Journal of Forest Science, 2002 (vol. 48), issue 11

Health condition of young spruce stands growing in Poľana in different altitudesOriginal Paper

I. Čaňová

J. For. Sci., 2002, 48(11):469-474 | DOI: 10.17221/11914-JFS  

This paper presents the first results of chlorophyll fluorescence measurements on assimilatory apparatus of Norway spruce. Three young spruce stands located in various altitudes (600, 1,050 and 1,250 m above sea level) were selected for the measurements. Chlorophyll fluorescence a was measured by a portable fluorimeter PEA. These measurements were performed on three needle year-classes. We found greater stand damage on the areas which are located in higher altitudes, but only at the end of growing season.

Juglans × intermedia Carr. - an interesting finding in the Židlochovice Forest EnterpriseOriginal Paper

M. Hřib, J. Koblížek, P. Maděra

J. For. Sci., 2002, 48(11):475-481 | DOI: 10.17221/11915-JFS  

A grown-up specimen of Juglans ×intermedia Carr. walnut was accidentally found in the stand of black walnut (Juglans nigra L.) in the Židlochovice Forest Enterprise in the forest district Velký Dvůr, Stand No. 224 D10. The tree was photographed, leafy shoots and fruits were sampled for later analyses. The paper brings a description of growth habit, rough bark, morphology of leaves, current year shoots and fruits. Discussed are dissimilarities from the parental species (J. nigra and J. regia L.).

Assessing the occurrence of Vitis vinifera subsp. sylvestris (C. C. Gmelin) Hegi in the Czech RepublicOriginal Paper

P. Maděra, M. Martínková

J. For. Sci., 2002, 48(11):482-485 | DOI: 10.17221/11916-JFS  

The objective of the paper is taxonomic evaluation of a woodland grape individual found near the Dyje river. The finders (Vicherek et al. 2000) determined the liana as Vitis vinifera subsp. sylvestris. Based on microscopic observations of bud sections some doubts were cast on the classification to the subspecies of sylvestris. Correct determination will be possible only on the basis of further observations of the found individual and its comparison with real members of the taxon (Čenkov, SR).

Soil conditions of black walnut (Juglans nigra L.) stands in the alluvium of the Svratka and Jihlava riversOriginal Paper

M. Hřib, J. Kulhavý, M. Sáňka, J. Lesná

J. For. Sci., 2002, 48(11):486-498 | DOI: 10.17221/11917-JFS  

Physical, chemical and microbiological properties of soils were studied in black walnut (Juglans nigra L.) stands and compared with those in stands of natural species composition, in mixed stands of black walnut with linden and in pure oak stands. The objectives were to consider a possibility of black walnut planting at floodplain sites in the alluvial area of Southern Moravia. The first results did not show any worsening of soil properties and soil production potential. A positive amelioration effect of soil- improving species was proved in black walnut stands.

Estimate of economic impacts of climate change upon Czech forestryOriginal Paper

L. Šišák, K. Pulkrab

J. For. Sci., 2002, 48(11):499-507 | DOI: 10.17221/11918-JFS  

From the economic point of view the issue is comprehensive namely for its long-term character. At present, there is little experience in complexly understood economic calculations concerning the effect of climate change on forest management. Therefore a new methodology had to be proposed to solve the assigned task, i.e. to analyse the results of research on the effect of climate change on forest management. The issue is closely related to changes in production characteristics of commercial species, i.e. site quality and species composition or health conditions and rotation period of each species and stand. In this case it concerns with a higher proportion...

The financing of non-market forest servicesOriginal Paper

I. Kolenka, K. Pulkrab

J. For. Sci., 2002, 48(11):508-511 | DOI: 10.17221/11919-JFS  

The article deals with issues of non-market forest services. There is a persistent issue complicating the quantification of adequate subsidy to forest owners - non-existence of market with such forest services. Forest services financing can be made objective by implementation of the following steps: 1. Earmarking of non-market forest services that are becoming market subjects gradually. 2. Earmarking of non-market forest services that create a secondary product of wood production function. 3. Quantification of demand for services. 4. Quantification of costs necessary to cover the demand for those forest services. 5. Quantification of losses caused...