Viktória Erzsébet Hegedéné Nemes, Miklós Molnár, Á. Csiszár
This invasive plant management study focuses on the treatment of younger and older seedproducing black cherry (Prunus serotina Ehrh.) individuals. We injected the older trees and applied bark treatment to the thinner saplings in 2018. Over two vegetation periods, we studied the effect of 11 herbicides and ranked the treatments based on their introduced foliage loss and sprouting. In the trunk injection experiment, the most effective treatment was a combination of glyphosate and clopyralid (Medallon Premium-Lontrel 300). Compositions without glyphosate did not meet expectations. In the bark treatment experiment, the herbicides used were combinations of glyphosate and MCPA (Medallon Premium Mecomorn-750 SL), glyphosate and dicamba (Medallon Premium-Banvel 480 S), and glyphosate and clopyralid (Medallon Premium-Lontrel 300). Results indicate that all three treatments are effective. Some of the technologies and chemical combinations this study presents are recommendable considering current plant protection legislation.
{"title":"Impact Assessment of Trunk Injection and Bark Treatment in Black Cherry (Prunus serotina Ehrh.) Control","authors":"Viktória Erzsébet Hegedéné Nemes, Miklós Molnár, Á. Csiszár","doi":"10.37045/aslh-2022-0003","DOIUrl":"https://doi.org/10.37045/aslh-2022-0003","url":null,"abstract":"This invasive plant management study focuses on the treatment of younger and older seedproducing black cherry (Prunus serotina Ehrh.) individuals. We injected the older trees and applied bark treatment to the thinner saplings in 2018. Over two vegetation periods, we studied the effect of 11 herbicides and ranked the treatments based on their introduced foliage loss and sprouting. In the trunk injection experiment, the most effective treatment was a combination of glyphosate and clopyralid (Medallon Premium-Lontrel 300). Compositions without glyphosate did not meet expectations. In the bark treatment experiment, the herbicides used were combinations of glyphosate and MCPA (Medallon Premium Mecomorn-750 SL), glyphosate and dicamba (Medallon Premium-Banvel 480 S), and glyphosate and clopyralid (Medallon Premium-Lontrel 300). Results indicate that all three treatments are effective. Some of the technologies and chemical combinations this study presents are recommendable considering current plant protection legislation.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82554878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study summarises the test results of Pannónia poplar (Populus × euramericana cv. Pannónia) originating from three plantation sites in Győr-Moson-Sopron County in the Western Transdanubia region of Hungary: Újrónafő 11G, Győr 540B, and Kapuvár 35A. The research primarily aimed to clarify the characteristics of radial growth depending on the plantation site and to predict the selected physical and mechanical properties of the xylem. Measuring the time-of-flight (TOF) in trees was performed with a non-destructive test technique using a “Fakopp” TreeSonic device. The stress wave velocity (SWV) values calculated from TOF data are significant in estimating the dynamic modulus of elasticity (MOE) of the xylem and, therefore, in the prediction of timber suitability for structural applications. During the on-site measurements, 50 trees – as random samples from every site – were investigated to determine the diameter at breast height (DBH) and the stress wave velocity in sapwood parallel to the grain. In addition to the non-destructive measurements, the laboratory analysis of the xylem from harvested logs (three logs per site, random sample) was also performed to determine the radial growth rate and density. The one-way ANOVA results revealed significant differences in SWV values between certain plantation groups. The difference between the average values of young and old plantations is 136.8 m/s, which is a significant difference. Similar findings occurred for the middle-aged and old plantation trees. The average values of the young and the middle-aged trees can be considered the same at the 0.05 level of significance. We also established that the trees in the young (22 years old) plantation site, Újrónafő 11G, planted with the closest spacing (3 m × 4 m), had the lowest average diameter of breast height naturally and showed the highest average value of SWV. Nevertheless, the sap- and heartwood samples from this plantation site had the highest average density values in a normal climate; therefore, the highest dynamic modulus of elasticity of the xylem can be expected in logs originating from this plantation site.
{"title":"Measurements of the Load-bearing Structural Aspects of Pannónia Poplar from Sites in Western Transdanubia, Hungary","authors":"N. Horváth, C. Csiha","doi":"10.37045/aslh-2022-0008","DOIUrl":"https://doi.org/10.37045/aslh-2022-0008","url":null,"abstract":"This study summarises the test results of Pannónia poplar (Populus × euramericana cv. Pannónia) originating from three plantation sites in Győr-Moson-Sopron County in the Western Transdanubia region of Hungary: Újrónafő 11G, Győr 540B, and Kapuvár 35A. The research primarily aimed to clarify the characteristics of radial growth depending on the plantation site and to predict the selected physical and mechanical properties of the xylem. Measuring the time-of-flight (TOF) in trees was performed with a non-destructive test technique using a “Fakopp” TreeSonic device. The stress wave velocity (SWV) values calculated from TOF data are significant in estimating the dynamic modulus of elasticity (MOE) of the xylem and, therefore, in the prediction of timber suitability for structural applications. During the on-site measurements, 50 trees – as random samples from every site – were investigated to determine the diameter at breast height (DBH) and the stress wave velocity in sapwood parallel to the grain. In addition to the non-destructive measurements, the laboratory analysis of the xylem from harvested logs (three logs per site, random sample) was also performed to determine the radial growth rate and density. The one-way ANOVA results revealed significant differences in SWV values between certain plantation groups. The difference between the average values of young and old plantations is 136.8 m/s, which is a significant difference. Similar findings occurred for the middle-aged and old plantation trees. The average values of the young and the middle-aged trees can be considered the same at the 0.05 level of significance. We also established that the trees in the young (22 years old) plantation site, Újrónafő 11G, planted with the closest spacing (3 m × 4 m), had the lowest average diameter of breast height naturally and showed the highest average value of SWV. Nevertheless, the sap- and heartwood samples from this plantation site had the highest average density values in a normal climate; therefore, the highest dynamic modulus of elasticity of the xylem can be expected in logs originating from this plantation site.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"6 8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80565709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fath Alrhman Awad Ahmed Yournis, A. Y. Abdelgadir, Z. Ahmed, J. Govina, R. Németh
This paper studied the basic density and mechanical properties differences of wood among and within Sclerocarya birrea and Anogeissus leiocarpus. Three trees from each species were selected from the Lagawa Natural Forest Reserve in Western Kordofan State, Sudan. Test specimens were selected from three vertical positions (10, 50, and 90% along the bole length) of the trees. Specimens were also collected from three horizontal positions (innerwood, middlewood, and outerwood) within each of the three vertical positions. Tests for basic density of wood (BD), modulus of rupture (MOR), modulus of elasticity (MOE), compressive (CS), and shear strength (SS) parallel to the grain were performed. An analysis of variance shows that only the horizontal positions were a significant source of variation for both species studied. The correlation coefficient of BD was significant, weak, and positive for the mechanical properties of A. leiocarpus. A similar observation was found for BD correlated with CS and SS for S. birrea.
{"title":"Inter- and Intraspecific Differences in Physical and Mechanical Properties of Wood from Sclerocarya birrea and Anogeissus leiocarpus","authors":"Fath Alrhman Awad Ahmed Yournis, A. Y. Abdelgadir, Z. Ahmed, J. Govina, R. Németh","doi":"10.37045/aslh-2022-0004","DOIUrl":"https://doi.org/10.37045/aslh-2022-0004","url":null,"abstract":"This paper studied the basic density and mechanical properties differences of wood among and within Sclerocarya birrea and Anogeissus leiocarpus. Three trees from each species were selected from the Lagawa Natural Forest Reserve in Western Kordofan State, Sudan. Test specimens were selected from three vertical positions (10, 50, and 90% along the bole length) of the trees. Specimens were also collected from three horizontal positions (innerwood, middlewood, and outerwood) within each of the three vertical positions. Tests for basic density of wood (BD), modulus of rupture (MOR), modulus of elasticity (MOE), compressive (CS), and shear strength (SS) parallel to the grain were performed. An analysis of variance shows that only the horizontal positions were a significant source of variation for both species studied. The correlation coefficient of BD was significant, weak, and positive for the mechanical properties of A. leiocarpus. A similar observation was found for BD correlated with CS and SS for S. birrea.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"350 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85524202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Our research focused on the causes responsible for the fine mosaic pattern of plant associations on wet and wet-mesic meadows. The study area is located in the Little Hungarian Plain, including the former swamp basins of Hanság and Tóköz in Hungary. The vegetation survey data were evaluated by statistical methods (TWINSPAN method), and vegetation maps of the areas were prepared. Topsoil samples near the relevés were gathered for further laboratory tests. Soil profiles were opened by a Pürckhauer soil sampler for on-site description of the soil horizons and classification. Surface models provided a base for the preparation of contour maps that could be compared with the vegetation pattern. We found that of the two dominant vegetation types, mesotrophic wet meadows were associated with Mollic Gleysols, while non-tussock sedge beds were associated with Histic Gleysols. At the transitions of the two soil classes, the subgroup of non-tussock sedge beds is the dominant type. The soil class only determined the plant association on a habitat level, but it could not reason the fine pattern of the plant communities on the same soil class. Canonical correspondence analysis (CCA) was performed to investigate the relationship between the distribution of dominant species and soil parameters. Several soil parameters combined have a significant effect on the distribution of dominant species. In conclusion, we found that the formation of association types strongly depends on the soil characteristics of the area, and that it is closely related to it. However, in the formation of the fine mosaic pattern, the driving ecological factors are the microrelief and the length of the saturated or flooded soil conditions.
{"title":"Correspondence Between Vegetation Patterns and Soils in Wet and Wet-mesic Grasslands of Hanság and Tóköz (Hungary)","authors":"Gy. Haszonits, Dávid Heilig","doi":"10.37045/aslh-2021-0006","DOIUrl":"https://doi.org/10.37045/aslh-2021-0006","url":null,"abstract":"Our research focused on the causes responsible for the fine mosaic pattern of plant associations on wet and wet-mesic meadows. The study area is located in the Little Hungarian Plain, including the former swamp basins of Hanság and Tóköz in Hungary. The vegetation survey data were evaluated by statistical methods (TWINSPAN method), and vegetation maps of the areas were prepared. Topsoil samples near the relevés were gathered for further laboratory tests. Soil profiles were opened by a Pürckhauer soil sampler for on-site description of the soil horizons and classification. Surface models provided a base for the preparation of contour maps that could be compared with the vegetation pattern. We found that of the two dominant vegetation types, mesotrophic wet meadows were associated with Mollic Gleysols, while non-tussock sedge beds were associated with Histic Gleysols. At the transitions of the two soil classes, the subgroup of non-tussock sedge beds is the dominant type. The soil class only determined the plant association on a habitat level, but it could not reason the fine pattern of the plant communities on the same soil class. Canonical correspondence analysis (CCA) was performed to investigate the relationship between the distribution of dominant species and soil parameters. Several soil parameters combined have a significant effect on the distribution of dominant species. In conclusion, we found that the formation of association types strongly depends on the soil characteristics of the area, and that it is closely related to it. However, in the formation of the fine mosaic pattern, the driving ecological factors are the microrelief and the length of the saturated or flooded soil conditions.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"128 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74117484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Z. Keserű, A. Borovics, T. Ábri, K. Rédei, I. Lee, Hye-Hyon Lim
In the late 1990s, Hungarian Forest Research Institute researchers produced 15 micropropogated black locust (Robinia pseudoacacia L.) clones as part of a program to select clones that could be successfully grown on arid sites. Five of these clones (R.p. ‘Vacsi’, R.p. ‘Szálas’, R.p. ‘Oszlopos’, R.p. ‘Homoki’ and R.p. ‘Bácska’) have been categorized as cultivar candidates. The current study presents information concerning the ‘Bácska’, ‘Vacsi’ and ‘Homoki’ candidate cultivars. Based on research results obtained thus far, the three aforementioned candidate cultivars seem the most promising. The cultivars, aged 6-15 years, were tested in a variety comparison trial under arid, sandy soil conditions in the Danube–Tisza Interfluve near the town of Helvécia. Significant differences (p<0.05) were observed during results evaluation of full inventories and during the comparison of candidate cultivars partly with common black locust and partly with ‘Jászkiséri’ cultivars. The 15-yearold ‘Homoki’ outperformed common black locust in diameter and mean tree volume; ‘Vacsi’ outperformed in stem quality. The 14-year-old ‘Bácska’ candidate cultivar was compared with the ‘Jászkiséri’ cultivar and the ‘Oszlopos’ cultivar candidate. ‘Bácska’ proved to be significantly better in diameter and mean tree volume than Jászkiséri’, but weaker in trunk quality. The South Korean National Institute of Forest Science has supported this research for several years. The growing technology of the mentioned candidate cultivars are also examined in Korea, taking local ecological conditions into account.
{"title":"Growing of Black Locust (Robinia pseudoacacia L.) Candidate Cultivars on Arid Sandy Site","authors":"Z. Keserű, A. Borovics, T. Ábri, K. Rédei, I. Lee, Hye-Hyon Lim","doi":"10.37045/aslh-2021-0004","DOIUrl":"https://doi.org/10.37045/aslh-2021-0004","url":null,"abstract":"In the late 1990s, Hungarian Forest Research Institute researchers produced 15 micropropogated black locust (Robinia pseudoacacia L.) clones as part of a program to select clones that could be successfully grown on arid sites. Five of these clones (R.p. ‘Vacsi’, R.p. ‘Szálas’, R.p. ‘Oszlopos’, R.p. ‘Homoki’ and R.p. ‘Bácska’) have been categorized as cultivar candidates. The current study presents information concerning the ‘Bácska’, ‘Vacsi’ and ‘Homoki’ candidate cultivars. Based on research results obtained thus far, the three aforementioned candidate cultivars seem the most promising. The cultivars, aged 6-15 years, were tested in a variety comparison trial under arid, sandy soil conditions in the Danube–Tisza Interfluve near the town of Helvécia. Significant differences (p<0.05) were observed during results evaluation of full inventories and during the comparison of candidate cultivars partly with common black locust and partly with ‘Jászkiséri’ cultivars. The 15-yearold ‘Homoki’ outperformed common black locust in diameter and mean tree volume; ‘Vacsi’ outperformed in stem quality. The 14-year-old ‘Bácska’ candidate cultivar was compared with the ‘Jászkiséri’ cultivar and the ‘Oszlopos’ cultivar candidate. ‘Bácska’ proved to be significantly better in diameter and mean tree volume than Jászkiséri’, but weaker in trunk quality. The South Korean National Institute of Forest Science has supported this research for several years. The growing technology of the mentioned candidate cultivars are also examined in Korea, taking local ecological conditions into account.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88634362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Planting shelterbelts on agricultural fields has long traditions in Hungary. The biodiversityenhancing effect of this type of agroforestry is intensively researched, but most of the results concentrate on tree species diversity and specific animal communities such as insects and birds. The characteristics of herbaceous vegetation and soil mesofauna related to shelterbelts are understudied; however, both communities play key roles in agricultural productivity. This study aimed to explore the diversity and species composition of these groups in shelterbelts and adjacent grassy and cropped habitats. Samples were taken inside and adjacent to a native and a non-native shelterbelt in an agricultural landscape. The results highlight that shelterbelt edges are at least as important as tree stands in preserving soil-related diversity. Native tree species composition shows slightly more favorable conditions concerning the examined communities. While the positive impact of shelterbelts on the agricultural productivity and the diversity of several animal communities has been proven, the appearance of forest-related herbaceous species in tree stands planted on cultivated fields is not expected, even after decades have passed. The research was supported by the Blue Planet Climate Protection Foundation.
{"title":"The Role of Grassy Habitats in Agroforestry","authors":"N. Szigeti, I. Berki, A. Vityi, D. Winkler","doi":"10.37045/aslh-2021-0005","DOIUrl":"https://doi.org/10.37045/aslh-2021-0005","url":null,"abstract":"Planting shelterbelts on agricultural fields has long traditions in Hungary. The biodiversityenhancing effect of this type of agroforestry is intensively researched, but most of the results concentrate on tree species diversity and specific animal communities such as insects and birds. The characteristics of herbaceous vegetation and soil mesofauna related to shelterbelts are understudied; however, both communities play key roles in agricultural productivity. This study aimed to explore the diversity and species composition of these groups in shelterbelts and adjacent grassy and cropped habitats. Samples were taken inside and adjacent to a native and a non-native shelterbelt in an agricultural landscape. The results highlight that shelterbelt edges are at least as important as tree stands in preserving soil-related diversity. Native tree species composition shows slightly more favorable conditions concerning the examined communities. While the positive impact of shelterbelts on the agricultural productivity and the diversity of several animal communities has been proven, the appearance of forest-related herbaceous species in tree stands planted on cultivated fields is not expected, even after decades have passed. The research was supported by the Blue Planet Climate Protection Foundation.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89435723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Orsolya Szecsődi, A. Makó, Viktória Labancz, G. Barna, B. Gálos, A. Bidló, A. Horváth
PSD (particle size distribution) is a key factor affecting soil hydro-physical properties (e.g. hydraulic conductivity and water retention), which makes its determination essential. Climate change increases the importance of water retention and permeability as extreme weather events can severely impair the water supply of drought-sensitive vegetation. The amount of water in soils is expected to decrease. The modified Thornthwaite model considers soil properties such as root depth, topsoil layer thickness and particle size distribution (silt and clay fraction) of soil particles combined with the most significant soil properties. At the beginning of the research, we developed a laser diffraction method to replace the standard based “pipette” sedimentation method. The theoretical background of laser diffraction measurements is already known, but their practical application for estimating soil water retention capacity is still poorly understood. The pre-sieving of soil aggregates, the pre-treatment (disaggregation and dispersion) of the samples greatly influence the obtained results. In addition to the sedimentation method, laser diffraction measurements (Malvern Mastersizer 3000) were applied with three variants of pre-treatment. For comparison, the results of a Leptosol, a Cambisol, and a Luvisol were prepared for the first modified Thornthwaite water balance model. Significant differences appeared, especially during drought periods, which could be a basis for studying soil drought sensitivity. The development of our method can estimate the water retention capacity of soil, which could support adaptive forest management plans against climatic and pedological transformations.
{"title":"Using Different Approaches of Particle Size Analysis for Estimation of Water Retention Capacity of Soils: Example of Keszthely Mountains (Hungary)","authors":"Orsolya Szecsődi, A. Makó, Viktória Labancz, G. Barna, B. Gálos, A. Bidló, A. Horváth","doi":"10.37045/aslh-2021-0003","DOIUrl":"https://doi.org/10.37045/aslh-2021-0003","url":null,"abstract":"PSD (particle size distribution) is a key factor affecting soil hydro-physical properties (e.g. hydraulic conductivity and water retention), which makes its determination essential. Climate change increases the importance of water retention and permeability as extreme weather events can severely impair the water supply of drought-sensitive vegetation. The amount of water in soils is expected to decrease. The modified Thornthwaite model considers soil properties such as root depth, topsoil layer thickness and particle size distribution (silt and clay fraction) of soil particles combined with the most significant soil properties. At the beginning of the research, we developed a laser diffraction method to replace the standard based “pipette” sedimentation method. The theoretical background of laser diffraction measurements is already known, but their practical application for estimating soil water retention capacity is still poorly understood. The pre-sieving of soil aggregates, the pre-treatment (disaggregation and dispersion) of the samples greatly influence the obtained results. In addition to the sedimentation method, laser diffraction measurements (Malvern Mastersizer 3000) were applied with three variants of pre-treatment. For comparison, the results of a Leptosol, a Cambisol, and a Luvisol were prepared for the first modified Thornthwaite water balance model. Significant differences appeared, especially during drought periods, which could be a basis for studying soil drought sensitivity. The development of our method can estimate the water retention capacity of soil, which could support adaptive forest management plans against climatic and pedological transformations.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82232495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This research aimed to investigate the changes in forest cover, utilizing Sentinel-2A imagery data. Annual results of deforestation, non-forest, and forest area in the Municipality of Zubin Potok (Kosovo) between 2016 and 2017 were presented and analyzed by applying the image difference change detection method on a Normalized Difference Vegetation Index (NDVI) product derived for both years. The study reveals that forest coverage in this municipality has changed due to human activity (harvested and burnt forests). The footprint of changes was evidenced by using Sentinel 2A band combinations and very high resolution (VHR) images available in Google Earth (GE). From the overall forest-covered area of 24,873.61 hectares, the detected changes during the annual period are as follows: 24,423.57 ha or 98.19 % is mapped as forest, 113.75 hectares or 0.46 % as non-forest, and 336.77 or 1.35 % of the area forest is mapped as deforestation. These results can be used to identify human-made deforestation and to develop monitoring forest plans for the coming years.
{"title":"Mapping Forest Cover Changes using Sentinel-2A Imagery in the Municipality of Zubin Potok, Republic of Kosovo","authors":"F. Krasniqi, G. Király","doi":"10.37045/aslh-2021-0007","DOIUrl":"https://doi.org/10.37045/aslh-2021-0007","url":null,"abstract":"This research aimed to investigate the changes in forest cover, utilizing Sentinel-2A imagery data. Annual results of deforestation, non-forest, and forest area in the Municipality of Zubin Potok (Kosovo) between 2016 and 2017 were presented and analyzed by applying the image difference change detection method on a Normalized Difference Vegetation Index (NDVI) product derived for both years. The study reveals that forest coverage in this municipality has changed due to human activity (harvested and burnt forests). The footprint of changes was evidenced by using Sentinel 2A band combinations and very high resolution (VHR) images available in Google Earth (GE). From the overall forest-covered area of 24,873.61 hectares, the detected changes during the annual period are as follows: 24,423.57 ha or 98.19 % is mapped as forest, 113.75 hectares or 0.46 % as non-forest, and 336.77 or 1.35 % of the area forest is mapped as deforestation. These results can be used to identify human-made deforestation and to develop monitoring forest plans for the coming years.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79459796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. R. Antal, L. Dénes, Zsigmond András Vas, A. Polgár
Edgebanding affects both the visual appearance and edge protection of wood-based panels. In order for edgebanding to provide the desired protection, it must adhere strongly to the entire surface of the panel edges and maintain this adhesion throughout the life of the product. The present research compares conventional and so-called zero-joint edgebandings in terms of water and steam resistance, and examines the environmental impacts of edgebanding technologies using Life Cycle Assessment (LCA). In-line with our hypothesis, our test results showed that corners are the critical points of edgebanded furniture fronts, especially when exposed to moisture. Due to high variations in measurements, there is no significant difference between the two edgebanding methods at the beginning. However, differences become more significant after longer treatment times. These differences amount to two quality categories after 6 hours and three quality categories after 12 and 24 hours. The edgebanded fronts exposed to water for less than 30 minutes experience no significant deteriorations with any of the edgebanding methods. In the case of steam resistance, zero-joint edgebanding provides better protection, especially after the second and third treatment cycle. We can state that the surplus costs of zero-joint technology are 1.45 times greater than costs associated with conventional technology. Both show the considerable costs of edging materials, chipboard, and electrical energy. The applied environmental life cycle assessment (LCA) method corresponds to the requirements of ISO 14040:2006 and ISO 14044:2006 standards. We built up the environmental inventory and the life cycle model of the manufacturing technology using the GaBi Professional LCA software. In the impact assessment, we analysed the specific environmental impact categories of the differing production processes by technology according to the operation order of the manufacturing technology. In relation to traditional and the zero-joint edging technologies, according to all impact assessment methods, the life-cycle contribution rate was uniformly 47% traditional – 53% zero-joint by impact category. The higher indicator values of the zero-joint method are due to larger edge material consumption and higher energy demand. Zero-joint technology appears to avoid the application of conventional hot melt adhesives, but replacing these adhesives does not necessarily result in better environmental indicators. Nevertheless, zero-joint egdebanding does not just improve aesthetic appearance but also exceeds the durability provided by conventional edgebanding technology.
镶边既影响人造板的视觉外观，也影响其边缘保护。为了提供所需的保护，它必须牢固地附着在面板边缘的整个表面，并在产品的整个使用寿命中保持这种附着力。本研究在水和蒸汽阻力方面比较了传统和所谓的零关节边缘带，并使用生命周期评估(LCA)检查了边缘带技术对环境的影响。与我们的假设一致，我们的测试结果表明，棱角是镶边家具正面的关键点，特别是在暴露于潮湿时。由于测量值变化很大，两种边缘带方法在开始时没有显著差异。然而，治疗时间越长，差异就越明显。这些差异在6小时后形成两个质量类别，在12和24小时后形成三个质量类别。边带锋面暴露在水中不到30分钟的经验与任何边带方法没有明显的恶化。在抗蒸汽的情况下，零接缝封边提供更好的保护，特别是在第二和第三个处理周期之后。我们可以说，零关节技术的剩余成本是传统技术相关成本的1.45倍。两者都显示出相当大的镶边材料、刨花板和电能的成本。应用环境生命周期评价(LCA)方法符合ISO 14040:2006和ISO 14044:2006标准的要求。我们利用GaBi Professional LCA软件建立了制造技术的环境清单和生命周期模型。在影响评价中，根据制造工艺的运行顺序，分析了不同工艺对环境的具体影响类别。对于传统和零关节边缘技术，根据各种影响评估方法，按影响类别划分，全生命周期贡献率统一为传统47% -零关节53%。零接头法的指标值越高，说明边材消耗越大，能耗越高。零接头技术似乎避免了传统热熔胶的应用，但取代这些粘合剂并不一定会带来更好的环境指标。然而，零关节边带不仅改善了美观，而且超过了传统边带技术提供的耐用性。
{"title":"Comparative Study of Conventional and Zero-joint Edgebanding","authors":"M. R. Antal, L. Dénes, Zsigmond András Vas, A. Polgár","doi":"10.37045/aslh-2021-0002","DOIUrl":"https://doi.org/10.37045/aslh-2021-0002","url":null,"abstract":"Edgebanding affects both the visual appearance and edge protection of wood-based panels. In order for edgebanding to provide the desired protection, it must adhere strongly to the entire surface of the panel edges and maintain this adhesion throughout the life of the product. The present research compares conventional and so-called zero-joint edgebandings in terms of water and steam resistance, and examines the environmental impacts of edgebanding technologies using Life Cycle Assessment (LCA). In-line with our hypothesis, our test results showed that corners are the critical points of edgebanded furniture fronts, especially when exposed to moisture. Due to high variations in measurements, there is no significant difference between the two edgebanding methods at the beginning. However, differences become more significant after longer treatment times. These differences amount to two quality categories after 6 hours and three quality categories after 12 and 24 hours. The edgebanded fronts exposed to water for less than 30 minutes experience no significant deteriorations with any of the edgebanding methods. In the case of steam resistance, zero-joint edgebanding provides better protection, especially after the second and third treatment cycle. We can state that the surplus costs of zero-joint technology are 1.45 times greater than costs associated with conventional technology. Both show the considerable costs of edging materials, chipboard, and electrical energy. The applied environmental life cycle assessment (LCA) method corresponds to the requirements of ISO 14040:2006 and ISO 14044:2006 standards. We built up the environmental inventory and the life cycle model of the manufacturing technology using the GaBi Professional LCA software. In the impact assessment, we analysed the specific environmental impact categories of the differing production processes by technology according to the operation order of the manufacturing technology. In relation to traditional and the zero-joint edging technologies, according to all impact assessment methods, the life-cycle contribution rate was uniformly 47% traditional – 53% zero-joint by impact category. The higher indicator values of the zero-joint method are due to larger edge material consumption and higher energy demand. Zero-joint technology appears to avoid the application of conventional hot melt adhesives, but replacing these adhesives does not necessarily result in better environmental indicators. Nevertheless, zero-joint egdebanding does not just improve aesthetic appearance but also exceeds the durability provided by conventional edgebanding technology.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85772354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Govina, E. Ebanyenle, E. Appiah-Kubi, F. Owusu, J. Korang, H. Seidu, R. Németh, Roland Walker Mensah, Ruth Amuzu
This study sought to determine selected anatomical properties of young Eucalyptus hybrid species (E. grandis x E. urophylla) grown in Ghana. Images of fibres from macerated wood, and micro–sections produced with microtome were analysed using a compound digital microscope associated with Motic Image Plus Software (MIPS), version 2.0, installed on a computer. Images were initially processed using ImageJ software. Study data were analysed using an R statistical package. The overall mean value for fibre length was 907.67 µm, whereas double fibre wall thickness was 7.76 µm. Both variables had higher mean values in sapwood than in heartwood. Nevertheless, the found values decreased from the butt to the top portion. Statistically, axial and radial positions had no influence on fibre characteristics. In a 1 mm2 of the cross-section, the proportion of fibres was 38%, vessels were 19%, axial parenchyma were 22%, and radial parenchyma were 21% on average. Again, the radial and axial positions had no statistical influence on tissue proportion traits for the young eucalyptus wood. Mean value for vessel area was 9462.04 µm2 , whereas vessel frequency per mm2 was about 14. Vessels were significantly larger in area (range 9982.50 – 13544.41 µm2 ), yet reduced in frequency (range 6 – 17 per mm2 ) for sapwood. In heartwood, vessel area was comparatively smaller (range 6321.15 – 7816.69 µm2 ), whereas their frequency was high (range 15 – 18 vessels per mm2 ). Axial and radial position had statistical influence on vessel frequency and area for the young Eucalyptus grown in a plantation in Ghana.
{"title":"Tissue Proportion, Fibre, and Vessel Characteristics of Young Eucalyptus Hybrid Grown as Exotic Hardwood for Wood Utilization","authors":"J. Govina, E. Ebanyenle, E. Appiah-Kubi, F. Owusu, J. Korang, H. Seidu, R. Németh, Roland Walker Mensah, Ruth Amuzu","doi":"10.37045/aslh-2021-0008","DOIUrl":"https://doi.org/10.37045/aslh-2021-0008","url":null,"abstract":"This study sought to determine selected anatomical properties of young Eucalyptus hybrid species (E. grandis x E. urophylla) grown in Ghana. Images of fibres from macerated wood, and micro–sections produced with microtome were analysed using a compound digital microscope associated with Motic Image Plus Software (MIPS), version 2.0, installed on a computer. Images were initially processed using ImageJ software. Study data were analysed using an R statistical package. The overall mean value for fibre length was 907.67 µm, whereas double fibre wall thickness was 7.76 µm. Both variables had higher mean values in sapwood than in heartwood. Nevertheless, the found values decreased from the butt to the top portion. Statistically, axial and radial positions had no influence on fibre characteristics. In a 1 mm2 of the cross-section, the proportion of fibres was 38%, vessels were 19%, axial parenchyma were 22%, and radial parenchyma were 21% on average. Again, the radial and axial positions had no statistical influence on tissue proportion traits for the young eucalyptus wood. Mean value for vessel area was 9462.04 µm2 , whereas vessel frequency per mm2 was about 14. Vessels were significantly larger in area (range 9982.50 – 13544.41 µm2 ), yet reduced in frequency (range 6 – 17 per mm2 ) for sapwood. In heartwood, vessel area was comparatively smaller (range 6321.15 – 7816.69 µm2 ), whereas their frequency was high (range 15 – 18 vessels per mm2 ). Axial and radial position had statistical influence on vessel frequency and area for the young Eucalyptus grown in a plantation in Ghana.","PeriodicalId":53620,"journal":{"name":"Acta Silvatica et Lignaria Hungarica","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74668922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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