Journal of Forest Science, 2002 (vol. 48), issue 10
Computer simulation of fir forest dynamics in the Bieszczady Mountains in response to climate changeOriginal Paper
I. Kozak, V. Menshutkin, M. Jóźwina, G. Potaczała
J. For. Sci., 2002, 48(10):425-431 | DOI: 10.17221/11909-JFS 
Results of investigation of fir forest dynamics in the Bieszczady Mountains using a FORKOME (FORest KOzak MEnshutkin) model in response to climate changes are presented. The model was verified in field trials in 1998-2001 in a fir forest in forest district Procisne in the Bieszczady Mountains (Poland). Prediction of tree biomass and tree number was made for the next 600 years. The simulation demonstrated beech domination when mean annual temperature increases by 2°C while with a decrease in temperature by 2°C fir becomes dominant in the examined area. Both one simulation run and Monte Carlo simulation showed comparable results in statistical analysis....
Chrysopids and Hemerobiids (Plannipenia) of young spruce forests in the eastern part of the Czech RepublicOriginal Paper
J. Holuša, Ľ. Vidlička
J. For. Sci., 2002, 48(10):432-440 | DOI: 10.17221/11912-JFS
Chrysopids and Hemerobiids were studied using Malaise traps in young spruce forests in the eastern part of the Czech Republic. A total of 12 species were found. The most abundant species were eurytopic Chrysopa carnea, Chrysopa perla, Hemerobius humulinus and Hemerobius pini associated with conifers. The seasonal flight activity of these species is discussed.
Natural regeneration at different microclimatic sites in Zatec regionOriginal Paper
I. Kupka
J. For. Sci., 2002, 48(10):441-450 | DOI: 10.17221/11913-JFS
Natural regeneration is an important part of close-to-nature forestry. However, natural regeneration also has either natural or technological limits. Among the most important natural limits are a low sum of precipitation and site type. The study concentrates on Žatec region where the long term average sum of precipitation is only 440-450 mm per year. Dry periods during the vegetation time are quite frequent. The study was conducted on clear cut area, stand edge, shelterwood area and stand interior. The results showed the highest population densities in a shelterwood system, the lowest in the stand interior. On...
The influence of climatic factors on the health condition of forests in the Silesian LowlandOriginal Paper
J. Stanovský
J. For. Sci., 2002, 48(10):451-458 | DOI: 10.17221/11910-JFS
In the nineties of the 20th century, forest ecosystems in the Silesian Lowland were seriously disturbed by a large disaster with massive increase in the occurrence of biotic and abiotic harmful agents. The majority of old growth was cut there especially that with allochthonous spruce (Picea excelsa). Relations between the course of climatic factors (annual precipitation amount, annual average temperature) and the level of unregulated felling were studied.
Nutrient status of natural and healthy sissoo forest and declining plantation sissoo forest (Dalbergia sissoo, Roxb.) in NepalOriginal Paper
S.P. Sah, P.K. Jha, N. Lamersdorf
J. For. Sci., 2002, 48(10):459-466 | DOI: 10.17221/11929-JFS
Sissoo (Dalbergia sissoo, Roxb.) is a nitrogen fixing leguminous tree species with natural habitat in the lowland region of Nepal called Terai up to an altitude of 1,000 m. For the last few years, this economically important tree species has been dying rapidly in the plantation forests. On the contrary, its status in the natural forest in riverine areas has been unknown yet. The paper compares the nutrient status of natural and healthy sissoo forest with declining plantation sissoo one. It is evident from this study that both stands do not differ very much with respect to their soil and plant nutrients. Therefore it was concluded that the...