Journal of Forest Science, 2021 (vol. 67), issue 12
Strength and dimensional stability of cement-bonded wood waste-sand bricksOriginal Paper
Emmanuel Adelusi, Olayiwola Ajala, Reuben Afolabi, Kayode Olaoye
J. For. Sci., 2021, 67(12):545-552 | DOI: 10.17221/98/2021-JFS 
Conservation of trees which belong to renewable natural resources in developing countries through judicious utilization in building industry has been seriously left unattended to over the years. The utilization of this unprocessed wealth materials which could serve as one of the alternative constituents in construction materials is now a global concern. Therefore, the needs to investigate the strength and water sorption property of wood waste as a partial replacing material in brick production for building construction arise. Sawdust, sand and cement were mixed together at three different mixing ratios of 1 : 1
Influences of determined and estimated dendrometric variables on the precision of volumetric modellingOriginal Paper
José Antônio Aleixo da Silva, Rinaldo Luiz Caraciolo Ferreira
J. For. Sci., 2021, 67(12):553-561 | DOI: 10.17221/105/2021-JFS
The use of independent variables in volumetric modelling is an important step in fitting models to represent tree or stand characteristics. The DBH measured at 1.3 m from the ground level and total tree height (Ht) are the most commonly used independent variables when modelling individual tree volumes. This work aimed to analyze the importance of independent variables in fitting and selecting volumetric equations. A total of 750 trees from an experiment with three Eucalyptus spp. clones planted in five spacings in the semi-arid region of Pernambuco were used. Four statistical procedures were applied to compare the equations: Adjusted...
Responses of soil-inhabiting mesostigmatid mites to deforestation and disturbance in oak (Quercus brontii) forests of southwestern IranOriginal Paper
Ali Bagheri-Kordeshami, Jahangir Khajehali, Farshid Nourbakhsh, Masoud M. Ardestani
J. For. Sci., 2021, 67(12):562-569 | DOI: 10.17221/54/2021-JFS
The impacts of deforestation on edaphic mesostigmatid mites were investigated in oak forests of Lordegan, southwestern Iran, from April to October. A total of twenty-one species belonging to eighteen genera and ten families were collected and identified. The Shannon-Wiener, Simpson, Jaccard's and Margalef biodiversity indices were used for data analyses. Among the collected species, Antennoseius bacatus with 29% and Sessilunchus hungaricus with 16% relative abundance were the most abundant and dominant species in human-disturbed and natural forests, respectively. The estimated values were higher in natural oak forest than in disturbed...
Impact of different factors degrading cork oak stands in the Mediterranean region: A case study from AlgeriaOriginal Paper
Salah Eddine Younsi, Yasmine Adjami, Rym Ghanem, Billel Bouchaib, Mohamed Laid Ouakid
J. For. Sci., 2021, 67(12):570-581 | DOI: 10.17221/77/2021-JFS
In recent years, the cork oak forests that characterise the Mediterranean region have been exposed to various factors that result in their degradation. These cork oak trees, due to increasingly accentuated anthropogenic activity, undergo withering at different scales.The objective of the study is to assess the impact of various factors that degrade cork oak forests in the Mediterranean region located in northeastern Algeria, and this was achieved by prospecting 22 sampling locations. This allowed the creation of a database containing 745 trees that were observed and 27 measured variables. Different readings were then taken into consideration based...