Journal of Forest Science, 2004 (vol. 50), issue 6

Restoration of forest soils on reforested abandoned agricultural lands

V.V. Podrázský, I. Ulbrichová

J. For. Sci., 2004, 50(6):249-255 | DOI: 10.17221/4622-JFS  

Restoration of forest soil character after the change of agricultural land use has not been studied yet despite the large areas reforested since the late 40ies of the last century. This process takes place throughout Europe to an increasing extent at present. The reformation of forest soils was studied in the area of Český Rudolec town: Natural Forest Area 16 - Czech-Moravian Uplands, altitude 600-630 m a.s.l., bedrock is built of granites and gneisses, soil type is Cambisol, forest site type 5K1. The process of restoration of a new humus form was analysed in plantations of American red oak (Quercus rubra), Swedish birch (Betula pendula),...

Risk evaluation of the climatic change impact on secondary Norway spruce stands as exemplified by the Ktiny Training Forest Enterprise

P. Čermák, L. Jankovský, P. Cudlín

J. For. Sci., 2004, 50(6):256-262 | DOI: 10.17221/4623-JFS  

The paper proposes a method of assessing the potential risks of the future development of stands in relation to a climatic change. To assess risks of the future development of a stand simple point scales have been worked up based on primary properties of a site and a stand according to data of the forest management plan (FMP). In assessing the health condition, the risk of damage to stands by Armillaria sp. in the felling age was evaluated on the basis of a present attack by Armillaria sp. and also defoliation of the crown primary structure assessed during a simple field examination. The evaluation was carried out in the region of...

Development of air pollutant deposition, soil water chemistry and soil on Šerlich research plots, and water chemistry in a surface water source

V. Lochman, V. Mareš, V. Fadrhonsová

J. For. Sci., 2004, 50(6):263-283 | DOI: 10.17221/4624-JFS  

In 1986 (1987) research plots were established in a forest stands on the south-western slope of Šerlich Mt., Orlické hory Mts. (Kristina Colloredo-Mansfeld - Forest Administration Opočno), at the altitude of 950 to 970 m, to study deposition, chemistry of precipitation and soil water and development of soil chemistry. The plots were established on a clear-cut area, in a young stand and a mature stand of spruce, in a mature beech stand, and in an advanced growth of spruce and European mountain ash. The content of solutes in creek water was studied at the same time. Since 1993 the concentration of substances in precipitation water intercepted in the...

Logistic regression approach to the prediction of tree defoliation caused by sawflies (Hymenoptera: Symphyta)

J. Holuša, K. Drápela

J. For. Sci., 2004, 50(6):284-291 | DOI: 10.17221/4625-JFS  

A relationship between the abundance of phytophagous insects assessed from soil samples (in the case of Cephalcia lariciphila) or yellow sticky boards (in the case of T. nigritus) and percentage of defoliated trees was characterised by logistic regression.

Assessment of non-wood-producing functions of the forest as forest services to the public

J. Sebera

J. For. Sci., 2004, 50(6):292-299 | DOI: 10.17221/4626-JFS  

One of the elementary conditions for a successful incorporation of forest ecosystems into the socio-economic system, which also enables to determine the effectiveness of expenditure on environment conservation, is to define their value with possible subsequent valuation. The issue closely relates to the actual assessment of forest services to the public with respect to the non-wood-producing functions of the forest. A methodology was worked out for the assessment of forest services to the public with respect to the non-wood-producing functions of the forest, which makes it possible to characterize the influence of these forest services in time in the...