement and the growth resumption took place already in the 1990’s. During the late 1990’s the average spruce defoliation was greater than 35%, while since 2007 it has fluctuated between 18 and 25%, which corresponds with the figures for the forest stands located in the other regions of the Czech Republic. The evaluation of single nutrient concentrations detected occasional deficiencies of P and Mg at individual plots. The good N nutrition (&gt; 15 mg N·g<sup>–1</sup>) in combination with a significantly decreasing trend of P, K and Ca concentrations in Norway spruce needles may potentially constitute a problem in regard to both the future health and the stability of forest stands in the studied region.

scholarly journals Norway spruce in forest ecosystems of the Czech Republic in relation to different forest site conditions

2011 ◽  
Vol 57 (No. 11) ◽  
pp. 514-522 ◽  
Author(s):  
V. Mansfeld
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Forest Ecosystems ◽  
Biological Diversity ◽  
National Forest Inventory ◽  
Management Decision ◽  
Site Classification ◽  
Forest Site ◽  
The Czech Republic ◽  
Technical Discussion

The paper analyses the representation of Norway spruce (Picea abies [L.] Karst.) (hereinafter spruce) in relation to different conditions of forest sites. The analysis is based on data from the National Forest Inventory conducted in the Czech Republic in 2001-2004 (hereinafter NFI), stratified according to units of the Forest Site Classification System (Pl&iacute;va 1971, 2000). Results of the analysis provide a structured image of the current share of spruce. The formerly published information on the natural share of spruce was corroborated and the recommended share of spruce in the target species composition of the spruce management system was analyzed. The analysis documents the applicability of NFI data in the technical discussion concerning the future form of forest ecosystems in the Czech Republic. The results can be used as the groundwork for concrete forest management decision-making and will contribute to the study of the biological diversity of forest ecosystems.

scholarly journals Application of Mg-fertilizers to prevent and to decrease Norway spruce yellowing

2019 ◽  
Vol 51 (Special Issue) ◽  
pp. 43-48 ◽  
Author(s):  
V.V. Podrázský ◽  
S. Vacek ◽  
J. Remeš ◽  
I. Ulbrichová
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Forest Decline ◽  
Forest Stand ◽  
Considerable Improvement ◽  
Air Pollutant ◽  
Ecological Analysis ◽  
The Czech Republic ◽  
Stand Management ◽  
Areas Of Interest

Yellowing of the Norway spruce is a relatively common problem in many areas of the Czech Republic. In some of them, it is also connected with forest decline; it was studied in the Šumava (Bohemian Forest) Mts. and in the western part of the Krušné hory Mts. This unfavourable phenomenon is initiated by several ecological as well as anthropic processes, one of the most important being the imbalance of forest stand nutrition. Particular reasons lead to the deficiency of nutrients, especially of magnesium. Solution of this undesirable trend is the profound ecological analysis and cause-oriented treatments. Besides lowering the air pollutant input, fertilization with deficient nutrients is a successful treatment in the forest stand management in affected areas. In the areas of interest, the application of a relatively small amount of appropriate fertilizer (SILVAMIX Mg) led to considerable improvement in the defoliation dynamics and yellowing progress since the first years after use.

Evaluating Recent and Future Climatic Suitability for the Cultivation of Norway Spruce in the Czech Republic in Comparison with Observed Tree Cover Loss between 2001 and 2020

Forests ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1687
Author(s):  
Petr Čermák ◽  
Tomáš Mikita ◽  
Jan Kadavý ◽  
Miroslav Trnka
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Tree Cover ◽  
Climatic Suitability ◽  
Change Analysis ◽  
The Czech Republic ◽  
Salvage Logging ◽  
Normal Period ◽  
Bioclimatic Envelope ◽  
Climatic Normal

The high portion of secondary Norway spruce in Central European forests constitutes a major problem because a significant part of these forests is moving further away from their original bioclimatic envelope. The precise evaluation and prediction of climatic suitability are needed for the implementation of forest adaptation strategies. We evaluated climatic suitability for the cultivation of Norway spruce in the Czech Republic forests, making use of the Random Forest combined learning statistical method. The evaluation presented was based on a comparison with the climatic normal period 1961–1990; change analysis was carried out for the period 1991–2014 and projected for 2021–2040 and 2041–2060. We found that suitable conditions for Norway spruce will remain only in 11.3% by area of Czech forests in the period 2041–2060 vs. 46.0% in the period 1961–1990. We also compared tree cover loss data (using Global Forest Watch) from 2001 to 2020 with statistics on salvage logging. In the period, the cover loss affected 19.5% of the area with more than 30% Norway spruce. The relationships between relative tree cover loss and the percentage of salvage logging caused by insects were conclusive and statistically significant.

scholarly journals Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and its role in the Czech forests

2019 ◽  
Vol 65 (No. 2) ◽  
pp. 41-50
Author(s):  
Jan Mondek ◽  
Martin Baláš
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Pseudotsuga Menziesii ◽  
Douglas Fir ◽  
Point Of View ◽  
Ground Vegetation ◽  
Vegetation Diversity ◽  
The Czech Republic ◽  
Native Tree Species ◽  
The Stability

The presented study summarizes the results concerning the effects of cultivation of Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco) in the Czech Republic. It focuses on more recent results, published especially in the last decades, it includes also older relevant data. It describes the intensity of production as well as non-production forest functions in the conditions of the Czech Republic. It analyses the research results concerning the volume and value production in comparison with native tree species, also documents effects on soil and herb vegetation diversity in forest ecosystems, and from point of view of stability and cultivation in the last period. Main target is defined by the comparison with the Norway spruce, which can be with advantages substituted partly by this species, with favourable impact on amount and value of the timber production, on the forest soil and ground vegetation biodiversity status. Also the stability of forest stands can be supported considerably. This species represents important alternative to the Norway spruce in lower and middle altitudes and it can contribute considerably to the competitiveness of the Czech forestry.

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