Journal of Forest Science, 2013 (vol. 59), issue 6
Earthworm biomass and abundance, soil chemical and physical properties under different poplar plantations in the north of IranOriginal Paper
A. Salehi, N. Ghorbanzadeh, E. Kahneh
J. For. Sci., 2013, 59(6):223-229 | DOI: 10.17221/41/2012-JFS 
We evaluated earthworm abundance and biomass in plantations of different poplar species and clones as well as the effect of some soil chemical and physical properties on them. Even-aged poplar species and clones, planted at Safrabasteh Poplar Research Station about 18 years ago in the north of Iran, included: Populus deltoides Bartr. cv. 69/55 (P. d. 69/55), Populus deltoides Bartr. cv. 63/51 (P. d. 63/51), Populus euramericana Guinier. cv. 45/51 (P. e. 45/51), Populus euramericana Guinier. triplo (P. e. triplo), and Populus caspica Born M. (P. caspica), as...
The impact of juvenile tree species canopy on properties of new forest floorOriginal Paper
D. Kacálek, D. Dušek, J. Novák, J. Bartoš
J. For. Sci., 2013, 59(6):230-237 | DOI: 10.17221/3/2012-JFS
To keep forest soils fertile, forest practitioners plant mixed stands that are composed of both economically efficient trees such as conifers and soil-improving broadleaves. This is a mandated practice in the Czech Republic. As the new forest grows, it creates a dense canopy. The canopy is a principal source of organic matter to the forest soil. The formation of new forest humus is particularly important in first-generation forests on the former agricultural soil. Former meadow is a suitable site for forest floor and soil investigation since forest-floor humus covering the surface of the soil is a completely new layer. Both pure evergreen conifer...
Ground vegetation as an important factor in the biodiversity of forest ecosystems and its evaluation in regard to nitrogen depositionOriginal Paper
V. Buriánek, R. Novotný, K. Hellebrandová, V. Šrámek
J. For. Sci., 2013, 59(6):238-252 | DOI: 10.17221/16/2013-JFS
: We documented the current typological and phytosociological characterisation of the ground vegetation as an essential component of biodiversity in 154 Czech forest monitoring plots and to describe its changes during the past 15 years in regard to the deposition and concentration of nitrogen in the soil. Plots were classified as vegetation units in accordance with the UNECE and FAO nomenclature and on the basis of their potential natural vegetation and compared in terms of the occurrence and coverage of the indicative selected nitrophilous species. In all the soil horizons tested statistically significant differences in the C/N ratio were observed...
Development of target (crop) trees in beech (Fagus sylvatica L.) stand with delayed initial tending and managed by different thinning methodsOriginal Paper
I. Štefančík
J. For. Sci., 2013, 59(6):253-259 | DOI: 10.17221/9/2013-JFS
We evaluated the research on silviculture-production in the last 45 years in a 105-year-old beech stand, not tended up to its stand age of 60 years. Four alternatives (tending regime) were studied for development of the target (crop) trees. These were: (i) plot with heavy thinning from below (C degree according to the German Forest Research Institutes from 1902), (ii) plot with free crown thinning (thinning interval of 5 years), (iii) plot with free crown thinning (thinning interval of 10 years), and (iv) control plot (with no thinning). Target trees in the stand were selected and marked at the beginning of the study....