Journal of Forest Science, 2009 (vol. 55), issue 3
Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
P. L. Peri, G. Martínez Pastur, M. V. Lencinas
J. For. Sci., 2009, 55(3):101-111 | DOI: 10.17221/66/2008-JFS 
Net photosynthetic rate (A) and stomatal conductance (gs) of leaves of Nothofagus pumilio and N. an-tarctica seedlings were measured at different photosynthetic photon flux densities (PPFDs, 20, 150, 250, 500, 750, 1,000, 1,500 and 2,200 μmol/m2/s) and after 60 minutes of shade to determine the rate of photosynthetic induction after seedling transition from low to high PPFD. A and gs were also measured to evaluate the responses to water stress and the tolerance to waterlogging. N. pumilio had higher A values than N. Antarctica for all light intensities measured...
Effect of initial height of seedlings on the growth of planting material of Norway spruce (Picea abies [L.] Karst.) in mountain conditions
A. Jurásek, J. Leugner, J. Martincová
J. For. Sci., 2009, 55(3):112-118 | DOI: 10.17221/97/2008-JFS
Common ways of nursery cultivation and sorting the planting material of mountain provenances of Norway spruce (Picea abies [L.] Karst.) are connected with the risk of undesirable narrowing of the genetic spectrum of populations. Investigations in spruce plantations established by different planting materials found out very good growth (total height is 125 cm 9 years after outplanting) and health status of these slowly growing seedlings planted in extreme mountain conditions. In order to prevent the genetic spectrum narrowing, we recommend to cultivate all seedlings including smaller outsorted (commonly culled) ones. The smallest seedlings can...
Effects of spruce, beech and mixed commercial stand on humus conditions of forest soils
T. Fabiánek, L. Menšík, I. Tomášková, J. Kulhavý
J. For. Sci., 2009, 55(3):119-126 | DOI: 10.17221/70/2008-JFS
A pedological survey was carried out in a spruce monoculture, beech stand, and in a mixed stand at a field research station in Rájec-Němčice of the Institute of Forest Ecology (IFE), Mendel University of Agriculture and Forestry (MUAF) in Brno in the region of the Drahanská Upland in 2004-2006. The aim of the paper was to evaluate (i) humus reserves and forms, (ii) soil reaction, (iii) reserves of total carbon and nitrogen for the forest floor layers and (iv) carbon/nitrogen ratio. Soil analyses were carried out on samples taken at the end of the growing season in a spruce, beech and mixed stand. The highest reserves of...
Changes in the fragmentation and ecological stability of the Morava River floodplain forest in the course of the 20th century
I. Machar
J. For. Sci., 2009, 55(3):127-136 | DOI: 10.17221/98/2008-JFS
This paper presents the results of an analysis of the changes in the fragmentation and ecological stability of the floodplain forest geobiocoenoses in the Protected Landscape Area Litovelské Pomoraví, Czech Republic. Using GIS methods, it was determined that the fragmentation within the study area had increased slightly and the ecological stability of the landscape had decreased slightly between the years 1938 and 2006, although the latter remained on a fairly high level. The data reflect the anthropogenic conditionality of the floodplain forest ecosystem and show that an anthropogenically conditioned geobiocoenosis may attain a relatively high level...
Findings from the application of coal combustion by-products (CCB) for forest reclamation on spoil banks of the North Bohemian Brown Coal Basin
P. Čermák, V. Ondráček
J. For. Sci., 2009, 55(3):137-144 | DOI: 10.17221/91/2008-JFS
Coal combustion by-products (stabilizate, FDG gypsum) generated by the thermal power station in Ledvice were tested on an above-level dump of the Bílina Mine in the North Bohemian Brown Coal Basin during the reclamation of its surface for forestry purposes. A part of the experimental object was treated with coal combustion by-products at a dose of 700-1,000 t/ha that were incorporated into the soil profile by very deep ploughing and the other part was left untreated for comparison. A one-year preparatory agrocycle was conducted on the entire experimental object - growing of Leucosinapis alba for green manuring and for reforestation bareroot...