Journal of Forest Science, 2020 (vol. 66), issue 2
Dynamics of mixed lowland forests in Central Bohemia over a 20-year periodOriginal Paper
Karel Vančura, Anna Prokůpková, Daniel Bulušek, Václav Šimůnek, Vojtěch Hájek, Ivo Králíček
J. For. Sci., 2020, 66(2):49-62 | DOI: 10.17221/6/2020-JFS 
The paper deals with the effect of environmental factors and management on various mixed lowland forests in the Medník National Natural Monument, Czech Republic, over a 20-year period. The objectives were to evaluate the structure, production, dynamics and radial growth in relation to climatic conditions in the mixed hornbeam-oak, herb-rich beech and spruce forest stands. The tree density decreased by 8.5% (to 120-1,364 trees.ha-1), while stand volume increased by 28.0% (to 244-767 m3.ha-1) from 1998 to 2018. Large-leaved lime (Tilia platyphyllos Scop.) and Norway spruce (Picea abies /L./ Karst.) showed...
Analysis of wood chipping capacity of the Bandit 990XP chipper - case studyOriginal Paper
Mariusz Kormanek
J. For. Sci., 2020, 66(2):63-69 | DOI: 10.17221/146/2019-JFS
According to the data of the Central Statistical Office, there has been an increase in forest cover in Poland from 27.8% to 29.6% over the last 25 years. This increase contributed to an increase in the possibility of wood obtaining and processing for energy purposes. The aim of the study was to analyse the efficiency of a chipping machine manufactured by the American Company Bandit Industries (Bandit 990XP chipper) based on the working day chronometer. The study was carried out in specific conditions related to the place of the chipper application because the machine was used to process the material obtained from standing trees in the framework of...
An introduction to the distribution of carbon stocks in temperate broadleaf forests of northern IranOriginal Paper
Mohadeseh Ghanbari Motlagh, Sasan Babaie Kafaky, Asadollah Mataji, Reza Akhavan, Behzad Amraei
J. For. Sci., 2020, 66(2):70-79 | DOI: 10.17221/149/2019-JFS
Northern forests of Iran are among the most important plant communities in Iran due to their dynamic and diverse vegetation composition and fertile soils. There is little information about carbon stocks of these forests. In the present study, above- and belowground carbon stocks of trees, litter, herbs and soil organic carbon stock at three selected sites of these forests were calculated using random plots and non-destructive sampling. The FAO method was used for carbon estimation of trees and Walkley-Black method was used for soil carbon stock and carbon coefficient was estimated directly. The results showed that both the tree carbon stocks and soil...
Effect of different pre-treatments on seed germination of Prosopis juliflora and Dalbergia sissoo: a step towards mutation breedingOriginal Paper
Muhammad Javed Asif, Atif Ali, Muhammad Zaid Mazhar, Ayyoub Tanvir, Bilal Zia, Iqra Anmbreen, Muhammad Zohaib Anjum, Muhammad Shabir Mahr
J. For. Sci., 2020, 66(2):80-87 | DOI: 10.17221/64/2019-JFS
For improving the seed germination of Prosopis juliflora and Dalbergia sissoo different treatments were tested, including side cutting, abrasion, overnight soaking in boiling water, scalding in actively boiling water for 1 minute and immersion in 30%, 60% and 95% H2SO4 solution. Results showed that abrasion with sandpaper and side cutting were the most effective methods to break seed dormancy in both species, while scalding in actively boiling water for 1 minute, overnight soaking and different concentrations of H2SO4 gave low to zero seed germination. Based on the positive effects of scarification...