Comparison of diameter-distribution-prediction, stand-table-projection, and individual-tree-growth modeling approaches for young red alder plantations

Knowe, Steven A.; Ahrens, Glenn R.; DeBell, Dean S.

doi:10.1016/s0378-1127(97)00075-3

Cited by 29 publications

(15 citation statements)

References 11 publications

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“…Since 1973, based on the study proposed by Bailey and Dell (1973), the Weibull function (MUrTHy et al, 2004) has been widely used in forestry TUrNBULL, 1981;CaO, 2004;CLUTTEr;aLLiSON, 1974;HaFLEy;SCHrEUDEr, 1977;KNOWE et al, 1997;MaTNEy;SULLiVaN, 1982;NOGUEira et al, 2005;PaLaHÍ et al, 2006PaLaHÍ et al, , 2007. a pdf may be fitted by methods of moments (FraziEr, 1981), percentiles (BaiLEy et al, 1989), maximum likelihood (FiSHEr, 1922), by combining methods of moments and percentiles (BaLDWiN JUNiOr;FEDUCCia, 1987), or by heuristic methods (aBBaSi et al, 2006(aBBaSi et al, , 2008.…”

Section: Binoti D H B Et Almentioning

confidence: 99%

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Probability density functions for description of diameter distribution in thinned stands of Tectona grandis

Binoti

Leite

et al. 2012

CERNE

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ABSTRACT:The objective of this study was to evaluate the effectiveness of fatigue life, Frechet, Gamma, Generalized Gamma, Generalized Logistic, Log-logistic, Nakagami, Beta, Burr, Dagum, Weibull and Hyperbolic distributions in describing diameter distribution in teak stands subjected to thinning at different ages. Data used in this study originated from 238 rectangular permanent plots 490 m 2 in size, installed in stands of Tectona grandis L. f. in Mato Grosso state, Brazil. The plots were measured at ages 34, 43, 55, 68, 81, 82, 92, 104, 105, 120, 134 and 145 months on average. Thinning was done in two occasions: the first was systematic at age 81months, with a basal area intensity of 36%, while the second was selective at age 104 months on average and removed poorer trees, reducing basal area by 30%. Fittings were assessed by the Kolmogorov-Smirnov goodness-of-fit test. The Log-logistic (3P), Burr (3P), Hyperbolic (3P), Burr (4P), Weibull (3P), Hyperbolic (2P), Fatigue Life (3P) and Nakagami functions provided more satisfactory values for the k-s test than the more commonly used Weibull function. 34, 43, 55, 68, 81, 82, 92, 104, 105, 120, 134

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Section: Binoti D H B Et Almentioning

confidence: 99%

“…Functions were fitted using the maximum likelihood method, with software kyplot Version 2.0 beta 15 (1997( -2001c. Functions having a location parameter were fitted with and without the parameter, as it can be replaced by the minimum diameter of the stand (CLUTTEr et al, 1983).…”

Section: Function Fitting and Assessmentmentioning

confidence: 99%

Probability density functions for description of diameter distribution in thinned stands of Tectona grandis

Binoti

Leite

et al. 2012

CERNE

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“…separating past cumulative competitive interactions from current stage of development. For even-aged stands, it is generally accepted that smaller trees have less diameter growth than larger trees, and trees in stands with low basal area exhibit greater growth than trees in stands with higher basal area (Knowe et al, 1997). The most significant predictor of a tree growth is its current size, which is a reflection of its past competitive interactions (Bevilacqua, 1999).…”

Section: Modeling Diameter Increment In Pinus Occidentalis 171mentioning

confidence: 99%

Modeling Stem Diameter Increment in Individual Pinus occidentalis Sw. trees in La Sierra, Dominican Republic

Bueno

Bevilacqua

2010

For. syst.

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One of the most common and important tree characteristics used in forest management decision-making is tree diameter-at-breast height (DBH). This paper presents results on an evaluation of two growth functions developed to model stem diameter increases in individual Pinus occidentalis Sw. trees in La Sierra, Dominican Republic. The first model was developed in order to predict future DBH (FDM) at different intervals of time and the other for predicting growth, that is, periodic annual diameter increment (PADIM). Each model employed two statistical techniques for fitting model parameters: stepwise ordinary least squares (OLS) regression, and mixed models. The two statistical approaches varied in how they accounted for the repeated measurements on individual trees over time, affecting standard error estimates and statistical inference of model parameters. Each approach was evaluated based on six goodnessof-fit statistics, using both calibration and validation data sets. The objectives were 1) to determine the best model for predicting future tree DBH; 2) to determine the best model for predicting periodic annual diameter increment, both models using tree size, age, site index and different indices of competitive status; and 3) compare which of these two modeling approaches predicts better the future DBH.OLS provided a better fit for both of the growth functions, especially in regards to bias. Both models showed advantages and disadvantages when they were used to predict growth and future diameter. For the prediction of future diameter with FDM, accuracy of predictions were within one centimeter for a five-year projection interval. The PADIM presented negligible bias in estimating future diameter, although there was a small increase in bias as time of prediction increased. As expected, each model was the best in estimating the response variable it was developed for.. However, a closer examination of the distribution of errors showed a slight advantage of the FDM against the PADIM. Based on this, it is proposed that the FDM model is used to estimate future diameter and periodic diameter increment (growth) of P. occidentalis.Additional key words: diameter growth, repeated measures, mixed models, OLS, site index, indices of competitive status. Resumen Modelando el incremento en diámetro del fuste en árboles individuales de Pinus occidentalis Sw. en La Sierra, República DominicanaUna de las características más empleadas e importantes utilizada en la toma de decisiones en el manejo forestal es el diámetro normal -DBH-de los árboles. En este artículo se presentan los resultados de la evaluación de dos funciones de crecimiento utilizadas para predecir el incremento futuro en diámetro normal (FDM) en intervalos de tiempo diferentes, y el crecimiento o incremento periódico anual en diámetro normal (PADIM) en árboles individuales de Pinus occidentalis, en La Sierra, República Dominicana. Se emplearon dos técnicas estadísticas para el ajuste de los parámetros: cuadrados mínimos ordinarios (OLS) por etapas de regresión...

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“…An average tree diameter of 38 cm can be reached after 25 to 30 years on good sites with stand volumes of 275 m 3 /hectare [84]). The site index and height growth equations developed from natural stands [71] may underestimate potential height and volume growth of plantations at moderate to moderately high densities [85].…”

Section: Height Growth Comparisonmentioning

confidence: 99%

“…Red alder is expected to die out of these stands but it is unclear how long this will take. Some researchers in Pacific Northwest have reported that by 50 years most alder stands were breaking up and few stands remain intact beyond 100 years [85]. Newton and Cole [79] report for stands in Oregon that all alders will succumb in less than 130 yearsThe presence of alders may mitigate the intense stage of stem exclusion in pure conifer even-aged stands in Alaska [38,94] and these mixed alder-conifer stands allows more light for development of understory plants.…”

Section: All Sitesmentioning

confidence: 99%

Red Alder-Conifer Stands in Alaska: An Example of Mixed Species Management to Enhance Structural and Biological Complexity

Deal

Orlikowska

D’Amore

et al. 2017

Forests

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Abstract:There is worldwide interest in managing forests to improve biodiversity, enhance ecosystem services and assure long-term sustainability of forest resources. An increasingly important goal of forest management is to increase stand diversity and improve wildlife and aquatic habitat. Well-planned silvicultural systems containing a mixture of broadleaf-conifer species have potential to enhance stand diversity and provide other ecosystem services earlier than typical even-aged conifer plantations. Here, we use the example of mixed Sitka spruce/western hemlock and red alder in young, managed stands in southeast Alaska to achieve these goals. We briefly describe the silvics of Sitka spruce, western hemlock and red alder plantations as pure conifer stands or pure broadleaf stands. Then, we synthesize studies of mixed red alder-Sitka spruce/western hemlock stands in southeast Alaska and present their potential for improving stand structural complexity, biodiversity and other ecosystem services over pure conifer forests. Finally, we discuss some of the opportunities and potential tradeoffs for managing mixed broadleaf-conifer stands for providing a number of natural resources and the influence of these broadleaf-conifer forests on ecosystem linkages and processes.

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Comparison of diameter-distribution-prediction, stand-table-projection, and individual-tree-growth modeling approaches for young red alder plantations

Cited by 29 publications

References 11 publications

Probability density functions for description of diameter distribution in thinned stands of Tectona grandis

Probability density functions for description of diameter distribution in thinned stands of Tectona grandis

Modeling Stem Diameter Increment in Individual Pinus occidentalis Sw. trees in La Sierra, Dominican Republic

Red Alder-Conifer Stands in Alaska: An Example of Mixed Species Management to Enhance Structural and Biological Complexity

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