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Journal articles on the topic 'Tree slenderness coefficient'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Hanum, S. F., I. D. P. Darma, M. B. Atmaja, G. A. E. Oktavia, H. Merriansyah, and A. Fauzi. "Tree slenderness coefficient at Bali Botanic Garden." IOP Conference Series: Earth and Environmental Science 918, no. 1 (2021): 012038. http://dx.doi.org/10.1088/1755-1315/918/1/012038.

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Abstract Standing trees has a higher risk regarding structural damage that can cause trees or parts of trees to fail. Meanwhile, Bali Botanic Garden is located in a highland area that periodically gets natural disasters such as heavy wind. However, the information on tree stability is little known. Therefore, tree stability at Bali Botanic Garden was assessed using tree slenderness coefficient (SC) as an indicator. Purposive sampling technique was adopted for locations which highly visited. A total of 624 trees with dbh>40 cm were examined as samples. Trees were classified based on their SC

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2

Wang, Yue, Stephen J. Titus, and Valerie M. LeMay. "Relationships between tree slenderness coefficients and tree or stand characteristics for major species in boreal mixedwood forests." Canadian Journal of Forest Research 28, no. 8 (1998): 1171–83. http://dx.doi.org/10.1139/x98-092.

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The slenderness coefficients of trees, defined as the ratio of total height to diameter at 1.3m above ground, have been widely used as an index of the resistance of trees to windthrow. For many European coniferous species, slenderness coefficients have been intensively studied, but very little information is available for the tree species in boreal mixedwoods of Canada. By applying correlation analysis and graphical approaches to permanent sample plots data from Alberta, the relationships between slenderness coefficients and tree or stand variables were investigated for the five major species

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3

Oladoye, A. O., P. O. Ige, Q. A. Onilude, and Z. T. Animashaun. "Slenderness coefficient models for tree species in Omo biosphere reserve, South-western Nigeria." Tropical Plant Research 7, no. 3 (2020): 609–18. http://dx.doi.org/10.22271/tpr.2020.v7.i3.075.

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This study was carried out to aid the prediction of tree slenderness coefficient using non-linear regression models for tree species in Omo Biosphere Reserve, Southwestern Nigeria. Systematic line transect design was adopted for the study. Three transects were laid with four plots on each transect at alternate positions which made a total of 12 sample plots (50 m × 50 m) in the study area. Diameter at breast height (DBH), diameter at the top, diameter at the middle and diameter at the base as well as total height and merchantable height of all trees were measured. Descriptive statistics, Pears

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4

Dancheva, A. V., and S. V. Zalesov. "Influence of thinning on protective pineries biosustainability in Northern Kazakhstan." FORESTRY BULLETIN 26, no. 4 (2022): 5–13. http://dx.doi.org/10.18698/2542-1468-2022-4-5-13.

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The article presents the results of thinnings in pineries of the Kazakh uplands in Northern Kazakhstan carried out for an over 70-year period and their influence on biosustainability (on the example of the state national natural park «Burabay»). The research objects are high-density mature pine forests growing in dry forest conditions. The results of research have shown that to the average values of the vital status indicator (VSI), the complex estimated indicator (CEI) and the tree slenderness coefficient (H/D), pine stands in most sections are characterized as «weakened». In forest stands af

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5

Shamaki, S. B. "Relationships between tree slenderness coefficients and stand characteristics for major plantation-grown species in North-western Nigeria." Tropical Plant Research 9, no. 1 (2022): 37–43. http://dx.doi.org/10.22271/tpr.2022.v9.i1.006.

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This study established relationships between tree slenderness coefficient (used as an index of resistance of trees to windthrow) and some stand characteristics of three major tree species used for plantation establishment in some part of North-western Nigeria. Tree measurements for diameter at breast height (DBH) and total tree height were conducted on 60 randomly selected temporary sample plots (TSP) of 20 × 20 m, while tree slenderness coefficient (TSC), basal area (BA), and tree volume were computed from the field data. Pearson correlation was used to establish a relationship between TSC an

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Đodan, Martina, and Sanja Perić. "Windthrow Resistance of Norway Spruce (Picea abies /L./ Karst.) Forest Cultures - Preliminary Results." South-east European forestry 10, no. 1 (2019): 77–88. http://dx.doi.org/10.15177/seefor.19-09.

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Background and Purpose: Forest damage by wind is an important cause of economic loss in commercial forestry in the Republic of Croatia, as well as in many other European countries. Thus, windthrow resistance of trees represents a significant issue. Spruce forest cultures have shown the lowest resistance to windthrow so far. Nevertheless, there is not much insight into the relationship between trees and stand resistance to wind in the region. The objectives of this paper are to: (i) provide first evidence of the relation between tree characteristics prior to storm event in completely destroyed

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Kiaei, Majid, Valiullah Moosavi, and Seyed Eshagh Ebadi. "Effects of altitude on density and biometric properties of hornbeam wood (Carpinus betulus)." Forest Systems 28, no. 2 (2019): e011. http://dx.doi.org/10.5424/fs/2019282-14490.

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Aim of the study: This study aimed to investigate the effect of altitude difference on the wood dry density, fiber dimensions, and morphological properties of hornbeam wood (Carpinus betulus L.).Area of study: The study area was located in the province of Mazandaran, north of Iran.Material and method: 18 mature trees were randomly selected and harvested at six altitude levels (300, 500, 700, 900, 1100, and 1300 m) in the north of Iran. The clear test samples‎ were prepared‎ at diameter at breast height (DBH) to measure the wood dry density, fiber length, fiber diameter, cell wall thickness, Ru

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8

Karlinasari, L., U. Adzkia, Y. Fredisa, M. M. Rahman, N. Nugroho, and I. Z. Siregar. "Tree form morphometrics of Agathis dammara and Acacia mangium in the IPB’s Dramaga Landscape Campus, Bogor." IOP Conference Series: Earth and Environmental Science 918, no. 1 (2021): 012015. http://dx.doi.org/10.1088/1755-1315/918/1/012015.

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Abstract Tree growth comprises diverse tree forms and crown shapes that are influenced by the growing space and are related to biomechanical responses. Due to the complex structures of tree forms and crown architecture, more understanding of their functions is necessary. The study aimed to evaluate the morphometrics of two tree species of contrasting tree forms. Each represents excurrent and decurrent crown architectures located in the Dramaga Campus Landscape, Bogor. Morphometric analysis was conducted on those two species, namely excurrent agathis (n=23 trees) and decurrent mangium (n= 15 tr

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Mičovský, J. "Ecological stability of alpine treeline ecotone formed by beech (Fagus sylvatica L.) in Ďumbier Low Tatras." Beskydy 7, no. 2 (2014): 87–98. http://dx.doi.org/10.11118/beskyd201407020087.

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The paper analyses the results of the ecological stability research of beech (Fagus sylvatica L.) stands at the alpine tree-line ecotone in the Ďumbier part of Law Tatras. The applied methodology by Vološčuk (2000) is based on the approximation of the current tree species composition with respect to the original ones, crown ratio, slenderness quotient, sanitary coefficient and vertical species profile of the stands. The resulting value of ecological stability of the stands, typologically classified into a group of forest types Fageto-Aceretum humile, was increased by approximation of 80.0–82.5

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Rudnicki, Mark, Uldis Silins, and Victor J. Lieffers. "Crown Cover Is Correlated with Relative Density, Tree Slenderness, and Tree Height in Lodgepole Pine." Forest Science 50, no. 3 (2004): 356–63. http://dx.doi.org/10.1093/forestscience/50.3.356.

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Abstract The objective of this study was to investigate the relationship between tree height, bole slenderness, and relative density with crown shyness (crown interstitial space) in even-aged lodgepole pine. In 10 lodgepole pine stands in Alberta, Canada, ranging in height from 5.6 to 22.1 m, 9–23 triangular plots were established. A plot consisted of three trees that formed the corners of the triangle; all plots were at theoretical crown closure. Within each triangle, the percentage crown closure (% CC) was related to the mean height, slenderness coefficient (SC, tree height/diameter), and re

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Kaźmierczak, Katarzyna. "The current growth increment of pine tree stands comprising three different age classes." Forest Research Papers 74, no. 2 (2013): 93–100. http://dx.doi.org/10.2478/frp-2013-0009.

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Abstract The study presents the results of an analysis of the pine tree growth increments (height increment, dbh increment, basal area increment and volume increment) for a 5-year period. The study involved Scots pine trees of Kraft’s class 1, 2 and 3 (dominant stand) in stands of different age classes (II, III, V) growing in fresh mixed coniferous (BMśw) and fresh coniferous (Bśw) forest habitats. The multivariate analysis of variance was performed to assess the statistical significance of age and dominance of trees within a stand on their increment. The dominance position was classified for

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Kaźmierczak, Katarzyna. "The current growth increment of pine tree stands comprising three different age classes." Forest Resaerch Papers 74 (2) (March 1, 2013): 93–100. https://doi.org/10.2478/frp-2013-0009.

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The study presents the results of an analysis of the pine tree growth increments (height increment, dbh increment, basal area increment and volume increment) for a 5-year period. The study involved Scots pine trees of Kraft’s class 1, 2 and 3 (dominant stand) in stands of different age classes (II, III, V) growing in fresh mixed coniferous (BMśw) and fresh coniferous (Bśw) forest habitats. The multivariate analysis of variance was performed to assess the statistical significance of age and dominance of trees within a stand on their increment. The dominance position was classified for eac

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13

Hanum, S. F., A. Rahayu, R. Iryadi, and D. P. Darma. "Tree Architecture Model and Tree Health Assessment Using Sonic 3D Tomograph Relationship in Bali Botanical Garden." Jurnal Manajemen Hutan Tropika (Journal of Tropical Forest Management) 29, no. 1 (2023): 99–108. http://dx.doi.org/10.7226/jtfm.29.1.99.

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The incident of fallen trees or broken branches is dangerous for tourists visiting Bali Botanical Garden. Tree health monitoring in locations with high human activity and near valuable properties is mandatory to minimize the potency of tree failure. Since the stand stability is influenced by biological and physical factors, multiple variables consisting of species characteristics (stem form), tree dimensions (height, diameter, and slenderness coefficient), and tree health were used as parameters of tree health. The aim of this study is to examine the health condition of trees located in XIV.G

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14

Sendi, Mohammad Rasoul Nazari, Iraj Hassanzad Navroodi, Hassan Poorbabaei, Mohammad Sheikhkanlu Milan, and Behzad Bakhshandeh. "Determination of lime tree (Tilia begonifolia Stev.) stems form based on quantitative parameters (Study area: Shafaroud forests of Guilan province, Iran)." Folia Forestalia, Series A - Forestry 56(4) (December 1, 2014): 165–70. https://doi.org/10.2478/ffp-2014-0018.

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The lime tree is one of the rare and valuable species that found in the Hyrcanian moist forests with economic as well as ecological value. Identification of the quantitative and qualitative features of this species is important. In order to investigate the stem form of this species in the Shafaroud forests of Guilan Province, 141 lime trees in 39 plots were analyzed during the four stages of small pole, pole, saw-timber, and maturity. In each plot, stem-diameter at different heights was measured by using the Spiegel Relaskop. Measurements and analyses included diameter at breast height(d.b.h.)

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15

Ezenwenyi, J. U., and O. Chukwu. "Effects of slenderness coefficient in crown area prediction for Tectona grandis Linn. f. in Omo Forest Reserve, Nigeria." Current Life Sciences 3, no. 4 (2017): 65–71. https://doi.org/10.5281/zenodo.996326.

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Crown area which is crown size, is closely related to the photosynthetic capacity of tree and it is an important parameter to characterize biomass, leaf area and wildlife habitats. Conversely, assessment of crown dimensions still remain one of the most difficult and tedious task in forestry. The difficult measurements and the sensitivity of crown dimension on management makes it desirable to develop estimation procedures based on variables that are easier to measure than crown extension itself. The main objective of this study was to develop and observe the effects of tree slenderness coeffici

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Villareal, Jayric F., Rafael U. Untong, Anisa U. Mispil, Cindy E. Poclis, Charry Mae S. Numeron, and Oliver S. Marasigan. "Comparative Fiber Morphology of Four Underutilized Native Tree Species in Maguindanao, Philippines." Environment and Natural Resources Journal 23, no. 4 (2025): 1–12. https://doi.org/10.32526/ennrj/23/20240311.

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The focus of this study was to characterize and compare the fiber morphology (fiber length, fiber diameter, lumen diameter, cell wall thickness, and cell wall fraction) and derived values (Runkel ratio, slenderness ratio, flexibility ratio, Mulhsteph ratio, rigidity coefficient, and Luce’s shape factor) of four underutilized native tree species grown in the Maguindanao region, namely; Dita (Alstonia scholaris (L.) R. Br.), Himbabao (Broussonetia luzonica Blanco), Tangisang Bayawak (Ficus variegata Blume), and Kalukoi (Ficus callosa Willd.). Wood samples from the selected trees (between 10-20 y

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17

Kanjevac, Branko, Miloš Račić, Jovan Dobrosavljević, and Nikola Martać. "Responses at the stand and tree level to ice storm injuries in beech forests in eastern Serbia." REFORESTA, no. 16 (December 29, 2023): 16–26. http://dx.doi.org/10.21750/refor.16.02.107.

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The paper presents the study on the condition and structural stability of European beech (Fagus sylvatica L.) stands after the 2014 ice storm disturbance. The research was conducted in three pure beech stands on the Rtanj mountain in eastern Serbia. The stand condition after the ice storm was analyzed using changes in taxation elements. The assessment of tree damage was done according to the ICP Forests methodology, while the structural stability of the stands and individual trees was analyzed using the slenderness coefficient. The obtained results indicate very heterogeneous responses of beec

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18

Fish, Heather, Victor J. Lieffers, Uldis Silins, and Ronald J. Hall. "Crown shyness in lodgepole pine stands of varying stand height, density, and site index in the upper foothills of Alberta." Canadian Journal of Forest Research 36, no. 9 (2006): 2104–11. http://dx.doi.org/10.1139/x06-107.

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Crown shyness is the empty space between crowns in fully stocked stands that is not related to tree-fall gaps. The objectives of this study were to determine the stand and site factors that control crown shyness in lodgepole pine (Pinus contorta Dougl. ex Loud.) stands and to evaluate whether stands experiencing crown shyness compensate for leaf area losses by maintaining longer crowns. We measured canopy closure (i.e., the inverse of crown shyness), crown radius and length, and green litterfall in stands of various height, relative density, and site index. Canopy closure decreased with stand

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19

Nazari Sendi, Mohammad Rasoul, Iraj Hassanzad Navroodi, Hassan Poorbabaei, Mohammad Sheikhkanlu Milan, and Behzad Bakhshandeh. "Determination of lime tree (Tilia begonifolia Stev.) stems form based on quantitative parameters (Study area: Shafaroud forests of Guilan province, Iran)." Folia Forestalia Polonica 56, no. 4 (2014): 165–70. http://dx.doi.org/10.2478/ffp-2014-0018.

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Abstract The lime tree is one of the rare and valuable species that found in the Hyrcanian moist forests with economic as well as ecological value. Identification of the quantitative and qualitative features of this species is important. In order to investigate the stem form of this species in the Shafaroud forests of Guilan Province, 141 lime trees in 39 plots were analyzed during the four stages of small pole, pole, saw-timber, and maturity. In each plot, stem-diameter at different heights was measured by using the Spiegel Relaskop. Measurements and analyses included diameter at breast heigh

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20

Lachowicz, Hubert, and Szymon Bijak. "Tree Age and Size Affect Selected Fiber Parameters in Black Locust (Robinia pseudoacacia L.) Wood." Forests 16, no. 1 (2025): 111. https://doi.org/10.3390/f16010111.

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The study investigates selected parameters describing the fibers of black locust (Robinia pseudoacacia L.) wood with regard to tree age and size (diameter). The material was collected in stands aged 38, 60, and 71 years growing on the mesotrophic sites in southwestern Poland. In each stand, we sampled trees from three diameter classes (thin, medium, and thick specimens). From each tree, we took two 20 mm × 20 mm × 30 mm wood samples, from which we cut slices from the tangential plane using a sliding microtome. The Olympus cellSens Standard software was used to take pictures of 15 fibers per sa

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Villareal, Jayric F., Cindy E. Poclis, Mark Gerry B. Barron, Reymark P. Rivera, and Oliver S. Marasigan. "Fiber Morphology of Syzygium tripinnatum (Blanco) Merr. Stemwood and Branchwood and Their Derived Values." Environment and Natural Resources Journal 23, no. 2 (2025): 1–9. https://doi.org/10.32526/ennrj/23/20240245.

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Syzygium tripinnatum (Blanco) Merr. is an indigenous fruit tree species in the Philippines. This study characterizes the fiber morphology (fiber length, diameter, lumen diameter, and cell wall thickness) and derived values (Runkel ratio, slenderness ratio, flexibility ratio, Mulhsteph ratio, and rigidity coefficient) of S. tripinnatum wood grown in the Philippines. The results revealed that branchwood fibers were 1.610% longer, and both fiber and lumen diameters were 2.170% and 9.600% thicker, respectively, compared to stemwood. However, the cell wall thickness of stemwood was 1.670% greater t

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Temitope Faleye, Omobolanle, Lucas Aderemi Akomolede, Olalekan Kehinde Ajayi, and Opeyemi Philips Akinsulire. "Crown stratification ratio models for Tectona grandis L. f in Oluwa Forest reserve, Nigeria." Acta Biologica Slovenica 64, no. 1 (2021): 70–90. http://dx.doi.org/10.14720/abs.64.1.15765.

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This research investigated crown ratio models for Tectona grandis plantation in Oluwa Forest reserve (Ondo State, Nigeria) using variables of slenderness coefficient and merchantable height. With three non-linear regression functions - logistic, Chapman-Richard and exponential we showed that basal area, tree stem volume and mean tree height per hectare were of high significance. In the same vein, there were fewer tree species in the class of higher diameter and height than there were in lower class. There were also more trees in the co-dominant and intermediate classes than in the dominant and

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23

Dhaka, RK, and DR Prajapati. "Growth attributes and wood properties of lesser-grown agroforestry tree species in the semi-arid zone for quality pulp and paper production." Journal of Agriculture and Ecology 13 (January 31, 2022): 150–59. http://dx.doi.org/10.58628/jae-2213-115.

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Growth traits, wood properties, fibre dimensions and fibre derived indices of five lesser-grown agroforestry tree species viz., Ailanthus excelsa, Eucalyptus tereticornis, Leucaena leucocephala, Melia dubia and Neolamarckia cadamba were studied to evaluate the suitability of these species for pulp and paper production in the semi-arid zone of Bundelkhand, India. The result showed that there was a significant variation for all the studied traits. The range of all the studied growth and wood traits among five pulpwood trees were recorded for tree height (5.2-5.9 m), GBH (20-24 cm), volume (0.017

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Lamesa, Abara, and Bekele Tsegaye. "Evaluation of fiber characteristics and basic density of Acacia melanoxylon (R.Br.) grown in Ethiopia for pulp and paper making." Annals of Civil and Environmental Engineering 6, no. 1 (2022): 053–61. http://dx.doi.org/10.29328/journal.acee.1001041.

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The fiber characteristics and basic density of Acacia melanoxylon were investigated for its potential as a raw material for pulp and paper production. Six trees from the even-aged stand and similar diameter class were selected randomly from the Chencha district of Ethiopia. Wood disks were systematically cross-cut from a log along tree height levels, at the bottom (10%), middle (50%) and top (90%) of the merchantable height and blocks of wood (2 cm x 2 cm x 2 cm) were taken from pith to periphery at near pith (10%), middle (50%) and near bark (90%) of disk radius. Fiber maceration and basic de

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Beldjazia, Amina, Khaled Missaoui, Rahul Gawai, et al. "Phenology characteristics and demographic structure of Aleppo pine in the Algerian mediterranean forest: The case study of El-Harhouria afforestation." Geografie 129, no. 1 (2024): 43–59. http://dx.doi.org/10.37040/geografie.2024.004.

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The structural characteristics of tree populations and their spatial distribution is an essential indicator of forest health. A subjective sampling of the Aleppo pine (Pinus halepensis Mill) of El-Harhouria afforestation in Algeria made it possible to establish the characteristics of this plant formation. In this case, five plots of 900 m2 were subjected to the following dendrometric measurements: circumference, total elevation, slenderness coefficient, and density of trees. The diachronic measurement of the total photosynthesis (Normalized Difference Vegetation Index) was estimated with remot

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BUDEANU, Marius, and Neculae SOFLETEA. "Stem and Crown Characteristics of Norway Spruce [Picea abies (L.) Karst] Populations from Romanian Carpathians." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 41, no. 2 (2013): 593. http://dx.doi.org/10.15835/nbha4129177.

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To establish the most important Norway spruce Romanian populations, open-pollinated progeny of ten plus trees originating from 33 seed stands mapped in the Romanian Carpathians have been evaluated for stem and crown characteristics at the age of 30 years, in two field trials: one established in their natural range (BreÅ£cu trial), while the second was located outside of their natural range, in Subcarpathian lands (Avrig trial). Significant (p < 0.05) differences were found among the seed stands in both sites for most of the characteristics, suggesting an additive genetic control with differ

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Oluwagbemiga, Ige Peter, and Hussein Ismaheel Olalekan. "Above-ground bole biomass and carbon stock of recreational trees at Agodi Gardens, Oyo State, Nigeria." Journal of Forests 11, no. 2 (2024): 24–34. http://dx.doi.org/10.18488/jof.v11i2.3967.

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This study used allometric equations to evaluate the biomass and carbon stock of recreational trees at Agodi Gardens in Ibadan Metropolis. Stratified sampling technique was used to delineate 15 plots (25m x 25m). Six allometric equations were selected to estimate Aboveground Biomass (AB) of the tree species. Models selected were assessed based on highest adjusted coefficient of determination (AdjR2), significant F-ratio (P<0.05) and least Root Means Square Error (RSME). A total of 220 trees belonging to 18 species were encountered. The dominant Diameter at Breast Height (DBH) and Height (Ht

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Eguakun F. S., Ogoro M., and Braide F. F. "Inventory and Spatial Distribution of Trees in Eleme Local Government Area, Port Harcourt, Nigeria." Asian Journal of Environment & Ecology 22, no. 3 (2023): 141–52. http://dx.doi.org/10.9734/ajee/2023/v22i3499.

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Urban trees provide a wide range of environmental, economic and social benefits to those that live and work within and outside the community. Urban forest assessments are essential in supporting urban forest management and planning to improve environmental quality and human health in cities. The study investigated woody trees distributions in Eleme Local Government Area (Apkajo) Port Harcourt Nigeria, The study area was divided into 3 categories (Academic, Residential and Religious). Total woody tree species enumerations were carried out using tree identification and measurement while remote s

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Olajiire-Ajayi, Bolanle L., Oluwasola Abiodun Ogundana, and Dennis Akinjide Adenuga. "ASSESSMENT OF STAND GROWTH AND SLENDERNESS COEFFICIENT OF NAUCLEA DIDERRICHII A. CHEV AND TERMINALIA IVORENSIS DE WILD AND THUR IN FORESTRY RESEARCH INSTITUTE OF NIGERIA, (FRIN) ARBORETUM, OYO STATE, NIGERIA." FUDMA JOURNAL OF SCIENCES 8, no. 4 (2024): 55–61. http://dx.doi.org/10.33003/fjs-2024-0804-2522.

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The contribution of trees to human well-being cannot be overemphasized. The study assessed the growth characteristics and Slenderness Coefficient (SLC) of Nauclea diderrichii and Terminalia ivorensis two tree species in Forestry Research Institute of Nigeria (FRIN) Arboretum. A complete sampling of all trees encountered in each plantation were counted and their Diameter at breast height (Dbh) and total height (Ht) were measured using Haga altimeter and girthing tape respectively. Basal area (BA) and Volume (Vol) were computed using allometric formulae. The mean Dbh, Ht, BA and Vol of Nauclea d

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Liu, Xiaodong, Uldis Silins, Victor J. Lieffers, and Rongzhou Man. "Stem hydraulic properties and growth in lodgepole pine stands following thinning and sway treatment." Canadian Journal of Forest Research 33, no. 7 (2003): 1295–303. http://dx.doi.org/10.1139/x03-061.

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The objective of this study was to explore the effects of wind-caused sway on the growth and stem hydraulic properties of fire-origin juvenile lodgepole pine (Pinus contorta Dougl. ex Loud.) stands after thinning. Nine plots were thinned and trees were treated to suppress or exacerbate sway from the wind: thinned and supported with a pole (TP), thinned with an added sail (TS), thinned control (TC), and unthinned control (UC). Terminal leader growth, radial increment, and earlywood and latewood widths at breast height were measured for the last six growing seasons. The specific hydraulic conduc

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Yadav, Ronak, Dheerendra Kumar, and Tabassum Ansari. "Wood Fiber Characteristics of Underutilized Poplar Species and Comparision with P. deltoides in Terms of their Pulp and Paper Quality." Journal of Biomedical Research & Environmental Sciences 3, no. 12 (2022): 1433–39. http://dx.doi.org/10.37871/jbres1617.

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The pulp and Paper industries are growing at a tremendous rate. To satisfy the raw material supply and sustainability of their future industries need an alternative resource from fast-growing tree species. Poplar is one of the world’s fastest-growing lightwood trees with its used in several industries. The present work relies on the comparative fiber morphological dimensions of four species of poplar i.e. Populus alba L, Populus ciliata Wall. ex Royle, Populus euphratica Oliv, and Populus nigra L. The quality of pulp and paper was directly related to the fiber dimensions i.e., fiber length, fi

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Ronak, Yadav. "Wood Fiber Characteristics of Underutilized Poplar Species and Comparision with P. deltoides in Terms of their Pulp and Paper Quality." J Biomed Res Environ Sci 3, no. 11 (2022): 1433–39. https://doi.org/10.37871/jbres1617.

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The pulp and Paper industries are growing at a tremendous rate. To satisfy the raw material supply and sustainability of their future industries need an alternative resource from fast-growing tree species. Poplar is one of the world’s fastest-growing lightwood trees with its used in several industries. The present work relies on the comparative fiber morphological dimensions of four species of poplar i.e. Populus alba L, Populus ciliata Wall. ex Royle, Populus euphratica Oliv, and Populus nigra L. The quality of pulp and paper was directly related to the fiber dimensions i.e., fiber leng

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Rocha Martins, Walmer Bruno, Victor Pereira De Oliveira, and Michael Douglas Roque Lima. "Use of morphometry in the arborization of Paragominas city, Pará, Brazil, with Handroanthus impetiginosus (Mart. ex DC.) Mattos (Bignoniaceae)." REVISTA AGRO@MBIENTE ON-LINE 12, no. 3 (2018): 213. http://dx.doi.org/10.18227/1982-8470ragro.v12i3.4975.

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The study of the morphometry of individual trees, especially those planted in urban spaces has become important for the effective planning of available space use. The objective of this study was to describe the morphometric variables for individuals of the species Handroanthus impetiginosus Mattos (pink trumpet tree, pink ipe) used for urban tree-planting in the municipality of Paragominas, Pará State, northern Brazil. The study evaluated 15 continuously distributed individual trees per street, one street per neighborhood. For each sampled tree, the dendrometric d

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Tembe, E. T., David Oriabure Ekhuemelo, and R. Astuwe. "MORPHOLOGICAL PROPERTIES OF HURA CREPITANS L. (EUPHORBIACEAE) AS PROSPECTIVE RESOURCE FOR PULP AND PAPERMAKING." FUDMA JOURNAL OF SCIENCES 5, no. 1 (2021): 186–92. http://dx.doi.org/10.33003/fjs-2021-0501-552.

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Hura crepitans L. (Euphorbiaceae) is a tropic tree species that was investigated for pulp and paper characteristics in this study. The diameters of five (5) different stands of Hura crepitans trees were first determined using diameter tape. Wood slivers were obtained from sapwood of the trees parallel to grain and at three (3) different positions along the axis, at the base (5%), middle (50%) and top (90%). The wood slivers were macerated in a mixture of equal volumes of glacial acetic acid and hydrogen peroxide at between 80 -100 degrees Celsius for 2 hours. Macerated fibres were washed and u

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Moravčík, M. "Derivation of target stocking for forests of Norway spruce vegetation zone in Slovakia." Journal of Forest Science 53, No. 8 (2008): 352–58. http://dx.doi.org/10.17221/2183-jfs.

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The present paper deals with derivation of target stocking in forests of Norway spruce vegetation zone. Target stocking in forests with prevailing ecological and social functions is the stocking when the forest fulfils demanded functions in the best way. For forests in the Norway spruce vegetation zone target stocking was derived by original procedures as an optimum stocking in harmonization of demands on the fulfilment of ecological functions (especially erosion control, hydrological and water protection ones), securing static stability and preconditions for the formation and growth of natura

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Valenzuela, Camilo E., Paulina Ballesta, Sunny Ahmar, et al. "Haplotype- and SNP-Based GWAS for Growth and Wood Quality Traits in Eucalyptus cladocalyx Trees under Arid Conditions." Plants 10, no. 1 (2021): 148. http://dx.doi.org/10.3390/plants10010148.

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The agricultural and forestry productivity of Mediterranean ecosystems is strongly threatened by the adverse effects of climate change, including an increase in severe droughts and changes in rainfall distribution. In the present study, we performed a genome-wide association study (GWAS) to identify single-nucleotide polymorphisms (SNPs) and haplotype blocks associated with the growth and wood quality of Eucalyptus cladocalyx, a tree species suitable for low-rainfall sites. The study was conducted in a progeny-provenance trial established in an arid site with Mediterranean patterns located in

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Amorim, Erick Phelipe, João Roberto Menucelli, Caio Henrique Santos, et al. "WOOD EVALUATION OF Eucalyptus pellita F.Muell. AND Eucalyptus tereticornis Smith AS POTENTIAL FOR PULP AND PAPER PRODUCTION." Revista do Instituto Florestal 33, no. 2 (2021): 139–49. http://dx.doi.org/10.24278/2178-5031.202133202.

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This paper aimed to determine the quality indexes for paper and cellulose based on the fiber features from two wood species of interest, Eucalyptus pellita and E. tereticornis. The mean annual increment (IMA) was calculated by measuring DBH and Height (25 years), a 10 cm disk from each tree was collected for density determinations and anatomical studies for cellulose and paper. Tree height, trunk diameter at 1.30 m in height (DBH), and volume per tree were higher in E. pellita when compared to E. tereticornis. The volume per hectare and average annual increment were higher in E. tereticornis c

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Zawieja, Bogna, Katarzyna Kaźmierczak, and Laura Slebioda. "Application of functional analysis in dendrometry using five-year growth of selected dendrometric traits of scots pine (Pinus sylvestris L.)." Biometrical Letters 61, no. 2 (2024): 161–80. https://doi.org/10.2478/bile-2024-0011.

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Abstract The differentiation between age classes of Scots pine (Pinus sylvestris L.) was analyzed with regard to the five-year increment of seven traits: height growth (zh5), diameter growth at breast height (zd5), cross-sectional area growth at breast height (zg5), volume growth (zv5), volume growth intensity coefficient (i5), and slenderness (s). Measurements were made in five periods for 24-year-old trees and six periods for 33-year-old trees, all growing in fresh mixed coniferous forest sites. Repeated measures data analysis was conducted separately for all traits. Multivariable functional

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Valenzuela, Camilo, Paulina Ballesta, Carlos Maldonado, et al. "Bayesian Mapping Reveals Large-Effect Pleiotropic QTLs for Wood Density and Slenderness Index in 17-Year-Old Trees of Eucalyptus cladocalyx." Forests 10, no. 3 (2019): 241. http://dx.doi.org/10.3390/f10030241.

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Eucalyptus cladocalyx F. Muell is a tree species suitable for low-rainfall sites, even with annual average precipitation as low as 150 mm per year. Its wood is classified as highly durable and its permanence in soil is longer than 25 years, so it can be used for multiple applications. Given that about 41% of the world’s land area is classified as drylands, added to the impact of climate change on the availability of water resources, it becomes necessary to use plant species that can tolerate environments with low water availability. In this study, a Bayesian analysis of genetic parameters show

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Gajan, Sivapalan. "Modeling of Seismic Energy Dissipation of Rocking Foundations Using Nonparametric Machine Learning Algorithms." Geotechnics 1, no. 2 (2021): 534–57. http://dx.doi.org/10.3390/geotechnics1020024.

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The objective of this study is to develop data-driven predictive models for seismic energy dissipation of rocking shallow foundations during earthquake loading using multiple machine learning (ML) algorithms and experimental data from a rocking foundations database. Three nonlinear, nonparametric ML algorithms are considered: k-nearest neighbors regression (KNN), support vector regression (SVR) and decision tree regression (DTR). The input features to ML algorithms include critical contact area ratio, slenderness ratio and rocking coefficient of rocking system, and peak ground acceleration and

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Afrifah, Kojo Agyapong, and Enoch Adjei-Mensah. "Anatomical and chemical characterization of Alstonia boonei for pulp and paper production." Les/Wood 70, no. 2 (2021): 5–18. http://dx.doi.org/10.26614/les-wood.2021.v70n02a02.

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Alstonia boonei, an abundant lesser utilized species within the West African Subregion, was evaluated as an alternative raw material for pulp and paper production. The basic density (BD), fibre characteristics [fibre length (FL), fibre diameter (FD), lumen diameter (LD) and wall thickness (WT)], derived anatomical indices [Flexibility Ratio (FR), Slenderness Ratio (SR), Rigidity Coefficient (RC), Luce’s Shape Factor (LSF), Solids Factor (SF) and Runkel Ratio (RR)] and chemical composition (lignin, holocellulose, 1% NaOH solubility and ash contents) of A. boonei were studied to evaluate variati

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Nezu, Ikumi, Futoshi Ishiguri, Haruna Aiso, et al. "Selection of Eucalyptus camaldulensis Families for Sustainable Pulpwood Production by Means of Anatomical Characteristics." Forests 12, no. 1 (2020): 31. http://dx.doi.org/10.3390/f12010031.

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Sustainable pulpwood production from fast-growing tree plantations is needed for pulp and paper industries. To increase the pulpwood production efficiency, the anatomical characteristics and derived-wood properties of 75 trees from 15 half-sib families of Eucalyptus camaldulensis Dehnh. planted in Thailand were investigated, and then the family was classified by suitability of wood as raw material for pulp and paper products using principal component analysis and clustering. The mean values of vessel diameter, vessel frequency, fibre diameter, fibre lumen diameter, and fibre wall thickness at

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Данчева, А. В., С. В. Залесов та Д. В. Дмитриева. "Анализ состояния искусственных насаждений сосны кедровой сибирской при разных схемах посадки в условиях лесостепной зоны (на примере дендрария Сибирской лесной опытной станции (ЛОС) города Тюмени)". Вестник Бурятской государственной сельскохозяйственной академии имени В. Р. Филиппова, № 1(78) (27 березня 2025): 69–77. https://doi.org/10.34655/bgsha.2025.78.1.009.

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Приведены результаты исследования состояния 44-летних лесных культур сосны кедровой сибирской, произрастающих в лесостепной зоне Тюменской области, в условиях дендрария Сибирской лесной опытной станции (ЛОС) города Тюмень. Изучение состояния древостоя проведено на двух временных пробных площадях (ВПП), заложенных на участках с разной схемой размещения деревьев. Деревья на участке 1 (ВПП-1) высажены по схеме 4х4 метра, на участке 2 (ВПП-2) – со схемой посадки 2,5х1 метр. Установлено, что древостой кедра сибирского на участке со схемой размещения деревьев 4х4 м является среднеполнотным, растущим

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Šušić, Nikola, Martin Bobinac, and Siniša Andrašev. "Effects of two different thinning methods on the diameter and basal area increments of silver lime (Tilia tomentosa Moench) target trees in Fruška Gora (Serbia)." Annals of Forest Research 65, no. 2 (2022): 3–14. http://dx.doi.org/10.15287/afr.2022.2392.

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This paper analyses the cumulative effects of selective thinning and thinning from below on diameter and basal area increments of target trees after 25/26 years in 52, 69- and 86-year-old silver lime (Tilia tomentosa Moench) stands. Two target tree collectives were analysed: (1) elite trees selected between 1993–1994 from permanent sampling plots (selective thinning method), and (2) a ‘comparable collective’ of target trees selected in 2019 (25/26 years later) according to the same criteria as the elite trees, in the same stands thinned from below. Elite trees that were selectively thinned had

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Péllico Netto, Sylvio, Flavio Roberto Stefanello, Ornélio Paulino Estevão Nhaduco, et al. "Modeling tree form in forest stands of Pinus taeda L. in Southern of Brazil." Caderno Pedagógico 22, no. 1 (2025): e13286. https://doi.org/10.54033/cadpedv22n1-093.

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Biometricians have been studying tree shapes since the 18th century in Europe, initially using shape quotients. With the advent of linear regression techniques, the field evolved toward the development of volumetric models, which incorporate the effects of tree shapes into the coefficients of the fitted equations. This study presents two methodological themes: the volumetric equivalence form factor (VEFF) based on Pollanschütz concept, and the rational form factor (RFF) derived from ratio estimation. Data from 159 trees were used to fit the RFF, revealing a strong correlation with the h/d vari

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GHALEHNO, MOHAMMAD DAHMARDEH, BABAK NOSRATI SHESHKAL, FARHAD KOOL, MIHA HUMAR, and MOHSEN BAHMANI. "CHARACTERIZATION OF ANATOMICAL, MORPHOLOGICAL, PHYSICAL AND CHEMICAL PROPERTIES OF KONAR (ZIZIPHUS SPINA-CHRISTI) WOOD." WOOD RESEARCH 66(6) 2021 66, no. 6 (2021): 912–20. http://dx.doi.org/10.37763/wr.1336-4561/66.6.912920.

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The goal of this research is to investigate some morphological (fibre length, fibre diameter, cell wall thickness, Runkel coefficient, flexibility coefficient, slenderness coefficient, rigidity coefficient, Luce's coefficient, solid coefficient), physical (dry wood density, volumetric shrinkage) and chemical (cellulose, hemicellulose, lignin, ash and acetone soluble extractives contents) composition of Konar (Ziziphus spina-christi) wood grown in Hormozgan province, Iran. For this purpose, three normal trees were selected randomly and a disk was cut from each one at breast height. Anatomical i

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Kamarubayana, Legowo, Zuhdi Yahaya, and Hasanuddin Hasanuddin. "INCREASE IN AVERAGE CROP AND LEANNESS OF EUCALYPTUS (EUCALYPTUS PELITA) AT PT ITCI HUTANI MANUNGGAL, KUTAI KARTANEGARA REGENCY." Technium: Romanian Journal of Applied Sciences and Technology 4, no. 6 (2022): 50–57. http://dx.doi.org/10.47577/technium.v4i6.7024.

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The purpose of this study was to determine the slenderness and current annual increment) both in diameter and height of the area. The expected results of this study can provide information about plant leanness and plant growth in Ekaliptus (Eucalyptus pelita) at PT ITCI Hutani Manunggal Kutai Kartanegara Regency. Also, as a consideration in determining the type of plant that is suitable for or better for growth than plants Ekaliptus (Eucalyptus pelita), both at the planting site used for this research and at other locations. The sample used in this study was 40 trees in a purposive way.

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Ashwath, M. N., B. N. Sathish, A. Akshayakumari, H. R. Rashmitha, Leosh D. Alex, and G. M. Devagiri. "Suitability of Acrocarpus fraxinifolius as a Pulping Raw Material." International Journal of Economic Plants 10, Feb, 1 (2023): 012–15. http://dx.doi.org/10.23910/2/2023.0506a.

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The present study emphasized on wood trait indices of Acrocarpus fraxinifolius for understanding the suitability of the species for paper and pulp industries. The study was conducted at the College of Forestry, Ponnampet, Karnataka in 2020. The wood core samples were collected from the trees falling under 130 to 150 cm girth class, standing in coffee-based agroforestry systems of Kodagu, Karnataka, India. A total of 12 wood core samples were collected using the Presseler’s increment borer at breast height level. For wood fibre analysis the core portion was divided and three, i.e., near to the

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Sousa Júnior, Wagner Patrício de, Ana Márcia Macedo Ladeira Carvalho, Angélica de Cássia Oliveira Carneiro, et al. "Fiber quality indices of Corymbia spp. and Eucalyptus spp. wood for the selection of genetic materials for pulp production." Revista Árvore 49, no. 1 (2024): 1–12. https://doi.org/10.53661/1806-9088202549263840.

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The selection of genetic materials for obtaining cellulosic pulp and paper production necessitates evidence of efficiency in terms of silvicultural performance and industrial processing. In this context, this study aimed to select genetic materials from Eucalyptus spp. and Corymbia spp. for pulp production. The selection was achieved through cluster analysis, based on the morphological traits of the main anatomical elements of the wood, the screened brown pulp yield, and fiber quality indices (Runkel ratio, slenderness ratio, Mulsteph coefficient, and flexibility coefficient). Sixteen genetic

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MURANYI, Alexandra Elena, Mircea Ioan VARGA, Florin Alexandru REBREAN, and Ioan TĂUT. "The Effects of Freezing Rain on Forest Stands Administered by Zalău Forestry Department During 2014-2022 Period." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 80, no. 2 (2023): 44–51. http://dx.doi.org/10.15835/buasvmcn-hort:2022.0030.

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Freezing rain is a rare and extremely dangerous meteorological phenomenon, consisting of the fall of liquid precipitation, while the air temperature at ground level falls below 0oC, favoring the freezing of raindrops and forming an ice sheet on the surfaces on which they are deposited. In Romania, the areas affected by the freezing rain phenomenon undergo significant changes regarding the structure and composition of the forest vegetation. The main purpose of this work is to figure out how to manage the forest stands affected by the freezing rain identifying optimal solutions for ecological re

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