Journal of Forest Science, 2023 (vol. 69), issue 5
Intensive initial care of silver fir using improving compounds: A way to support diverse forests?Original Paper
Channa Suraweera, Martin Baláı, Josef Gallo, Giuseppe D'Andrea, Stanislav Vacek, Jiĝí Remeı
J. For. Sci., 2023, 69(5):179-192 | DOI: 10.17221/178/2022-JFS 
In some cases, it is difficult to promote climax tree species in the forest stand composition. In the Czech Republic, silver fir (Abies alba Mill.) is a typical example. This study offers an evaluation of the use of two improving compounds for tree plantations in the initial stage of growth in Central Bohemia. In the experiment, we measured the initial growth performance of a young fir plantation treated with a brassinolide compound (concentration 1 : 100 and 1 : 200) and Bio-Algeen® prior to planting and compared it with control treatment: we assessed height, root collar diameter, vitality and mortality rate during the...
Effect of forest management on the genetic diversity of Abies hidalgensis, a threatened species with restricted distributionOriginal Paper
Elena Rosales-Islas, Pablo Octavio-Aguilar
J. For. Sci., 2023, 69(5):193-204 | DOI: 10.17221/13/2023-JFS
Abies hidalgensis is an endemic species from the state of Hidalgo, Mexico, that has been registered only in nine fragmented relict populations that have a total of 1 000 individuals among them. Intensive forest management takes place in five of the populations under specific programs focused on Pinus spp. Still, it is necessary to know the impact of these activities on the genetic diversity of the threatened species, if restoration and conservation strategies are to be proposed. The aim of this work was to estimate the effect of forest management on the genetic structure of A. hidalgensis using seven nuclear molecular...
The effect of thinning intensity on sap flow and growth of Norway spruceOriginal Paper
Ina Zavadilová, Justyna Szatniewska, Marko Stojanoviĉ, Peter Fleischer Jr., Lukáı Vágner, Marian Pavelka, Peter Petrík
J. For. Sci., 2023, 69(5):205-216 | DOI: 10.17221/17/2023-JFS
Forest thinning can be used as an adaptive measure to improve the growth and resistance of Norway spruce forests affected by climate change. The impact of different thinning intensities on sap flow, growth, and tree water deficit of 40-year-old Norway spruce was tested. High thinning intensity (–61% of basal area) resulted in increased tree-level sap flow compared to the control (+27%), but it caused a decrease in the stand-level transpiration (–34%) due to reduced leaf area index. Low-intensity thinning (–28% basal area), high-intensity thinning, and control showed similar responses of sap flow to vapour pressure deficit and...
Estimation of land cover changes and biomass carbon stock in north-eastern hill forests of BangladeshOriginal Paper
Tahmina Afroz, Md. Giashuddin Miah, Hasan Muhammad Abdullah, Md. Rafiqul Islam, Md. Mizanur Rahman
J. For. Sci., 2023, 69(5):217-227 | DOI: 10.17221/111/2022-JFS
Forests are atmospheric CO2 sinks, but their losses and degradation accelerate the emissions of carbon stored as a sink. Deforestation and forest degradation are widespread in Bangladesh, but their impact on greenhouse gas (GHG) emissions is unknown. We assess land use and land cover (LULC) change and forest loss in this study by classifying different Landsat satellite imagery with a focus on forest cover loss from 1989 to 2020. Tier 1 standards were used to estimate the carbon removal and emissions from a small-scale tropical forest. Over the last three decades, the forest area has decreased by 2.40%, 3.74% and 7.52%, respectively....