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Journal articles on the topic 'Dbh increment'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Lee, Jeong-Min, Hyung-Sub Kim, Byeonggil Choi, et al. "High Variability in Urban Tree Growth: Necessity of Size-Dependent Estimation with Emphasis on Large-Diameter Trees." Forests 15, no. 12 (2024): 2091. http://dx.doi.org/10.3390/f15122091.

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The national level carbon sequestration estimation for urban trees generally relies on diameter at breast height (DBH) increments. However, limited research on urban tree growth has led to uncertain estimates. In this study, we determined the DBH increment of six major urban tree species in South Korea using three analytical methods (mean, linear regression, and generalized additive model) and two data classifications (total and segmented). Additionally, wedeterminded the aboveground woody biomass (AGWB) increment, which was calculated using the estimated DBH increment, and the accuracy of the

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2

Y Liao, C., V. V Podrázský, and G. B Liu. "Diameter and height growth analysis for individual White Pine trees in the area of Kostelec nad Černými lesy." Journal of Forest Science 49, No. 12 (2012): 544–51. http://dx.doi.org/10.17221/4723-jfs.

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Four theoretical growth functions, Mitscherlich, Logistic, Gompertz and Korf functions, were applied to the growth data on dbh and tree height of individual Eastern White Pine (Pinus strobus) trees to model their growth. The current increments, mean increments and relative growth rates of dbh and height as functions of age were given by derivation from the best fit growth functions. The growth processes of dbh and height were divided into three periods by the inflexion points of the corresponding current increment curves.

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3

Uçan, Hacı Abdullah, Emrah Özdemir, Serhun Sağlam, Gafura Aylak Özdemir, and Ender Makineci. "Diameter Increment Estimations of Open-Grown Stone Pine (Pinus pinea L.) Trees in Urban Parks in Istanbul, Türkiye." Sustainability 16, no. 22 (2024): 9793. http://dx.doi.org/10.3390/su16229793.

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Open-grown trees in cities can improve environmental conditions by providing sustainable ecosystem services. Reliable data are necessary for assessing the functions of urban trees. The diameter at breast height (DBH), diameter increment, and annual ring measurements are the main parameters in the development of reliable models. To model periodic mean diameter increments calculated for different time periods (5, 10, 15, 20, and 25 years), a total of 43 open-grown stone pines (Pinus pinea L.) of different diameter classes were sampled in several urban parks in Istanbul, Türkiye. The DBH was meas

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4

Amateis, Ralph L., Harold E. Burkhart, and Terese A. Walsh. "Diameter Increment and Survival Equations for Loblolly Pine Trees Growing in Thinned and Unthinned Plantations on Cutover, Site-Prepared Lands." Southern Journal of Applied Forestry 13, no. 4 (1989): 170–74. http://dx.doi.org/10.1093/sjaf/13.4.170.

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Abstract Individual tree dbh increment and survival equations were developed for predicting annual dbh growth and annual probability of survival of loblolly pine trees in thinned and unthinned plantations on cutover, site-prepared lands. The dbh increment equation predicts dbh increment froma potential dbh growth function multiplied by a modifier function. The survival equations predicts the probability of survival as a function of crown ratio and the tree's competitive position in the stand. When used together, the equations should be useful to foresters interested in predictingfuture dbh and

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5

Larocque, Guy R., and Peter L. Marshall. "Crown development in red pine stands. II. Relationships with stem growth." Canadian Journal of Forest Research 24, no. 4 (1994): 775–84. http://dx.doi.org/10.1139/x94-102.

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The development of red pine (Pinusresinosa Ait.) stands originating under different initial spacings was examined using three measures of growth efficiency that are similar in concept to relative growth rate: diameter at breast height (DBH) increment/crown width, DBH increment/crown projection, and DBH increment/foliage biomass. These three measures of efficiency decreased with increasing DBH in the absence of severe competition and increased with increasing DBH under severe competitive stress. This indicates that small trees occupied their aerial growing space better and utilized their foliag

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6

Lussier, Jean-Martin, Hubert Morin, and Réjean Gagnon. "Comparaison de la croissance de marcottes d'épinette noire (Piceamariana) adultes après coupe à celle d'individus issus de graines après feu." Canadian Journal of Forest Research 22, no. 10 (1992): 1524–35. http://dx.doi.org/10.1139/x92-203.

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Analysis was performed on 112 stems of black spruce (Piceamariana (Mill.) BSP) from the Réserve faunique des Laurentides to compare the growth in height, DBH, and volume of layers released by clear-cutting to the growth of individuals of comparable age originating from seeds after fire. The sampled stands originated from fires and clear-cuttings that occurred between 1894 and 1941. Stem analysis also permitted the calculation of specific volume increment, which corresponds to the annual volume increment divided by the surface of the cambium. Results show that height, DBH, and volume measured 6

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7

Morrison, I. K., and N. W. Foster. "Effect of nitrogen, phosphorus and magnesium fertilizers on growth of a semimature jack pine forest, northwestern Ontario." Forestry Chronicle 71, no. 4 (1995): 422–25. http://dx.doi.org/10.5558/tfc71422-4.

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In the spring of 1969, an experiment to test response (mean DBH, BA, BA%, and total and merchantable volume increments) to nitrogen (N), phosphorus (P) and magnesium (Mg) fertilizers, singly and in combination, was established in a semimature jack pine (Pinus banksiana Lamb.) forest on a Site Class III sandy site in the Dryden-Sioux Lookout area of northwestern Ontario, Canada. Analysis of variance of 10-year increments revealed highly significant (P = 0.01) responses of mean DBH increment, BA and percent BA increments, and total and merchantable volume increments to N, but no response to eith

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8

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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9

Larocque, G. R. "Examining Different Concepts for the Development of a Distance-Dependent Competition Model for Red Pine Diameter Growth Using Long-Term Stand Data Differing in Initial Stand Density." Forest Science 48, no. 1 (2002): 24–34. http://dx.doi.org/10.1093/forestscience/48.1.24.

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Abstract Red pine (Pinus resinosa Ait.) data collected from age 13 to age 43 in a spacing trial were used to develop a distance-dependent individual-tree diameter growth model. The traditional concept of zone of influence in competition indices was redefined, and differences in asymmetry in above- and below-ground competition were represented. The availability of remeasured crown dimensions data allowed for realistic representation of the dynamics of crown interference at the canopy level. Diameter at breast height (dbh) increment was expressed in terms of absolute growth rate, relative growth

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10

Liu, Jiping, and Harold E. Burkhart. "Notes: Spatial Autocorrelation of Diameter and Height Increment Predictions from Two Stand Simulators for Loblolly Pine." Forest Science 40, no. 2 (1994): 349–56. http://dx.doi.org/10.1093/forestscience/40.2.349.

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Abstract Using Moran indices, the spatial autocorrelation properties of diameter and height increment prediction from two loblolly pine stand simulators, TRULOB and PTAEDA2, were examined. Preliminary results indicated that the distance-dependent stand simulator (PTAEDA2) generated more desirable error structures, i.e., less spatially dependent, than the distance independent stand simulator (TRULOB) did both for total height and for dbh (diameter at breast height). The distribution of autocorrelation test statistics was positively shifted and positively skewed, possibly due to the lack of abil

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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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12

Wang, Hongxing, Luping Jiang, Feifan Zhang, and Xiyang Zhao. "Effects of Planting Density and Nitrogen Fertilization on Growth Traits and Leaf and Wood Characteristics of Three Poplar Clones." Sustainability 16, no. 19 (2024): 8561. http://dx.doi.org/10.3390/su16198561.

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A comprehension of the effects planting density and nitrogen (N) fertilization have on the physiological and morphological characteristics of trees is critical for optimizing the require size and characteristics of wood products. We evaluated the growth traits and the leaf and wood characteristics of three clone poplars including Populus simonii × P. nigra ‘Xiaohei’, ‘Xiaohei-14’ and ‘Bailin-3’ under five planting densities (1666, 1111, 833, 666, and 555 tree ha−1) and four N fertilization rates (0, 100, 160, and 220 g tree−1 year−1). The results show that the clone type significantly affected

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13

Dubois, Héloïse, Hugues Claessens, and Gauthier Ligot. "Towards Silviculture Guidelines to Produce Large-Sized Silver Birch (Betula pendula Roth) Logs in Western Europe." Forests 12, no. 5 (2021): 599. http://dx.doi.org/10.3390/f12050599.

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Forest health problems arising from climate change, pests and pathogens are a threat to the main timber tree species. As a result, silver birch (Betula pendula Roth) has become a precious asset for meeting oncoming forestry challenges in western Europe. However, silviculture guidelines to produce high-value birch logs in this region are lacking. Producing large-sized birch trunks requires crown release, i.e., removing crown competitors around selected target trees. These interventions are currently seldom carried out or else too late when the growth potential of the trees has already diminishe

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14

Bloomberg, W. J., and A. A. Hall. "Effects of Laminated Root Rot on Relationships Between Stem Growth and Root-System Size, Morphology, and Spatial Distribution in Douglas-fir." Forest Science 32, no. 1 (1986): 202–19. http://dx.doi.org/10.1093/forestscience/32.1.202.

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Abstract Root-system size (length, cross-sectional area, and volume) was measured in 30- to 40-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) in five stands. Mean root-system size varied widely among stands (length 2,485-5,316 cm; cross-sectional area 4,070-13,520 cm²; volume 72,760-251,020 cm³). Percentage of roots decayed by Phellinus weirii varied among stands and among root orders ranging 22-83 percent by length and 21-84 percent by volume. Root size distribution in P. weirii-infected trees was generally of the same magnitude and pattern as in healthy trees. Diameter at breast

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15

Sharma, Ram P., Igor Štefančík, Zdeněk Vacek, and Stanislav Vacek. "Generalized Nonlinear Mixed-Effects Individual Tree Diameter Increment Models for Beech Forests in Slovakia." Forests 10, no. 5 (2019): 451. http://dx.doi.org/10.3390/f10050451.

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Individual tree growth and yield models precisely describe tree growth irrespective of stand complexity and are capable of simulating various silvicultural alternatives in the stands with diverse structure, species composition, and management history. We developed both age dependent and age independent diameter increment models using long-term research sample plot data collected from both monospecific and mixed stands of European beech (Fagus sylvatica L.) in the Slovak Republic. We used diameter at breast height (DBH) as a main predictor and other characteristics describing site quality (site

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16

Quicke, Harold E., Ralph S. Meldahl, and John S. Kush. "A Survival Rate Model for Naturally Regenerated Longleaf Pine." Southern Journal of Applied Forestry 21, no. 2 (1997): 97–101. http://dx.doi.org/10.1093/sjaf/21.2.97.

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Abstract An individual tree annual survival rate model was developed for naturally regenerated, even-aged longleaf pine (Pinus palustris Mill.). Development was based on 44,000 survival observations on 15,000 trees occurring on 202 permanent sample plots located in central and southern Alabama, southern Mississippi, southwest Georgia, and northern Florida. Variables used in the model were predicted diameter increment and diameter at breast height (dbh). Predicted annual survival rates ranged from 0.92 for a tree with a 1 in. dbh and an annual diameter increment of O.05 in., to over 0.99 for an

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17

Cordeiro, Iracema Maria, Gustavo Schwartz, and Paulo Luiz Barros. "EFEITOS DO CLIMA SOBRE O INCREMENTO DIAMÉTRICO DE PARICÁ (Schizolobium parahyba var. amazonicum – Fabaceae) EM PLANTIOS COMERCIAIS." Nativa 8, no. 2 (2020): 246. http://dx.doi.org/10.31413/nativa.v8i2.9009.

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O entendimento das interações ambientais entre variáveis climáticas como precipitação, radiação fotossintéticamente ativa, temperatura e umidade relativa e espécies florestais possibilita o melhoramento do desempenho silvicultural. Neste trabalho, realizado na fazenda Tramontina, Pará, Brasil, foram avaliados os efeitos combinados destas variáveis climáticas sobre o incrementro diamétrico do Paricá (Schizolobium parahyba var. amazonicum) em monocultivo e em associação com Freijó (Cordia goeldiana), Mogno (Switenia macrophylla) combinadas ou não com a espécie agrícola Curauá (Ananas comosus var

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18

Robitaille, Lise, Gilles Sheedy, and Yvon Richard. "Effets de l'éclaircie précommerciale et de la fertilisation sur un gaulis de 10 ans à dominance de bouleau jaune." Forestry Chronicle 66, no. 5 (1990): 487–93. http://dx.doi.org/10.5558/tfc66487-5.

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One yellow birch was selected every 4.5 metres in a sugar maple-yellow birch sapling stand, and released from competition by removing all stems whose crown extended into a column of equal radius (R) from the stump to the top of the tree. The experiment comprises three studies and includes four thinning intensities (R=0 m, R=0,5 m, R= 1,0 m, R= 1,5 m) and five fertilization treatments (three with N-P-K and two with N). Dbh, story and natural pruning data were taken on 2 258 yellow birches distributed in 48 sample plots; heights were measured on 10 per 100 of the trees.Five years later, the resu

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19

Seo, Yeongwan, Daesung Lee, and Jungkee Choi. "Developing and Comparing Individual Tree Growth Models of Major Coniferous Species in South Korea Based on Stem Analysis Data." Forests 14, no. 1 (2023): 115. http://dx.doi.org/10.3390/f14010115.

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Tree growth in Korean red pine (Pinus densiflora, hereafter Pd), Korean white pine (Pinus koraiensis, hereafter Pk), and Japanese larch (Larix kaempferi, hereafter Lk) was modeled using Logistic, Korf, Gompertz, Chapman-Richards, and Weibull equations and stem analysis data from sample trees: 38 trees for Pd, 46 trees for Pk, and 45 trees for Lk. The models were fitted to the total increment of tree size variables, diameter at breast height (DBH), height, basal area, and stem volume, as a function of age. After selecting the best-fit growth function, the current annual increment (CAI) and mean

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20

Akalusi, Matthew E., and Charles P. A. Bourque. "Physiological and Morphological Variation in Balsam Fir Provenances Growing in New Brunswick, Canada." Forests 12, no. 2 (2021): 186. http://dx.doi.org/10.3390/f12020186.

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There is a need to understand the physio-morphological responses of northern tree species to climate change. The hypothesis of the current study was that provenance and light intensity were both influential in the control of intrinsic water-use efficiency (iWUE). Diameter at breast height (DBH)-increment was hypothesized as being more affected by provenance. Intrinsic water-use efficiency (iWUE), the ratio of photosynthesis (A) to stomatal conductance (gs), was assessed in foliage under two levels of photosynthetically active radiation (PAR; i.e., 300 and 1200 μmol m−2 s−1) in 63-year-old bals

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21

Musana, Milka Elieza, Shaban Athuman Chamshama, Eliakimu Zahabu, and Wilson Mugasha. "Growth Performance and Carbon Sequestration potential of Planted Albizia versicolor and Albizia harveyi in Morogoro, Tanzania." East African Journal of Environment and Natural Resources 8, no. 1 (2025): 30–37. https://doi.org/10.37284/eajenr.8.1.2669.

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This study assessed the growth performance and Carbon sequestration potential of 21-year-old Albizia versicolor Welw ex. Oliver. (Av) and Albizia harveyi Fourn (Ah) planted in 2003 at Maseyu village, Morogoro, Tanzania. These species are among the species preferred for wood fuel in Tanzania and other countries within African savanna ecosystems. Seedlings of the two species were planted at a spacing of 2 x 2 m with 25 trees per plot (8 x 8 m) using a completely randomized block design with three replications. In 2024, measurements were taken for diameter at breast height (Dbh) and height. Data

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22

Woodall, C. W., C. E. Fiedler, and K. S. Milner. "Intertree competition in uneven-aged ponderosa pine stands." Canadian Journal of Forest Research 33, no. 9 (2003): 1719–26. http://dx.doi.org/10.1139/x03-096.

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Intertree competition indices and effects were examined in 14 uneven-aged ponderosa pine (Pinus ponderosa var. scopulorum Engelm.) stands in eastern Montana. Location, height, diameter at breast height (DBH), basal area increment, crown ratio, and sapwood area were determined for each tree (DBH >3.8 cm) on one stem-mapped plot (0.2-0.4 ha) in each sample stand. Based on tree locations, various competition indices were derived for each sample tree and correlated with its growth efficiency by diameter class. In addition, trends in individual tree attributes by diameter class and level of surr

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Cyr, Guillaume, and Nelson Thiffaul. "Long-term black spruce plantation growth and structure after release and juvenile cleaning: A 24-year study." Forestry Chronicle 85, no. 3 (2009): 417–26. http://dx.doi.org/10.5558/tfc85417-3.

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Vegetation management is crucial to meet growth and yield objectives in conifer plantations. But, the combined and longterm effects of mechanical release and juvenile cleaning on growth and stand structure have yet to be documented in black spruce plantations. A long-term study was carried out in Quebec (Canada) to evaluate the interactions between initial mechanical release at age 2 years and juvenile cleaning at age 14 years (i.e., a second release treatment) on planted black spruce survival and dimensions at age 24 years. Population structure and stand species composition were also assessed

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Felfili, Jeanine Maria. "Growth, recruitment and mortality in the Gama gallery forest in central Brazil over a six-year period (1985–1991)." Journal of Tropical Ecology 11, no. 1 (1995): 67–83. http://dx.doi.org/10.1017/s0266467400008415.

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ABSTRACTDiameter increments, recruitment and mortality were studied over a six-year period in a 3.02 ha sample in an area of 64 ha of undisturbed gallery forest alongside the Gama stream. The study site is located in Fazenda Água Limpa in Brasília, Federal District, Brazil. Trees ≥ 31 cm gbh (10 cm dbh) were measured every three years from 1985 in 151 (10 m × 20 m) permanent plots in Gama forest.The mean annual diameter increment for trees ≥ 10 cm dbh was 0.25 cm y-1. Variability was high with coefficients of variation c. 100% or more. Light-demanding and large upper storey species tended to g

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Lynch, Thomas B., and Michael M. Huebschmann. "Estimating diameter increment by DBH class with horizontal point sampling data." Forest Ecology and Management 51, no. 4 (1992): 285–99. http://dx.doi.org/10.1016/0378-1127(92)90329-8.

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Shrimpton, D. M., and A. J. Thomson. "Relationship between phloem thickness and lodgepole pine growth characteristics." Canadian Journal of Forest Research 15, no. 5 (1985): 1004–8. http://dx.doi.org/10.1139/x85-161.

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Depth of the phloem (inner bark) layers in lodgepole pine (Pinusconforta Dougl. var. latifolia Engelm.) is a factor in the development of outbreaks of the mountain pine beetle (Dendroctonusponderosae Hopk.). Five lodgepole pine stands in the interior of British Columbia spanning the ages affected by this beetle (47–147 years) were studied. Relationships were determined between thickness of the phloem layer and radial and area increments over various periods of time, as well as DBH. The thickness of the phloem layer declined over the age spanned in this study. The best predictor of phloem thick

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27

Korwar, G., G. Pratibha, and V. Ravi. "Influence of organic and inorganic sources of nutrients on growth of Leucaena (Leucaena leucocephala L.) and soil quality in semi arid tropics." Indian Journal of Forestry 32, no. 4 (2009): 513–16. http://dx.doi.org/10.54207/bsmps1000-2009-oc2g82.

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Studies were conducted at Central Research Institute for Dryland Agriculture (ICAR), Hyderabad during 2002-2004 to evaluate the effect of conjunctive use of organic and inorganic sources of nutrients on the growth and performance of Leucaena (Leucaena leucocephala), and soil properties. Plant height and diameter at breast height (DBH) of leucaena increased in all the treatments tested, the highest increment was observed with application of Vermicompost. Over a 30-months period, vermicompost recorded higher percent increment in plant height (35.7) and DBH (40.8) as compared to rest of the treat

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Li, Pi Jun, Aijier A. Bula, Wen Yue Wang, and Rui Qi Jia. "Improved Variety Populus Alba×Populus Bolleana and its Parents Growth Characteristic." Advanced Materials Research 853 (December 2013): 384–88. http://dx.doi.org/10.4028/www.scientific.net/amr.853.384.

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Studied on improved varieties and its parents growth characteristics. Discusses the Populus fine varieties Populus alba×Populus bolleana with its parents differences to promote varieties of Populus to provide a theoretical basis for Populus alba×Populus bolleana .The results showed:(1) Comparison of 3 varieties height accumulative increment consistent, individual difference were not significant. (2) 3 poplar varieties cumulative growth of DBH have difference, xinjiang Poplar DBH growth in the 2-8 years was slow , while the Populus alba Linn. and Populus alba×Populus bolleana continued to grow.

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Bauerová, Lucie, Petr Maděra, Martin Šenfeldr, and Hana Habrová. "Age Estimation of Dracaena cinnabari Balf. f. on Socotra Island: A Direct Method to Determine Its Lifespan." Forests 14, no. 4 (2023): 840. http://dx.doi.org/10.3390/f14040840.

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Background: Dracaena cinnabari is a monocot species that does not form annual tree rings; thus, its age can only be estimated. This species is threatened by low natural regeneration, with an evident absence of younger individuals most likely caused by overgrazing; therefore, knowing trees’ ages is important for possible conservation strategies; Methods: Data collection was conducted on the Firmihin Plateau on Socotra Island (Yemen) in 2021, and the diameter at breast height (DBH) of 1077 individuals was measured, the same as those established on monitoring plots 10 years before the current mea

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Muin, Abdurrani, Oktariana Rini Lestari, and Riene Suci Wulandari. "SELEKSI POHON PLUS PADA UJI KETURUNAN Shorea leprosulaDI KALIMANTAN TENGAH." Jurnal Pemuliaan Tanaman Hutan 15, no. 2 (2021): 137–44. http://dx.doi.org/10.20886/jpth.2021.15.2.137-144.

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he progeny trial of Shorea leprosula was established in Central Kalimantan under the IUPHHK-HA management of PT. Erna Djuliawati by planting 30 families to examine the genetic superiority of trees asplywood raw material. The trial was laid-out using 8 blocks, 4 tree-plots and a spacing of 6 x 3 m. The aim of the study was to practice the plus trees selection in the progeny trial. The study was conducted using a survey method on phenotypically superior trees based on a diameter at breast height (dbh) baseline of ≥ 30 cm. The data collected and analyzed for the plus trees and comparison trees we

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Carvalho, João Olegário Pereira de, José Natalino Macedo Silva, and José do Carmo Alves Lopes. "Growth rate of a terra firme rain forest in Brazilian Amazonia over an eight-year period in response to logging." Acta Amazonica 34, no. 2 (2004): 209–17. http://dx.doi.org/10.1590/s0044-59672004000200009.

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This paper deals with growth rates of trees > 5cm dbh over an eight-year period from 257 species at the Tapajós National Forest. The discussion is centred on the behaviour of the forest after logging. Permanent sample plots were established in 1981 and measured at the first time. The area was logged in 1982. Measurements after logging occurred in 1983, 1987 and 1989. Considering all species together, diameter increment was similar for both intensities of logging until five years after logging. Light-demanding species showed significantly higher growth rates than shade-tolerant species in th

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Doak, Patricia. "The impact of tree and stand characteristics on spruce beetle (Coleoptera: Scolytidae) induced mortality of white spruce in the Copper River Basin, Alaska." Canadian Journal of Forest Research 34, no. 4 (2004): 810–16. http://dx.doi.org/10.1139/x03-256.

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I examined the relationships between individual and stand-level characteristics of white spruce, Picea glauca (Moench) Voss, and the incidence of spruce beetle, Dendroctonus rufipennis Kirby, induced mortality. The study region, in the Kennicott Valley of the Copper River Basin, Alaska, has contained an active spruce beetle epidemic since 1989. I investigated the relationship among the individual traits of host age, size (diameter at breast height, DBH), and growth rate (basal area increment, BAI) and mortality from the spruce beetle. I also examined the effects of stand density, mean DBH, and

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Sano, Haruka, Naoko Miura, Minoru Inamori, et al. "Quantitative Genetic Aspects of Accuracy of Tree Biomass Measurement Using LiDAR." Remote Sensing 16, no. 24 (2024): 4790. https://doi.org/10.3390/rs16244790.

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The growing focus on the role of forests in carbon sequestration highlights the importance of accurately and efficiently measuring biophysical traits, such as diameter at breast height (DBH) and tree height. Understanding genetic contributions to trait variation is crucial for enhancing carbon storage through the genetic improvement of forest trees. Light detection and ranging (LiDAR) has been used to estimate DBH and tree height; however, few studies have explored the heritability of these traits or assessed the accuracy of biomass increment selection based on them. Therefore, this study aime

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Di Cosmo, Lucio, Diego Giuliani, Maria Michela Dickson, and Patrizia Gasparini. "An individual-tree linear mixed-effects model for predicting the basal area increment of major forest species in Southern Europe." Forest Systems 29, no. 3 (2020): e019. http://dx.doi.org/10.5424/fs/2020293-15500.

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Aims of the study. Assessment of growth is essential to support sustainability of forest management and forest policies. The objective of the study was to develop a species-specific model to predict the annual increment of tree basal area through variables recorded by forest surveys, to assess forest growth directly or in the context of more complex forest growth and yield simulation models.Area of the study. Italy.Material and methods. Data on 34638 trees of 31 different forest species collected in 5162 plots of the Italian National Forest Inventory were used; the data were recorded between 2

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Borkowski, A. "Spatial distribution of losses in growth of trees caused by the feeding of pine shoot beetles Tomicus piniperda and T. minor (Col., Scolytidae) in Scots pine stands growing within range of the influence of a timber yard in southern Poland." Journal of Forest Science 52, No. 3 (2012): 130–35. http://dx.doi.org/10.17221/4494-jfs.

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This study deals with the assessment of increment losses in Scots pine trees caused by the maturation feeding of pine shoot beetles Tomicus piniperda (L.) and T. minor (Hart.) (Col., Scolytidae) in even-aged stands growing during their entire life span within range of the influence of a sawmill and its timber yard. In spring 2004, on three sample plots, 0.2 ha in size, situated 60, 200, and 500 m from the yard, height and dbh of all trees were measured and increment cores were taken from randomly selected sample trees. An agreement between the spatial distribution of losses in tree increments

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Pothier, David. "Développement de sapinières éclaircies exposées à une épidémie de tordeuse des bourgeons de l'épinette." Forestry Chronicle 74, no. 1 (1998): 91–99. http://dx.doi.org/10.5558/tfc74091-1.

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In 1968, three intensities of low thinning were applied in 33-year-old balsam fir (Abies balsamea [L.] Mill.) stands of eastern Québec in order to remove 0, 20 and 30% of the total basal area. Sample plots were located in two distinct areas, one of which was annually sprayed with insecticides between 1978 and 1982 while the other was never protected against a spruce budworm (Choristoneura fumiferana [Clem.]) outbreak that occurred between 1976 and 1983. A total of 32 0.04-ha sample plots were periodically measured between 1968 and 1994. Low thinnings mostly removed non merchantable trees (DBH

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Araujo, Marcio José de, David John Lee, Evandro Vagner Tambarussi, Rinaldo Cesar de Paula, and Paulo Henrique Müller da Silva. "Initial productivity and genetic parameters of three Corymbia species in Brazil: designing a breeding strategy." Canadian Journal of Forest Research 51, no. 1 (2021): 25–30. http://dx.doi.org/10.1139/cjfr-2019-0438.

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The survival, initial productivity, and the genetic parameters of Corymbia citriodora subsp. citriodora (CCC), Corymbia citriodora subsp. variegata (CCV), and Corymbia torelliana (CT) were used to develop a breeding strategy for the Corymbia species. Survival, height, and diameter at breast height (DBH) data were assessed 24 and 36 months after planting, and the mean annual volume increment was estimated in three trials. Longitudinal DBH data analysis was applied individually to each trial to identify the best and the poorest families at both ages. The mortality ranged from 5% in CT to 27% in

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Roik, Mailson, Afonso Figueiredo Filho, Andrea Nogueira Dias, et al. "Dynamics of a Mixed Ombrophilous Forest Fragment Located in the Irati National Forest, Parana." TreeDimensional 14, no. 45 (2025): 1–19. https://doi.org/10.55746/treed.2025.03.045.

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The present study aimed to evaluate the processes governing forest dynamics in a fragment of Mixed Ombrophilous Forest located in the Irati National Forest, Parana. For this purpose, growth, recruitment, and mortality were described at the botanical family, species, and ecological group levels, based on data from a Continuous Forest Inventory conducted over nine years. Data from 25 permanent one-hectare plots (100 m × 100 m) were used. All individuals with a diameter at breast height greater than or equal to 10 cm (DBH 10 cm) were properly identified and measured in the years 2002, 2005, 2008,

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Russell, Matthew B., Aaron R. Weiskittel, and John A. Kershaw. "Assessing model performance in forecasting long-term individual tree diameter versus basal area increment for the primary Acadian tree species." Canadian Journal of Forest Research 41, no. 12 (2011): 2267–75. http://dx.doi.org/10.1139/x11-139.

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Tree basal area (ba) or diameter at breast height (dbh) are universally used to represent tree secondary growth in individual tree based growth models. However, the long-term implications of using either ba or dbh for predictions are rarely fully assessed. In this analysis, Δba and Δdbh increment equations were fit to identical datasets gathered from six conifer and four hardwood species grown in central Maine. The performance of Δba and Δdbh predictions from nonlinear mixed-effects models were then compared with observed growth measurements of up to 29 years via a Monte Carlo simulation. Two

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Cruz, Evanil Almeida, and Ronaldo Drescher. "Incrementos em função da idade de <i>Qualea dinizii </i>Ducke na Floresta Amazônica, Noroeste de Mato Grosso, Brasil." FLOVET - Boletim do Grupo de Pesquisa da Flora, Vegetação e Etnobotânica 3, no. 14 (2025): e2025003. https://doi.org/10.59621/flovet.2025.v3.n14.e2025003.

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Although many studies have explored the growth rate of Amazonian natural forest species in forest stands, there is still a need to investigate the increment and describe the growth rate as a function of age for species at the level of individual trees. The aim of this study was to estimate the average accumulated increment over the years for the species Qualea dinizii Ducke. The database consisted of five trees from a natural forest. The dendrometric variables (Cap, Dap, Ht) were measured for each tree. The study was conducted using the ANATRO methodology. This study confirmed the periodicity

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Hayatgheibi, Haleh, Anders Fries, Johan Kroon, and Harry X. Wu. "Genetic analysis of fiber-dimension traits and combined selection for simultaneous improvement of growth and stiffness in lodgepole pine (Pinus contorta)." Canadian Journal of Forest Research 49, no. 5 (2019): 500–509. http://dx.doi.org/10.1139/cjfr-2018-0445.

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Quantitative genetic variation of fiber-dimension traits and their relationship with diameter at breast height (DBH) and solid-wood traits (i.e., density and modulus of elasticity (MOE)) was investigated in lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.). A total of 823 increment cores were sampled from 207 half-sib families at two independent progeny trials, aged 34–35 years, located in northern Sweden. High-resolution pith-to-bark profiles were obtained for radial fiber width (RFW), tangential fiber width (TFW), fiber wall thickness (FWT), and fiber coarseness (FC) usi

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Gheorghe, Marin, and Bogdan M. Strimbu. "Impact of Climate on the Growth and Yield of the Main Tree Species from Romania Using Dendrochronological Data." Plants 14, no. 8 (2025): 1234. https://doi.org/10.3390/plants14081234.

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National Forest Inventories (NFIs) offer a comprehensive and consistent dataset for forest analysis, enabling the refinement of growth and yield models by integrating regional environmental factors. This study investigates the influence of climate on the growth of three dominant tree species in Romania: Norway spruce (Picea abies L. Karst), European beech (Fagus sylvatica L.), and Sessile oak (Quercus petraea (Matt.) Liebl). Increment core analysis revealed a general increase in diameter growth since 1960, partially correlated with temperature trends. Repeated measures analysis confirmed signi

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Short III, E. Austin, and Harold E. Burkhart. "Predicting Crown-Height Increment for Thinned and Unthinned Loblolly Pine Plantations." Forest Science 38, no. 3 (1992): 594–610. http://dx.doi.org/10.1093/forestscience/38.3.594.

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Abstract Several nonlinear, individual tree crown-height increment equations were tested for their ability to predict annual crown-height increment in thinned and unthinned loblolly pine plantations. The selected model contained tree height (HT), tree crown ratio (CR) raised to the one-half power, age (A), and a measure of competition. The distance-dependent and the distance-independent models were the same form; however, the competition index (CI) in the distance-dependent model was replaced by the ratio of quadratic mean diameter to tree dbh (DR) for the distance-independent model. The indiv

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Krasowski, Marek J., and Jian R. Wang. "Aboveground growth responses of understory Abies lasiocarpa saplings to different release cuts." Canadian Journal of Forest Research 33, no. 9 (2003): 1593–601. http://dx.doi.org/10.1139/x03-074.

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A white birch (Betula papyrifera Marsh.) overstory of a 30+ year old stand was thinned or completely removed, releasing an advance regeneration of subalpine fir (Abies lasiocarpa (Hook.) Nutt.). The overstory was clear-cut (T0), thinned to 600 (T600) or to 1200 (T1200) stems/ha, or left uncut (control). Three years after release, understory responses were best demonstrated by decreasing specific leaf area with increasing release level and by changes to height and radial growth increments. Clear-cutting the overstory stalled the height growth in fir for two seasons and radial growth at the tree

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Raj, Anup, R. Sehgal, and Punam Sharma. "Genetic Parameters and Gain Estimates for Growth Traits in Chir Pine (Pinus Roxburghii Sarg.) in a 22 Years Old Half-Sib Progeny Test." Indian Journal of Forestry 35, no. 2 (2012): 143–50. http://dx.doi.org/10.54207/bsmps1000-2016-nej2wr.

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Twenty two year old half-sib progenies of 58 plus trees of Chir pine (Pinus roxburghii Sarg.) grown in a progeny test at Solan, Himachal Pradesh, India, were evaluated. The estimated test mean for tree height and dbh was 12.43 m and 21.37 cm with current annual increment 0.93 m and 1.31 cm, respectively. Family mean for tree height varied from 8.04 m to 16.08 m and for dbh from 14.56 cm to 27.23 cm. The family differences were highly significant (P<0.001). Tree-to-tree variance within plot (σ²w) was the major contributor (more than 78%) towards the total phenotypic variance for all the grow

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Šēnhofa, Silva, Mārtiņš Zeps, Arnis Gailis, Rolands Kāpostiņš, and Āris Jansons. "Development of stem cracks in young hybrid aspen plantations." Forestry Studies 65, no. 1 (2016): 16–23. http://dx.doi.org/10.1515/fsmu-2016-0008.

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Abstract Cracks expose wood to fungal infections that significantly affects wood quality, while rapid wound occlusion decreases probability of infections. Assessment of scars was done at four grade scale in three adjacent hybrid aspen trials at the age of 8-10 years in central part of Latvia three years after bark crack occurrence. Occluded wounds were found for 95% of damaged trees, regardless of tree age. Among trees that had cracks wider than 1 cm, 42% had uniformly healed bark, but 7% still had open wounds. Wound development was significantly affected by crack width and length (both p <

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Puri, L., H. Meilby, S. Rayamajhi, et al. "Growth and volume based on permanent sample plots in forests managed by communities." Banko Janakari 22, no. 2 (2013): 11–18. http://dx.doi.org/10.3126/banko.v22i2.9194.

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In order to monitor the woody biomass yield 241 permanent sample plots wereestablished in four forests (total 2017 ha) across three physiographic regionsof Nepal. Tree species identification, tree positioning and diameter at breastheight (DBH) for all trees and height for a sample of trees were measured in2005 and 2010. Results presented are density and volume by forest, speciesand diameter class in 2010 and the species-wise increment between 2005and 2010 by forest. Standing volumes were between 134 and 311 m3ha-1, andannual volume increment was 2.5-7.6 m3ha-1. These plots may be utilized forf

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Haryani, Rosli Rosaizan, and Gang Kang Xin. "Diameter Growth Studies of Dipterocarp Hill Forest in Selangor Forest Reserves, Malaysia." International Journal of Sciences Volume 2, no. 2013-06 (2013): 18–23. https://doi.org/10.5281/zenodo.3348236.

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A growth study is important in the management of hill dipterocarp forest in Malaysia. The future of role in management of hill dipterocarp forest was depending on how well the remaining available resource is managed today. In order to achieve sustainability of forest management and to better understanding of forest stand and behavior, accurate growth data were important to outline the management strategies. Specific information on the behavior of particular forest stands pertaining to growth performance, mortality, density, structure and species composition is urgently required to evaluate the

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Hawkins, Ch D. B., and A. Dhar. "Birch (Betula papyrifera) × white spruce (Picea glauca) interactions in mixedwood stands: implications for management." Journal of Forest Science 59, No. 4 (2013): 137–49. http://dx.doi.org/10.17221/2/2013-jfs.

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Current British Columbia forest regulations drive the regeneration management towards pure conifer stands rather than remaining in a mixed-species condition. This approach may result in unnecessary vegetation control. The main objective of this investigation was to study the impact of variable paper birch densities on white spruce growth in 15&ndash;20 years old stands for management implications. Regression analysis was used to examine the effect of birch density and two competition indices to predict spruce growth. A mixed model ANOVA showed that spruce mean annual DBH and basal area inc

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Wongprom, Jetsada, Somporn Maelim, Wasan Chandaeng, Sakhan Teejuntuk, Monthathip Sommeechai, and Decha Duangnamon. "EFFECT OF THINNING ON GROWTH AND WOOD PRODUCTION OF NATURALLY REGENERATED 8-YEAR-OLD ACACIA MANGIUM WILLD. PLANTATION ON ABANDONED MINING AREA, SOUTHERN THAILAND." BIOTROPIA 30, no. 3 (2023): 308–17. http://dx.doi.org/10.11598/btb.2023.30.3.1919.

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Thinning is an important practice for promoting growth and maintaining forest plantation for wood production from the remaining trees. In this study, thinning was carried out in a naturally regenerated 8-year-old Acacia mangium plot in the Phangnga Forestry Research Station. Three thinning schemes, with 175 (T1), 300 (T2) and 600 (T3) remaining trees/ha, were compared with the control (no thinning) of 831 trees/ha. The diameter at breast height (DBH) and height (H) of the trees were measured. The differences in growth, current annual increment (CAI), aboveground biomass, and stem volume (V) we

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