Journal of Forest Science, 2009 (vol. 55), issue 6
Quantification of nutrient content in the aboveground biomass of teak plantation in a tropical dry deciduous forest of Udaipur, India
J. I. Nirmal Kumar, R. N. Kumar, R. Kumar Bhoi, P. R. Sajish
J. For. Sci., 2009, 55(6):251-256 | DOI: 10.17221/107/2008-JFS 
This study was designed to evaluate the quantification of the nutrient content of aboveground biomass of teak plantation in a tropical dry deciduous forest of Udaipur, Rajasthan, India. The nutrient contents in the total biomass of teak in the plantation were 165.47 kg/ha N, 20.96 kg/ha P, 35.06 kg/ha K, 49.29 kg/ha Ca, 31.52 kg/ha Mg, 4.27 kg/ha Na, 4.06 kg/ha S and 3.21 kg/ha Cl. In total, 42.93% of the dry matter accounted for crown biomass (leaves, branches, twigs and reproductive parts), which in turn accounts for 60.93% N, 58.63% P, 54.30% K, 51.40% Ca, 62.5% Mg, 53.62% Na, 59.85% S and 60.74% Cl of the aboveground biomass, whereas 57.07% of...
Influence of temperatures and precipitation on radial increment of Orlické hory Mts. spruce stands at altitudes over 800 m a.s.l.
M. Rybníček, P. Čermák, T. Kolář, E. Přemyslovská, T. Žid
J. For. Sci., 2009, 55(6):257-263 | DOI: 10.17221/90/2008-JFS
Research on the influence of temperatures and precipitation on radial increment was carried out in spruce stands over ninety years old in the surroundings of Anenský vrch in the Orlické hory Mts. at altitudes over 800 m above sea level. To model diameter increment in dependence on climatic conditions, the standard tree-ring and correlation analysis together with the analysis of negative pointer years were used. The diameter increment has a statistically significant correlation with temperatures in July of each year in question. The growth of spruce is also affected to a statistically significant degree by precipitation in July of the previous year...
Growth of wild cherry (Prunus avium L.) in a mixture with other species in a demonstration forest
R. Stojecová, I. Kupka
J. For. Sci., 2009, 55(6):264-269 | DOI: 10.17221/71/2008-JFS
Wild cherry is one of the noble hardwood species that increase the biodiversity of our forests and at the same time it could increase the income for forest owners. The preconditions for achieving these goals are the high quality of stem and appropriate silvicultural management. This means that wild cherry should occupy the main crown layer in the stand. The height/frequency diagram depicts two groups of wild cherry trees in the stand belonging to dominant/codominant and suppressed tree classes. Height periodic increment (measured between the years 2001 and 2007) is significantly (p < 0.01) different in these two groups confirming that there...
Evaluating the shelterwood harvesting system after 25 years in a beech Fagus orientalis Lipsky) forest in Iran
M. R. Pourmajidian, N. E. Malakshah, A. Fallah, A. Parsakhoo
J. For. Sci., 2009, 55(6):270-278 | DOI: 10.17221/77/2008-JFS
Beech (Fagus orientalis Lipsky) is the most industrial commercial tree species among more than 80 broadleaved trees and shrubs in Hyrcanian forests. In this study some of the silvicultural properties of beech were studied under a shelterwood cutting system in a regeneration unit of 25 years old stand in Sangdeh forests of Iran. Tree height, diameter, canopy cover, variety of species, frequency at different stages of growth (seedling, sapling, thicket and pole) and tree density at juvenile phase were recorded in 431 circular 1,000 m2 sample plots before and after shelterwood cutting. Results indicated that tree density in the diameter...
Regeneration and game damage in the Krušné hory Mts. assessed on the basis of National Forest Inventory of the Czech Republic
L. Lehnerová, R. Marušák
J. For. Sci., 2009, 55(6):279-292 | DOI: 10.17221/99/2008-JFS
In 2001-2004 National Forest Inventory was realized in the Czech Republic. A great number of variables was measured giving rise to an extensive information database that can be used to assess the state and development of various quantitative and qualitative dendrometric characteristics. This work presents the results of regeneration state and game damage in the Krušné hory Mts. based on the data from both the National Forest Inventory and the second enlarged measurement carried out after five years that was done in a part of the Fláje preserve and enabled basic comparison with the rest of the area. For the calculation of data acquired in the old and...
An economic aspect of conversion of Scots pine (Pinus sylvestris L.) stands in the Polish Lowland
A. Węgiel, R. Jaszczak, G. Rączka, P. Strzeliński, D. Sugiero, A. Wierzbicka
J. For. Sci., 2009, 55(6):293-298 | DOI: 10.17221/105/2008-JFS
Pine stands at fertile sites need conversion into broadleaved or mixed forests. Yet, according to the age of stand, conversion may have different economic results. Therefore, in order to reduce costs of the process, the analysis on the basis of the potential income from wood sale has been done. The aim of the analysis has been to find an optimal date of conversion beginning. The date of conversion beginning has been fixed on the basis of the relation of the value of wood increment from the stands which need conversion to the value of average wood increment from stands conformable to the sites. By this means, three age intervals have been appointed.