Template-Type: ReDIF-Article 1.0 Author-Name: Sucharita Panda Author-Workplace-Name: Department of Silviculture and Agroforestry, Dr YSP University of Horticulture and Forestry, Solan, India Author-Name: D.R. Bhardwaj Author-Workplace-Name: Department of Silviculture and Agroforestry, Dr YSP University of Horticulture and Forestry, Solan, India Author-Name: C.L. Thakur Author-Workplace-Name: Department of Silviculture and Agroforestry, Dr YSP University of Horticulture and Forestry, Solan, India Author-Name: Prashant Sharma Author-Name: Dhirender Kumar Author-Workplace-Name: Department of Silviculture and Agroforestry, Dr YSP University of Horticulture and Forestry, Solan, India Title: Growth response of seven multipurpose tree species to climatic factors: A case study from northwestern Himalayas, India Abstract: Identification of the species for dendrochronological studies is of great relevance to understand various aspects of climate change. However, in the northwestern Himalayan region, dendroclimatological investigations are confined to conifer species, with broadleaved species being disregarded. Thus, the present study was conducted to assess the growth response of seven multipurpose tree species (MPTs), namely Bauhinia variegata, Celtis australis, Grewia optiva, Paulownia fortunei, Toona ciliata, Ulmus villosa and Melia composita to local climate variables, viz. temperature as well as rainfall (seasonal, monthly, average) and CO2 level by evaluating the climatic signal in tree ring chronologies at Solan district, India (altitude 1 250 m) in the mid-hills of the northwestern Himalayas. The results indicated that only the maximum, rainy season temperature and CO2 level varied significantly (P < 0.05) between 1991 and 2017. Only G. optiva exhibited a significant (P < 0.05) tendency toward increased growth. C. australis has a remarkable negative correlation with temperature variables, viz. average, maximum, spring season, March temperature, whereas T. ciliata exhibits a positive correlation with temperature variables, such as rainy season, average and April temperature. Similarly, winter, total and December rainfall have a profound effect on P. fortunei, while March rainfall adversely affected the growth of B. variegata. On the other hand, G. optiva demonstrated sensitivity to both temperature (February and May) and rainfall variables (winter, February and May). U. villosa recorded a positive correlation with rainfall (autumn and October rainfall) but a negative correlation with temperature variables (maximum and April temperature). Elevated CO2 levels affected only two species (G. optiva, M. composita) out of the seven selected species. Our findings will contribute to a better understanding of the climate growth relationships of investigated tree species, as a result, to more accurate projections of the effects of climate change on these MPTs and directing future studies. Keywords: broadleaved tree species, CO2 level, dendrochronology, rainfall, temperature Journal: Journal of Forest Science Pages: 83-95 Volume: 68 Issue: 3 Year: 2022 DOI: 10.17221/159/2021-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/159/2021-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202203-0001.txt Handle: RePEc:caa:jnljfs:v:68:y:2022:i:3:id:159-2021-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Rukea Al-hasn Author-Name: Raed Almuhammad Author-Workplace-Name: General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria Title: Burned area determination using Sentinel-2 satellite images and the impact of fire on the availability of soil nutrients in Syria Abstract: The objective of this research is the identification of burned forest areas that occurred in Syria from September 2nd to October 15th, 2020. Forest fire risk classes were determined using Sentinel-2 images. Normalized Burn Ratio (NBR), Differenced Normalized Burn Ratio (dNBR), and Burned Area Index for Sentinel-2 (BAIS2), and Normalized Difference Vegetation Index (NDVI) were used for the identification how much the forests have been destroyed and to establish fire risk classes. According to the study results, the size of the vegetation area that was destroyed due to fire was determined, and the probability of the forest fire exposure of these areas was established. The fires also altered some chemical properties in the soil during the combustion process. Thus, this study was focused on the impact of fire on the availability of soil nutrients. Soil samples were collected from three depths (0-10 cm, 10-20 cm and 20-30 cm) under the forest land a month after the fire in three locations: Al-Fazeen, Sawda and Gard Al-rihan. Pine (Pinus brutia) trees cover these areas. The results of this study indicated that the fire increased pH, EC and sand, the fire also led to an increase in the solubility of the available major soil elements N, P and K. There was an increase in the solubility of the soil microelements Zn, Cu, Mn and Fe while the content of organic material and silt and clay ratio decreased at the three sites in comparison with unburned soil. Keywords: burned forest, NBR, dNBR, BAIS2, NDVI Journal: Journal of Forest Science Pages: 96-106 Volume: 68 Issue: 3 Year: 2022 DOI: 10.17221/122/2021-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/122/2021-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202203-0002.txt Handle: RePEc:caa:jnljfs:v:68:y:2022:i:3:id:122-2021-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Aleksandr Lebedev Author-Name: Valery Kuzmichev Author-Workplace-Name: Department of Agricultural Reclamation, Forestry and Land Management, Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, Moscow, Russia Title: Changes of tree stem biomass in European forests since 1950 Abstract: Based on the measurements of the biomass of the stems of 3 699 trees of Scots pine, Norway spruce, and silver birch in Europe since 1950, it has been shown that these tree species show a reduction in biomass and wood density. These results contradict the fact that the volume of wood is directly converted to biomass using the historical values of the conversion rates. From 1950 to 2020 the biomass of 1 m3 of the stem with bark decreased on average by 80 kg (-17%) for Scots pine, by 105 kg (-22%) for Norway spruce and by 92 kg (-15%) for silver birch. The results obtained should be taken into account when assessing the technical properties of wood and estimating carbon sequestration by forest biomass. Since decreasing trends in stem biomass have been identified for several tree species, the phenomenon may have a large degree of generality. Such studies should be continued both at the regional and national level and at the global level. Keywords: biomass model, climate change, individual tree, wood basic density Journal: Journal of Forest Science Pages: 107-115 Volume: 68 Issue: 3 Year: 2022 DOI: 10.17221/135/2021-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/135/2021-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202203-0003.txt Handle: RePEc:caa:jnljfs:v:68:y:2022:i:3:id:135-2021-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Virginia Morales Olmos Author-Workplace-Name: PDU Economics, Northeast Regional University Center (CENUR), University of the Republic, Tacuarembó, Uruguay Author-Name: Ernesto Pienika Author-Workplace-Name: Department of Economics, Faculty of Economics and Administration, University of the Republic, Tacuarembó, Uruguay Author-Workplace-Name: Economic Statistics Division, Central Bank of Uruguay, Montevideo, Uruguay Title: Contribution of the forest sector to the Uruguayan economy: A first approach with National Accounts Abstract: The forest sector development in Uruguay has been based on planted forest areas, mainly with eucalyptus and pine. The Parliament passed the Forestry Law in 1987 and since then the sector has been growing rapidly. The objective of the study is to analyse the contribution of the forest sector in the Uruguayan economy, its evolution between 1997 and 2018 and its distribution in recent years. The research used information from the new National Accounts released by the Central Bank of Uruguay, and, in this framework, the forest sector is studied for the main macroeconomic variables and production. The results show that in the period 1997-2018, while the Uruguayan economy grew 2.6% in constant terms, on average, the forest sector grew 7.6% on average, with peaks in 2007-2008 and 2013-2015. In 2016, the forest production was allocated to exports (46.76%), which surpassed intermediate use (43.05%) after initial operations of the second pulp mill in the country. Furthermore, forest exports represented 10.5% of the country's total exports of goods and services, showing an exporter profile. Keywords: value added, Uruguay, GDP, forest industry, economic impact Journal: Journal of Forest Science Pages: 116-119 Volume: 68 Issue: 3 Year: 2022 DOI: 10.17221/149/2021-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/149/2021-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202203-0004.txt Handle: RePEc:caa:jnljfs:v:68:y:2022:i:3:id:149-2021-JFS