Template-Type: ReDIF-Article 1.0 Author-Name: Jakub Černý Author-Workplace-Name: Department of Silviculture, Forestry and Game Management Research Institute, Opočno, Czech Republic Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: Peter Haninec Author-Workplace-Name: Department of Forest Botany, Dendrology and Geobiocoenology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: Kateřina Novosadová Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: Zdeněk Patočka Author-Workplace-Name: Department of Forest Management and Applied Geoinformatics, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: Pavel Haninec Author-Workplace-Name: Department of Forest Botany, Dendrology and Geobiocoenology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: Petr Maděra Author-Workplace-Name: Department of Forest Botany, Dendrology and Geobiocoenology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Title: Provenance affects the growth and mortality of teak (Tectona grandis L.f.) plantations cultivated in central Nicaragua Abstract: Teak has been planted extensively by smallholders in Central America within reforestation programmes and has become one of the most valuable timbers. The five-year growth and mortality of teak cultivated in a plantation in central Nicaragua, representing sites at the low limit of teak ecological valence, were evaluated. From 2006 to 2010, 72 pure teak stands were established, with 48.93 ha in total. For afforestation, planting stock from five provenances was used and planted at 1 m × 1 m spacing to stimulate the height growth and reduce broad crowns formed by self-pruning. In the pure teak stands, 144 permanent sample plots of 0.01 ha in size were established in 2011. From 2011 until 2015, the tree height and stem girth of all individuals in the studied sample plots were measured, and mortality based on the stand density was assessed. Significant differences between the provenances were observed. The highest growth was noted in the Local provenance originated from the studied area, whereas the Semilla provenance from Costa Rica, characterised by the lowest growth ability, was characterized by lower radial increment and mean tree height with high mortality. Keywords: agroforestry system, farmland, radial increment, stand density, stem girth, tree height Journal: Journal of Forest Science Pages: 1-10 Volume: 69 Issue: 1 Year: 2023 DOI: 10.17221/115/2022-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/115/2022-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202301-0001.txt Handle: RePEc:caa:jnljfs:v:69:y:2023:i:1:id:115-2022-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Bui Manh Hung Author-Workplace-Name: Department of Forest Inventory and Planning, Faculty of Forestry, Vietnam National University of Forestry, Xuan Mai, Chuong My, Hanoi, Vietnam Author-Name: Nguyen Thi Bich Phuong Author-Workplace-Name: Department of Soil Science, Faculty of Forestry, Vietnam National University of Forestry, Xuan Mai, Chuong My, Hanoi, Vietnam Author-Name: Nguyen Van Quy Author-Workplace-Name: Faculty of Natural Resources Management, Vietnam National University of Forestry - Second Campus, Dong Nai, Vietnam Author-Name: Nguyen Van Hop Author-Workplace-Name: Faculty of Natural Resources Management, Vietnam National University of Forestry - Second Campus, Dong Nai, Vietnam Author-Name: Le Van Cuong Author-Workplace-Name: Faculty of Forestry, Vietnam National University of Forestry - Second Campus, Dong Nai, Vietnam Author-Name: Yusif Habib Author-Workplace-Name: Department of Agriculture and Environment Operational Research, AgroEco Farm Solutions Ltd., Accra, Ghana Title: Acacia canopy structure and carbon stock in Ba Vi, Vietnam Abstract: Forest structure is a key component of its management and assessment in every forest ecosystem. In the study, 23 plots were established to obtain data on the acacia forest community based on tree size. Results from the study indicated that the acacia community could be broadly divided into two groups based on tree-size variables. The diameter and height frequency distributions of Group 1 were right-skewed, while those of Group 2 were more complicated. In both groups, there were positive correlations between tree-size variables, nonetheless the relationship between diameter at breast height and total height was best described using the cubic equation. Further, the Weibull and Sinh-Arcsinh (SHASH) best simulated the diameter and height frequency distribution. High-quality trees were found in a large diameter (> 30 cm) and height groups (> 22 m). In contrast, low-quality plants often concentrated on the smallest sizes. Therefore, trees with a diameter of 2-10 cm and a height lower than 8 m should receive attention to tend. Carbon stock in the two groups was 61.48 Mg.ha-1 and 64.21 Mg.ha-1, respectively. Tending solutions and measurements should be carried out regularly to promptly propose silvicultural measures and improve forest quality in future. Keywords: Acacia mangium, distribution modelling, regression, tree quality Journal: Journal of Forest Science Pages: 21-32 Volume: 69 Issue: 1 Year: 2023 DOI: 10.17221/46/2022-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/46/2022-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202301-0002.txt Handle: RePEc:caa:jnljfs:v:69:y:2023:i:1:id:46-2022-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Rabah Zennir Author-Workplace-Name: Planning, Urban and Environmental Analysis Laboratory, Land Planning Department, Faculty of Earth Sciences, Badji Mokhtar-Annaba University, Annaba, Algeria Author-Name: Boubaker Khallef Author-Workplace-Name: Department of Earth Sciences, Institute of Architecture and Earth Sciences, University Abbas Ferhat, Sétif, Algeria Title: Forest fire area detection using Sentinel-2 data: Case of the Beni Salah national forest ‒ Algeria Abstract: Forest cover plays an important role in terms of biodiversity and the environment. The Beni Salah national forest in its part which is located in the Guelma province in the extreme northeast of Algeria is an illustrative example where forest fires represent the chronic phenomenon which weighs heavily on this forest. The present study comes after a forest fire that occurred in 2021, when 3 000 ha of this forest were ravaged by forest fires according to the conservation of forests of Guelma. The main objective of this research is to map the severity of burns and estimate the severely burned area using Sentinel-2 satellite images based on remote sensing indices such as Normalized Difference Vegetation Index (NDVI), Differenced Normalized Difference Vegetation Index (dNDVI), Normalized Burn Ratio (NBR), Differenced Normalized Burn Ratio (dNBR), Green Normalized Difference Vegetation Index (GNDVI), Differenced Green Normalized Difference Vegetation Index (dGNDVI), Burn Area Index (BAI) and Relativized Burn Ratio (RBR). The result obtained revealed that 28.23% of the study area represents a seriously burned area. The established burn severity map is a real decision-making tool, but it still has certain limitations. Keywords: burn severity, forest fires, remote sensing index, satellite image, state forest Journal: Journal of Forest Science Pages: 33-40 Volume: 69 Issue: 1 Year: 2023 DOI: 10.17221/50/2022-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/50/2022-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202301-0003.txt Handle: RePEc:caa:jnljfs:v:69:y:2023:i:1:id:50-2022-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Abdellah Ichen Author-Workplace-Name: Faculty of Sciences, Mohammed V University in Rabat, Rabat, Morocco Author-Name: Saâd Hanane Author-Workplace-Name: Center for Innovation, Research and Training, Water and Forests National Agency, Rabat, Morocco Author-Name: Mohammed Bouaamama Author-Workplace-Name: North-West Regional Directorate for Water and Forests, Water and Forests National Agency, Kenitra, Morocco Author-Name: Mohamed Alaoui Author-Workplace-Name: Faculty of Sciences, Mohammed V University in Rabat, Rabat, Morocco Author-Name: Najib Magri Author-Workplace-Name: Center for Innovation, Research and Training, Water and Forests National Agency, Rabat, Morocco Author-Name: Abdelaziz Benhoussa Author-Workplace-Name: Faculty of Sciences, Mohammed V University in Rabat, Rabat, Morocco Title: Selection of trees for rubbing by the wild boar (Sus scrofa) in the Sidi Boughaba forested Moroccan Ramsar site: Assessment, implications, and perspectives Abstract: Knowledge of mechanisms by which large mammals select rubbing trees (RT) is a major challenge for the effective management of forests and wildlife resources. In this study, we investigated this issue regarding the Wild boar (Sus scrofa) in the Moroccan forested site of Sidi Boughaba as a case study. We used data from four sets of variables, namely topography, forest type, landscape composition, and microhabitat, measured at 58 rub and control trees, to determine the factors associated with the occurrence of RT by means of generalized linear mixed models. Our results showed that the RT occurrence increased with a high density of red juniper trees and declined with distance to the nearest footpath. Variation partitioning analysis revealed that the pure fraction of microhabitat was the most robust in explaining this occurrence (adj. R2 = 0.17, P < 0.001), followed by that of forest type (adj. R2 = 0.05, P < 0.05). A scientific monitoring system must be set up to strike a balance between the availability of forest trees on the one hand and the pressure exerted by wild boars on this internationally importance site on the other. It is imperative to test the geographical generality of our results in other Mediterranean forests. Keywords: rub trees, rubbing behaviour, tree selectivity, Sus scrofa, Morocco Journal: Journal of Forest Science Pages: 11-20 Volume: 69 Issue: 1 Year: 2023 DOI: 10.17221/139/2022-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/139/2022-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202301-0004.txt Handle: RePEc:caa:jnljfs:v:69:y:2023:i:1:id:139-2022-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Editorial Department Title: List of reviewers 2022 Journal: Journal of Forest Science Pages: I-II Volume: 69 Issue: 1 Year: 2023 File-URL: http://jfs.agriculturejournals.cz/artkey/jfs-202301-0005_list-of-reviewers-2022.php File-Format: text/html Handle: RePEc:caa:jnljfs:v:69:y:2023:i:1:id:jfs-202301-0005