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Journal articles on the topic 'Height-diameter models'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Nanos, Nikos, Rafael Calama, Gregorio Montero, and Luis Gil. "Geostatistical prediction of height/diameter models." Forest Ecology and Management 195, no. 1-2 (2004): 221–35. http://dx.doi.org/10.1016/j.foreco.2004.02.031.

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2

Ahmadi, K., and Alavi SJ. "Generalized height-diameter models for Fagus orientalis Lipsky in Hyrcanian forest, Iran." Journal of Forest Science 62, No. 9 (2016): 413–21. http://dx.doi.org/10.17221/51/2016-jfs.

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3

Mehtätalo, Lauri, Sergio de-Miguel, and Timothy G. Gregoire. "Modeling height-diameter curves for prediction." Canadian Journal of Forest Research 45, no. 7 (2015): 826–37. http://dx.doi.org/10.1139/cjfr-2015-0054.

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Individual tree heights are needed in many situations, including estimation of tree volume, dominant height, and simulation of tree growth. However, height measurements are tedious compared to tree diameter measurements, and therefore height–diameter (H–D) models are commonly used for prediction of tree height. Previous studies have fitted H–D models using approaches that include plot-specific predictors in the models and those that do not include them. In both these approaches, aggregation of the observations to sample plots has usually been taken into account through random effects, but this

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4

Khadka, A., T. Subedi, M. Ghimire, B. P. Dhakal, and H. Parikka. "Diameter-height models for the Terai tree species." Banko Janakari 25, no. 1 (2015): 50–54. http://dx.doi.org/10.3126/banko.v25i1.13471.

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Tree diameter-height relationship can be used as a key input component in forest growth and yield models, and description of stand dynamics. Various models of stem diameter and height relation were developed. Those were formulated and implemented during Terai forest inventory data calculations in the Forest Resource Assessment (FRA) Nepal Project. The field inventory was conducted from December, 2010 to March, 2011. The Concentric Circular Sample Plot was designed where the diameters at breast height of all the tallied trees and the heights of the sampled trees were measured. The data were han

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5

Jeelani, M. Iqbal, Manish Kr Sharma, Anil Bhat, and Mansha Gul. "Validation of two parameter function height diameter models." INTERNATIONAL RESEARCH JOURNAL OF AGRICULTURAL ECONOMICS AND STATISTICS 9, no. 2 (2018): 331–34. http://dx.doi.org/10.15740/has/irjaes/9.2/331-334.

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6

Meng, Qingmin, Chris J. Cieszewski, Mike R. Strub, and Bruce E. Borders. "Spatial regression modeling of tree height–diameter relationships." Canadian Journal of Forest Research 39, no. 12 (2009): 2283–93. http://dx.doi.org/10.1139/x09-136.

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Tree height–diameter relationships are usually studied using linear or nonlinear models, but exogenous variables, especially spatially autocorrelated and dependent variables of tree diameter or height, are not often considered in height–diameter modeling. Three types of spatial regression models — spatial lag model, spatial error model, and spatial Durbin process model — are explored in this study. The height–diameter relationships are modeled using the spatial regression models to investigate the effects of spatial dependence and spatial autocorrelation and the roles of the exogenous variable

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7

Zhang, Xiongqing, Aiguo Duan, Jianguo Zhang, and Congwei Xiang. "Estimating Tree Height-Diameter Models with the Bayesian Method." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/683691.

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Six candidate height-diameter models were used to analyze the height-diameter relationships. The common methods for estimating the height-diameter models have taken the classical (frequentist) approach based on the frequency interpretation of probability, for example, the nonlinear least squares method (NLS) and the maximum likelihood method (ML). The Bayesian method has an exclusive advantage compared with classical method that the parameters to be estimated are regarded as random variables. In this study, the classical and Bayesian methods were used to estimate six height-diameter models, re

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8

Ferraz Filho, Antonio Carlos, Blas Mola-Yudego, Andressa Ribeiro, José Roberto Soares Scolforo, Rodolfo Araújo Loos, and Henrique Ferraço Scolforo. "HEIGHT-DIAMETER MODELS FOR Eucalyptus sp. PLANTATIONS IN BRAZIL." CERNE 24, no. 1 (2018): 9–17. http://dx.doi.org/10.1590/01047760201824012466.

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9

INADA, Mitsuo. "The lognormal distribution models for diameter and height distributions." Japanese Journal of Forest Planning 19 (1992): 43–60. http://dx.doi.org/10.20659/jjfp.19.0_43.

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10

Indrajaya, Yonky, Mohamad Siarudin, Muhammad Abdul Qirom, et al. "Nonlinear Height-Diameter Models for Anthocephalus macrophyllus in Indonesia." International Journal of Design & Nature and Ecodynamics 19, no. 4 (2024): 1099–108. http://dx.doi.org/10.18280/ijdne.190401.

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11

Sharma, Mahadev, and Shu Yin Zhang. "Height–Diameter Models Using Stand Characteristics forPinus banksianaandPicea mariana." Scandinavian Journal of Forest Research 19, no. 5 (2004): 442–51. http://dx.doi.org/10.1080/02827580410030163.

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12

Lebedev, Aleksandr. "Verification of two- and three-parameter simple height-diameter models for birch in the European part of Russia." Journal of Forest Science 66, No. 9 (2020): 375–82. http://dx.doi.org/10.17221/76/2020-jfs.

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The accuracy of determining the height of trees is essential both in forestry and in scientific research. Height is usually determined using specific models, where it is a function of the diameter at breast height. On the materials of 23 sample plots with the measurement of model trees in birch stands, the parameters were determined for 29 two-parameter and three-parameter models that are most often found in literary sources. The following metrics evaluated the quality of the models: root mean square error, mean absolute percentage error, coefficient of determination, adjusted coefficient of d

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13

Rupšys, Petras. "Generalized fixed-effects and mixed-effects parameters height–diameter models with diffusion processes." International Journal of Biomathematics 08, no. 05 (2015): 1550060. http://dx.doi.org/10.1142/s1793524515500606.

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Statistical models using stochastic differential equations (SDEs) to describe dynamically evolving natural systems are appearing in the scientific literature with some regularity in recent years. In this study, the SDE mixed-effects parameter models based on a Vasicek non-homogeneous diffusion process are formulated. The breast height diameter-dependent drift function additionally depends on deterministic function that describes the dynamic of certain exogenous stand variables (crown height, c h , crown width, c w , mean breast height diameter, d0, mean height, h0, age, A, soil fertility index

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14

da Silva, B. G., C. G. B. Demétrio, R. A. Sermarini, et al. "Height-diameter models: a comprehensive review with new insights on relationships to generalized linear models and differential equations." International Forestry Review 26, no. 4 (2024): 398–419. https://doi.org/10.1505/146554824839334687.

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Forest scientists use regression models widely, particularly for height-diameter modeling. These models offer several benefits for estimating height in homogeneous or non-homogeneous stands. The original models for height estimation based on diameter at breast height have been extended to include other variables, thanks to technological advancements. The purpose of this article is to provide a literature review using the methodology outlined by Cervo and Bervian (2011), providing helpful information to forest biometricians in selecting a height-diameter model that utilizes historical data. The

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15

Wang, Mingliang, Anoop Upadhyay, and Lianjun Zhang. "Trivariate Distribution Modeling of Tree Diameter, Height, and Volume." Forest Science 56, no. 3 (2010): 290–300. http://dx.doi.org/10.1093/forestscience/56.3.290.

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Abstract Trivariate distribution models were constructed for tree diameter (D), height (H), and volume (V) using a normal copula (a mathematical function that joins or links marginal distribution functions to form multivariate distribution functions). The model parameters were estimated by a two-stage semiparametric method as follows: univariate distribution models were fitted separately for each tree variable, and then the copula dependency (correlation) parameters were independently estimated using empirical distribution functions to approximate the marginal models. Our results indicated tha

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16

Thapa, TB, CP Upadhyaya, YP Timilsina, SK Bhandari, and L. Puri. "Predicting Total Height from Diameter Using Nonlinear Models in Pinus roxburghii." Nepal Journal of Science and Technology 14, no. 1 (2013): 147–52. http://dx.doi.org/10.3126/njst.v14i1.8935.

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Height of the trees is not only used to estimate the product available from trees and to determine the productive capacity of the particular land but also used in forest management and research activities. In this research, predictability of total height from diameter at breast height for chir-pine (Pinus roxburghii) by using nonlinear models was examined. Total height and diameter at breast height of 180 trees were measured by using Suunto Clinometer and diameter tape respectively. The measured data were subjected to previously developed robust and strong statistical models, and evaluated by

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17

Andrasev, Sinisa, Milivoj Vuckovic, Savo Roncevic, and Martin Bobinac. "Growth models of black poplar trees, section Aigeiros (Duby)." Bulletin of the Faculty of Forestry, no. 94 (2006): 83–92. http://dx.doi.org/10.2298/gsf0694083a.

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Different courses of tree growth in height and diameter in nursery and plantation, immediately after transplanting, cause the difficulties in adaptation of tree growth models. Tree growth models, which do not include the sudden transitions and specificities of nursery growth and in the first years after planting can show errors in the assessment of the values of current and average increment at the moment of culmination and at the age of maximum increment. This paper proposes the introduction of additional parameters in the models of diameter and height growth, e.g. the values of mean diameter

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18

Huang, Shongming. "Ecoregion-Based Individual Tree Height-Diameter Models for Lodgepole Pine in Alberta." Western Journal of Applied Forestry 14, no. 4 (1999): 186–93. http://dx.doi.org/10.1093/wjaf/14.4.186.

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Abstract Using the felled tree data, ecoregion-based height-diameter models were developed for lodgepole pine (Pinus contorta var. latifolia) in Alberta. A large number of height-diameter functions were evaluated, and the Chapman-Richards function was found to produce some of the most satisfactory fits. Residual analysis was conducted to identify the error structure of the models. A weighting factor of wi = 1/Di was found appropriate for achieving the equal error variance assumption. Differences of the height-diameter models among different ecoregions were examined and tested using the nonline

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19

Dubenok, N. N., A. V. Lebedev, V. V. Gostev, A. V. Gemonov, and V. M. Gradusov. "Height-Diameter fixed effects models for the pine in European Russia." IOP Conference Series: Earth and Environmental Science 1154, no. 1 (2023): 012025. http://dx.doi.org/10.1088/1755-1315/1154/1/012025.

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Abstract The purpose of the study is to select and justify a regression model that will most accurately reflect the dependence of heights on the diameters at breast height of pine plantations in the European part of Russia. 28 height-diameter models were selected based on literary sources and tested for research. Näslund’s equation is justified as the best model for the relationship between height and diameter at chest height. It can be applied in practice when performing forestry and research work in pine forests of the European part of Russia.

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20

Monti, Cassio Augusto Ussi, Rafael Menali Oliveira, Joseph Peter Roise, Henrique Ferraço Scolforo, and Lucas Rezende Gomide. "Hybrid Method for Fitting Nonlinear Height–Diameter Functions." Forests 13, no. 11 (2022): 1783. http://dx.doi.org/10.3390/f13111783.

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Regression analysis is widely applied in many fields of science to estimate important variables. In general, nonlinear regression is a complex optimization problem and presents intrinsic difficulties in estimating reliable parameters. Nonlinear optimization algorithms commonly require a precise initial estimate to return reasonable estimates. In this work, we introduce a new hybrid algorithm based on the association of a genetic algorithm with the Levenberg–Marquardt method (GALM) to adjust biological nonlinear models without knowledge of initial parameter estimates. The proposed hybrid algori

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21

Wang, Mingliang, and Keith Rennolls. "Bivariate Distribution Modeling with Tree Diameter and Height Data." Forest Science 53, no. 1 (2007): 16–24. http://dx.doi.org/10.1093/forestscience/53.1.16.

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Abstract The Logit-Logistic (LL), Johnson's SB, and the Beta (GBD) are flexible four-parameter probability distribution models in terms of the (skewness-kurtosis) region covered, and each has been used for modeling tree diameter distributions in forest stands. This article compares bivariate forms of these models in terms of their adequacy in representing empirical diameter–height distributions from 102 sample plots. Four bivariate models are compared: SBB, the natural, well-known, and much-used bivariate generalization of SB; the bivariate distributions with LL, SB, and Beta as marginals, con

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22

Sánchez-González, M., I. Cañellas, and G. Montero. "Generalized height-diameter and crown diameter prediction models for cork oak forests in Spain." Investigación Agraria: Sistemas y Recursos Forestales 16, no. 1 (2007): 76. http://dx.doi.org/10.5424/srf/2007161-00999.

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23

Suliman, Tammam. "Generalized Height-Diameter Models for Pinus brutia stands in Syria." International Journal of Agriculture & Environmental Science 8, no. 1 (2021): 53–60. http://dx.doi.org/10.14445/23942568/ijaes-v8i1p109.

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24

Lu, Junfeng, and Lianjun Zhang. "Geographically Local Linear Mixed Models for Tree Height-Diameter Relationship." Forest Science 58, no. 1 (2012): 75–84. http://dx.doi.org/10.5849/forsci.09-123.

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25

Wensel, Lee C., Walter J. Meerschaert, and Greg S. Biging. "Tree height and diameter growth models for Northern California conifers." Hilgardia 55, no. 8 (1987): 1–20. http://dx.doi.org/10.3733/hilg.v55n08p020.

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26

Hernandez Ramos, Jonathan, J. Jesús García Magaña, Adrián Hernández Ramos, et al. "Allometric height-diameter equations for Pinus pseudostrobus Lindl." Ecosistemas y Recursos Agropecuarios 5, no. 13 (2018): 15. http://dx.doi.org/10.19136/era.a5n13.1131.

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Silvicultural practices used for forest management in the Indigenous Community of Nuevo San Juan Parangaricutiro (CINSJP for its initials in Spanish), Michoacan, Mexico, are important for the sustainability of its woodlands. For this purpose, techniques that provide reliable and current quantitative estimates are required. The aim was to t an equation that describes the allometric relationship between total height and normal diameter (Th-nd) of Pinus pseudostrobus in the CINJSP forests. Data were obtained from P. pseudostrobus stands that have been managed with the Silvicultural Development Me

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27

Chenge, I. B., B. Iover, and D. H. Japheth. "Modelling Tree Height-Diameter Relationship in a Mixed Forest Plantation." Asian Journal of Research in Agriculture and Forestry 9, no. 3 (2023): 154–63. http://dx.doi.org/10.9734/ajraf/2023/v9i3218.

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The diameters and heights of the trees are two of the most important measurements in a forest inventory for biomass estimation and sustainable management. Measuring tree height in a forest stand is time consuming and costly, it is necessary to develop models that accurately estimate tree heights from easily measured variables (tree diameter). This study aims to develop models for estimating tree height in a forest plantation located in North-central, Nigeria. The systematic sampling method was used to twenty-one 0.09 ha sample plots in study area. Data on tree height and diameter were collecte

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28

Baia, Aldine Luiza Pereira, Henrique E. M. Nascimento, Marcelino Guedes, Renato Hilário, and José Julio Toledo. "Tree height-diameter allometry and implications for biomass estimates in Northeastern Amazonian forests." PeerJ 13 (March 11, 2025): e18974. https://doi.org/10.7717/peerj.18974.

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The relationship between tree height and diameter varies across forest types, introducing uncertainties in height that can affect aboveground biomass estimates in tropical forests. Here, we used a four-step approach to assess whether incorporating height estimates from local height-diameter models, compared to two published equations, improves biomass estimates across spatial scales. First, we measured the diameter and height of 1,962 trees in two representative forest types in the Northeastern Amazon: non-flooded terra-firme and seasonally-flooded várzea forests. Second, we selected the best

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29

Müller, Marcelo Dias, Thiago Taglialegna Salles, Domingos Sávio Campos Paciullo, Alexandre Magno Brighenti, and Carlos Renato Tavares de Castro. "EQUAÇÕES DE ALTURA, VOLUME E AFILAMENTO PARA EUCALIPTO E ACÁCIA ESTABELECIDOS EM SISTEMA SILVIPASTORIL." FLORESTA 44, no. 3 (2014): 473. http://dx.doi.org/10.5380/rf.v44i3.33149.

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O objetivo deste trabalho foi selecionar modelos alométricos para estimativa de altura, volume e afilamento do tronco de duas espécies florestais estabelecidas em um sistema silvipastoril com 10 anos de idade. Para a variável volume, foram testados modelos de simples e dupla entrada e para o afilamento do tronco foram testados modelos segmentados e não segmentados. Para estimativa da altura das árvores de eucalipto, foi selecionado o modelo semilogarítmico e para a acácia o modelo de melhor desempenho foi o exponencial. Entre os modelos volumétricos, aqueles de dupla entrada apresentaram melho

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30

BARBOSA, Reinaldo Imbrozio, Perla Natalia RAMÍREZ-NARVÁEZ, Philip Martin FEARNSIDE, Carlos Darwin Angulo VILLACORTA, and Lidiany Camila da Silva CARVALHO. "Allometric models to estimate tree height in northern Amazonian ecotone forests." Acta Amazonica 49, no. 2 (2019): 81–90. http://dx.doi.org/10.1590/1809-4392201801642.

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ABSTRACT Allometric models defining the relationship between stem diameter and total tree height in the Amazon basin are important because they refine the estimates of tree carbon stocks and flow in the region. This study tests different allometric models to estimate the total tree height from the stem diameter in an ecotone zone between ombrophilous and seasonal forests in the Brazilian state of Roraima, in northern Amazonia. Stem diameter and total height were measured directly in 65 recently fallen trees (live or dead). Linear and nonlinear regressions were tested to represent the D:H relat

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31

Adermann, Veiko, and Margus Pihlak. "Using copulas for modeling the dependence between tree height and diameter at breast height." Acta et Commentationes Universitatis Tartuensis de Mathematica 9 (December 31, 2005): 77–85. http://dx.doi.org/10.12697/acutm.2005.09.09.

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In the paper the relation between height and diameter at breast height of a tree is modeled by means of copulas. For this modeling the marginal distributions of tree height and diameter at breast height are estimated and thereafter the multivariate joint distribution function is approximated with copulas. Several Archimedean copulas and the Gaussian copula are used in modeling of the bivariate distribution of the interest. Different obtained models are compared.

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32

Filipescu, Cosmin N., Arthur Groot, Dan A. MacIsaac, Mike G. Cruickshank, and James D. Stewart. "Prediction of Diameter Using Height and Crown Attributes: A Case Study." Western Journal of Applied Forestry 27, no. 1 (2012): 30–35. http://dx.doi.org/10.1093/wjaf/27.1.30.

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Abstract Recent advances in remote sensing provide increasingly detailed forest information in a timely and cost-effective manner. Individual tree stem diameter, an important variable for operational forest inventory, cannot be determined directly from remotely sensed data; stem diameter must be estimated from ancillary measures of tree crown, tree height, and/or measures related to stand structure. In this study, we developed predictive models of diameter as a function of height and crown attributes using a nonlinear mixed-effects approach. Long-term silvicultural experiments provided data fo

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33

Peng, Changhui, Lianjun Zhang, Xiaolu Zhou, Qinglai Dang, and Shongming Huang. "Developing and Evaluating Tree Height-Diameter Models at Three Geographic Scales for Black Spruce in Ontario." Northern Journal of Applied Forestry 21, no. 2 (2004): 83–92. http://dx.doi.org/10.1093/njaf/21.2.83.

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Abstract A total of 11,612 black spruce trees were measured from permanent sample plots across the boreal and central regions of Ontario and were used to fit the well-known Chapman-Richards growth model at provincial, regional, and ecoregional scales. The results suggest that the height-diameter relationships of black spruce vary with different geographic regions and scales. There were significant variations in height-diameter relationships for black spruce between boreal and central regions as well as among some of the seven ecoregions. The ecoregion-based height-diameter models presented her

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34

Nunifu, Thompson K. "Compatible diameter and height increment models for lodgepole pine, trembling aspen, and white spruce." Canadian Journal of Forest Research 39, no. 1 (2009): 180–92. http://dx.doi.org/10.1139/x08-168.

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In this study, compatible height and diameter increment models were fitted for lodgepole pine ( Pinus contorta Dougl. ex Loud. var. latifolia Engelm.), trembling aspen ( Populus tremuloides Michx.), and white spruce ( Picea glauca (Moench) Voss), using the relationship between diameter and height growth. It was assumed that tree diameter increment is directly proportional to height increment, and the proportionality constant is a function of competition and site productivity. The results showed that the fit statistics are comparable with results of other studies, with adjusted R2 ranging from

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35

Haastrup, N. O., O. W. Bolaji, T. A. Narudeen, et al. "Description and Composition of Tree Species in a Tertiary Institution Agricultural Faculty Arboretum, Ibadan, South-West Nigeria." Journal of Applied Sciences and Environmental Management 26, no. 6 (2022): 1163–72. http://dx.doi.org/10.4314/jasem.v26i6.25.

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The Arboretum of the Agricultural Faculty of a tertiary institution in Ibadan is known for its rich diversity of trees. Therefore, the study investigates the tree growth variables in the arboretum such as diameter at breast height (dbh), diameter at the base, middle and top of the bole, total height, merchantable height and crown diameter. The basal area and volume were then calculated per species and per family. Several models were fitted for the height – diameter relationship and crown diameter – diameter relationship and crown diameter – dbh relationship. Positive linear relationships were

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36

Lima, Robson Borges de, Eric Bastos Görgens, Fernando Elias, et al. "Height-diameter allometry for tropical forest in northern Amazonia." PLOS ONE 16, no. 12 (2021): e0255197. http://dx.doi.org/10.1371/journal.pone.0255197.

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Height measurements are essential to manage and monitor forest biomass and carbon stocks. However, accurate estimation of this variable in tropical ecosystems is still difficult due to species heterogeneity and environmental variability. In this article, we compare and discuss six nonlinear allometric models parameterized at different scales (local, regional and pantropical). We also evaluate the height measurements obtained in the field by the hypsometer when compared with the true tree height. We used a dataset composed of 180 harvested trees in two distinct areas located in the Amapá State.

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Costa, Emanuel Arnoni, André Felipe Hess, Danieli Regina Klein, and César Augusto Guimarães Finger. "Height-Diameter Models for Araucaria angustifolia (Bertol.) Kuntze in Natural Forests." Journal of Agricultural Science 10, no. 8 (2018): 133. http://dx.doi.org/10.5539/jas.v10n8p133.

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The height-diameter relationship of Araucaria angustifolia trees in different sociological positions (dominant, codominant, dominated) was evaluated in a native forest in the south of Brazil, aiming to find accuracy in its estimation and its use as a component of forest description, growth and yield. The total number of trees of the three sociological positions was 657. Part of these trees of each sociological position was used to estimate the parameters of models, and the remaining for model evaluation. Thus, the objective of this work was to find the best height estimate using nonlinear mode

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38

Lei, Xiangdong, Changhui Peng, Haiyan Wang, and Xiaolu Zhou. "Individual height–diameter models for young black spruce (Picea mariana) and jack pine (Pinus banksiana) plantations in New Brunswick, Canada." Forestry Chronicle 85, no. 1 (2009): 43–56. http://dx.doi.org/10.5558/tfc85043-1.

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Historically, height–diameter models have mainly been developed for mature trees; consequently, few height–diameter models have been calibrated for young forest stands. In order to develop equations predicting the height of trees with small diameters, 46 individual height–diameter models were fitted and tested in young black spruce (Picea mariana) and jack pine (Pinus banksiana) plantations between the ages of 4 to 8 years, measured from 182 plots in New Brunswick, Canada. The models were divided into 2 groups: a diameter group and a second group applying both diameter and additional stand- or

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39

Zhang, Lianjun, Changhui Peng, Shongming Huang, and Xiaolu Zhou. "Development and evaluation of ecoregion-based jack pine height-diameter models for Ontario." Forestry Chronicle 78, no. 4 (2002): 530–38. http://dx.doi.org/10.5558/tfc78530-4.

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The Chapman-Richards growth function is used to model jack pine (Pinus banksiana Lamb.) tree height-diameter relationships at provincial, regional, and ecoregional levels. The results suggest that the tree height-diameter relationships of jack pine are significantly different among the geographic regions of Ontario, depending on local climatic, soil, and ecological conditions. In light of this study, the provincial and regional height-diameter models are not appropriate for predicting tree heights at the ecoregional level. Further, applying a specific ecoregional model to other ecoregions will

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40

Sağlam, Fadime, and Oytun Emre Sakici. "Height-Diameter Relationships for Pinus brutia Ten. in the Adana-Karaisali Region of Türkiye." Dendrobiology 93 (July 4, 2025): 121–31. https://doi.org/10.12657/denbio.093.009.

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In this study, it was aimed to develop height (H)-diameter (D) models for pure Pinus brutia Ten. stands distributed in the Adana-Karaisalı region in Türkiye. Diameter at breast height and tree height data were obtained from 1081 sample trees in 82 sample plots. Additionally, measurements were made regarding various stand variables. Based on the data obtained, parameters were estimated for four base H-D models, which provide estimates based only on diameter at breast height, and five generalized H-D models, which incorporate stand variables in addition to diameter at breast height. According to

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41

Abengmeneng, Cosmas S., and Thomas M. Daayeng. "Regression Models for Key Economic Savanna tree Species: A Case Study of Parkia biglobosa (Jacq.) R. Br. ex G. Don f. in the Guinea Savanna Ecological Zone of Ghana." International Journal of Plant & Soil Science 35, no. 22 (2023): 410–20. http://dx.doi.org/10.9734/ijpss/2023/v35i224149.

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The rising demands for Parkia biglobosa due to its numerous benefits and the lack of active conservation measures have endangered the species in most of its natural ranges. Data on its dendrometry, which is a prerequisite for its sustainable management, are limited especially in Ghana. This study, therefore, investigated the relationships between five dendrometry variables and developed models for predicting them. The prediction models were developed using diameter at breast height and crown diameter as independent variables. Ten randomly distributed trees were sampled, and data collected and

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Vibrans, Alexander Christian, Paolo Moser, Laio Zimermann Oliveira, and João Paulo de Maçaneiro. "HEIGHT-DIAMETER MODELS FOR THREE SUBTROPICAL FOREST TYPES IN SOUTHERN BRAZIL." Ciência e Agrotecnologia 39, no. 3 (2015): 205–15. http://dx.doi.org/10.1590/s1413-70542015000300001.

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Total tree height (h) is often difficult to measure in natural forests. Regression models based on easily accessed variables like DBH (d) can be an alternative, since their assumptions are validated. The aims of this study are to: (i) calibrate specific and generic h-d models for three forest types (Seasonal Deciduous Forest, DEC; Mixed Ombrophilous Forest, MIX; and Dense Rainforest, DEN) in Santa Catarina state testing the regression assumptions and evaluating model quality; (ii) verify different h-d relationship between forest types. The dataset (1,766 measured tree h and 3,150 estimated h)

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Zakrzewski, W. T., and I. E. Bella. "Two new height models for volume estimation of lodgepole pine stands." Canadian Journal of Forest Research 18, no. 2 (1988): 195–201. http://dx.doi.org/10.1139/x88-030.

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To reduce the cost and increase the efficiency of obtaining individual tree height information required for sample plot volume estimation, two general height–diameter (H/D) regression models were developed using two-stage regression analysis and data from 96 lodgepole pine (Pinuscontorta Dougl. var. latifolia Engelm.) sample plots. The derived models were examined using an independent data set of 28 plots. In addition to diameter at breast height (D), these models also included two easily measurable stand parameters as independent variables: quadratic mean diameter (Dq) and the height of a tre

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Rizvi, R., V. Gupta, Ajit, S. Ahlawat, and A. Datta. "Preliminary growth models for Dalbergia sissoo Roxb. plantation in semi-arid region of central India." Indian Journal of Forestry 30, no. 4 (2007): 421–25. http://dx.doi.org/10.54207/bsmps1000-2007-en2x1h.

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Growth models were fitted for eight-year-old Dalbergia sissoo plantation in semi-arid region of Central India. High correlation was found between height and diameter at breast height (0.895). The three parameter model of the form Ln H= a + bDc, where H is height in m and D is dbh in cm, was found best for height-diameter relationship out of eight non-linear functions evaluated. R2, MSE and average prediction bias of this model comes out to be 0.819, 0.014 and 0.091, respectively. The developed model may be used for predicting heights of Dalbergia sissoo on the basis of diameter at breast heigh

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Reed, D. D., E. A. Jones, M. Tomé, and M. C. Araújo. "Models of potential height and diameter for Eucalyptus globulus in Portugal." Forest Ecology and Management 172, no. 2-3 (2003): 191–98. http://dx.doi.org/10.1016/s0378-1127(01)00802-7.

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Rupšys, Petras. "Height-diameter models with stochastic differential equations and mixed-effects parameters." Journal of Forest Research 20, no. 1 (2015): 9–17. http://dx.doi.org/10.1007/s10310-014-0454-1.

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Westfall, James A. "New Models for Predicting Diameter at Breast Height from Stump Dimensions." Northern Journal of Applied Forestry 27, no. 1 (2010): 21–27. http://dx.doi.org/10.1093/njaf/27.1.21.

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Abstract Models to predict dbh from stump dimensions are presented for 18 species groups. Data used to fit the models were collected across thirteen states in the northeastern United States. Primarily because of the presence of multiple measurements from each tree, a mixed-effects modeling approach was used to account for the lack of independence among observations. The heterogeneous error variance was described as a function of stump diameter, which allowed for more accurate representation of prediction intervals. Application of the mean response model (fixed-effects parameters only) to indep

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Santiago-García, Wenceslao, Antonio Heriberto Jacinto-Salinas, Gerardo Rodríguez-Ortiz, et al. "Generalized height-diameter models for five pine species at Southern Mexico." Forest Science and Technology 16, no. 2 (2020): 49–55. http://dx.doi.org/10.1080/21580103.2020.1746696.

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Loubota Panzou, Grace Jopaul, Yannick Enock Bocko, Alain Yves Mavoungou, and Jean-Joël Loumeto. "Height–diameter allometry in African monodominant forest close to mixed forest." Journal of Tropical Ecology 37, no. 2 (2021): 98–107. http://dx.doi.org/10.1017/s0266467421000183.

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AbstractAfrican monodominant forests are frequently formed by Gilbertiodendron dewevrei (De Wild.) J. Leonard and commonly found close to mixed forests. However, previous studies have ignored differences between these two forest types in height–diameter allometry, which is extremely important for aboveground biomass (AGB) estimates. This study aims to evaluate the performance of height–diameter models and their effects on height attributes and AGB estimations in African monodominant and mixed forests. Four 1-ha plots divided in 16 subplots (0.25 ha) were installed in each forest type in northe

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Bormann, B. T. "Diameter-based biomass regression models ignore large sapwood-related variation in Sitka spruce." Canadian Journal of Forest Research 20, no. 7 (1990): 1098–104. http://dx.doi.org/10.1139/x90-145.

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Precise estimates of biomass are needed in productivity and nutrient cycling studies, and for improved estimates of potential productivity. Improvements in prediction of foliage and branch biomass were sought by comparing multiple regression models using stem diameter, sapwood radial thickness, and tree height as independent variables in stands of Sitka spruce (Piceasitchensis (Bong.) Carr.) in southeast Alaska. Five sites were sampled by stratifying trees into four diameter and three sapwood-thickness classes. Within stands, sample trees with thick sapwood consistently had 2–3 times more foli

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