Journal of Forest Science, 2005 (vol. 51), issue 9
Some aspects of alder decline along the Lužnice River
I. Vyhlídková, D. Palovčíková, M. Rybníček, P. Čermák, L. Jankovský
J. For. Sci., 2005, 51(9):381-391 | DOI: 10.17221/4573-JFS 
Alder decline along watercourses is one of the marked manifestations of tree decline in the Czech Republic. Local decline of alder trees is documented in the Czech Republic for about 15 years. The aim of this paper is to evaluate causes of alder decline and assess health conditions of other species of riparian stands at 2 localities on the medium reach of the Lužnice River. Effects were studied of abiotic and biotic stressors on the health condition of tree species. No fungal pathogen was found in tissues of declining alders which would be present in all trees and which could be considered to be the main causal agent of the decline. Even an occurrence...
Impact of soil conditioners on the growth of European ash (Fraxinus excelsiorL.) on dumps
P. Bulíř
J. For. Sci., 2005, 51(9):392-402 | DOI: 10.17221/4574-JFS
The effects of soil conditioners TerraCottem, Frisol, Bio-algeen and fertilisers Silvamix Forte and Cererit on the survival rate and growth of European ash seedlings until the stage called established plantation were observed on two experimental plots with different anthropogenic substrates. Eight-year experiments showed that under the given conditions the tested agents fulfilled the declared effects only partially. The application of TerraCottem was statistically insignificant both in the survival rate and in the growth. In the applied dose, Frisol manifested itself as an agent that may cause problems with the survival of plants, but at the same time...
Effects of the thickness of rotary-cut veneers on properties of plywood sheets. Part 1. Compressibility of plywood materials
J. Hrázský, P. Král
J. For. Sci., 2005, 51(9):403-411 | DOI: 10.17221/4575-JFS
The paper summarizes results of the institutional research aimed at the determination of compressibility or values of the reduction of thickness of compressed plywood sheets. Assessing the effect of thickness and thickness tolerances of veneers to a value of compressibility in relation to production parameters was carried out on the collection of plywood whole-beech sheets of the nominal veneer thickness of 1.5 mm. The plywood sheets were manufactured as seven-ply ones and urea-formaldehyde resin DUKOL S was used for their manufacture. Following characteristics were assessed: thickness differences, size of shrinkage, compressibility of veneers. Sheets...
From timber management to forest management: an initial discussion on forest management evolution
M. S. Iftekhar
J. For. Sci., 2005, 51(9):412-429 | DOI: 10.17221/4576-JFS
Forests have been subject to human intervention since the inception of human civilization. With enhanced knowledge, understanding and capacity humans exert an increasing pressure and influence on forests. Forests in general have undergone different ownership patterns. The requirements for forests have changed over time. The objectives of forest management are shifting from timber production to biodiversity conservation and nature protection. On the other hand, in many places the forests are dwindling due to the anthropic pressure. The management paradigms are changing in response to these triggering mechanisms. In this paper an attempt has been made...