Spectral characterization and regression-based classification of forest damage in Norway spruce stands in the Czech Republic using Landsat Thematic Mapper data

1995 ◽  
Vol 16 (7) ◽  
pp. 1261-1287 ◽  
Author(s):  
N. J. Lambert ◽  
J. Ardo ◽  
B. N. Rock ◽  
J. E. VOGELMANN
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Thematic Mapper ◽  
Spectral Characterization ◽  
Forest Damage ◽  
Landsat Thematic Mapper ◽  
The Czech Republic ◽  
Thematic Mapper Data ◽  
Spruce Stands

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 production and static stability in IUFRO thinning experiments in the Czech Republic

2021 ◽  
Vol 67 (No. 4) ◽  
pp. 185-194
Author(s):  
David Dušek ◽  
Jiří Novák ◽  
Dušan Kacálek ◽  
Marian Slodičák
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Static Stability ◽  
The Czech Republic ◽  
Tree Stability ◽  
Enhanced Production ◽  
Spruce Decline ◽  
Production Safety ◽  
Spruce Stands ◽  
Volume Production

Despite recent issues, Norway spruce remains the most important commercial tree species which might be demanded henceforth for its broadly utilizable wood. Even before foresters faced both the bark beetle outbreaks and spruce decline, spruce monospecific stands were known to be prone also to other damage due to snow and wind. On this basis, measures that help prevent such failures were looked for, which resulted in the establishment of international IUFRO experimental series focused on impacts of different thinning regimes on stability and production of spruce stands. The thinning treatments differed in numbers of trees removed and retained on the site when dominant height of crop trees was reached or allowable cut in non-crop trees was accumulated. Also effects of different width of skid trails were tested. The study summarizes the results from the two IUFRO experiments in the Czech Republic. Effects of thinning regimes on spruce were found positive though thinning reduced the total volume production of wood while improving crop-tree stability which enhanced production safety. Different widths of skid trails had no effect on wood increment. Early thinning of spruce can be used to prevent their damage. No such measure, however, can alleviate the spruce decline.

scholarly journals Soil CO2 efflux in young Norway spruce stands with different silviculture practices

2013 ◽  
Vol 61 (6) ◽  
pp. 1845-1851
Author(s):  
Jiří Rosík ◽  
Tomáš Fabiánek ◽  
Irena Marková
Keyword(s):  
Czech Republic ◽  
Soil Temperature ◽  
Norway Spruce ◽  
Seasonal Changes ◽  
Soil Co2 Efflux ◽  
Co2 Efflux ◽  
Soil Co2 ◽  
The Czech Republic ◽  
Spruce Stands

Seasonal changes of soil CO2 efflux were investigated in two young Norway spruce stands with different silviculture practices (below and above thinning) during the 2010–2012 at the Ecosystem Station of Rájec – Němčice (the Drahanská vrchovina Highland, the Czech Republic). Soil CO2 efflux was almost about 20% higher in the plot with above thinning compared to the plot with bellow thinning. Soil CO2 efflux between the studied plots was significant in the studied years 2010 and 2012. Soil CO2 efflux was positively related to soil temperature in the both studied spruce plots. Silviculture practices had effect on soil CO2 efflux in studied young Norway spruce stand.

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