Using Tree Height, Crown Area and Stand-Level Parameters to Estimate Tree Diameter, Volume, and Biomass of <i>Pinus radiata</i>, <i>Eucalyptus globulus</i> and <i>Eucalyptus nitens</i>
Accurate estimates of tree diameter, height, volume, and biomass are important for numerous economic and ecological applications. In this study, we report exponential equations to predict tree DBH (cm), stem volume over bark (VOB, m<sup>3</sup>), and total above-stump biomass (TASB, kg)...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/13/12/2043 |
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| author | Carlos A. Gonzalez-Benecke M. Paulina Fernández Jorge Gayoso Matias Pincheira Maxwell G. Wightman |
| author_facet | Carlos A. Gonzalez-Benecke M. Paulina Fernández Jorge Gayoso Matias Pincheira Maxwell G. Wightman |
| author_sort | Carlos A. Gonzalez-Benecke |
| collection | DOAJ |
| description | Accurate estimates of tree diameter, height, volume, and biomass are important for numerous economic and ecological applications. In this study, we report exponential equations to predict tree DBH (cm), stem volume over bark (VOB, m<sup>3</sup>), and total above-stump biomass (TASB, kg) using three varying levels of input data for <i>Pinus radiata</i> D. Don, <i>Eucalyptus globulus</i> Labill., and <i>Eucalyptus nitens</i> (H.Deane & Maiden) Maiden planted trees. The three sets of input data included: (1) tree height (HT, m), (2) tree HT and ground projected living crown area (CA, m<sup>2</sup>), and (3) tree HT, CA, and additional stand parameters. The analysis was performed using a large dataset covering the range of distribution of the species in central Chile and included stands of varying ages and planting densities. The first set of equations using only HT were satisfactory with Adj-R<sup>2</sup> values ranging from 0.78 to 0.98 across all species and variables. For all three species, estimation of DBH, VOB, and TASB as a function of HT improved when CA was added as an additional independent variable, increasing Adj-<i>R</i><sup>2</sup> and reducing RMSE. The inclusion of stand variables, such as age and stand density, also resulted in further improvement in model performance. The models reported in this study are a robust alternative for DBH, VOB, and TASB estimations on planted stands across a wide range of ages and densities, when height and CA are known, especially when input data are derived from remote sensing techniques. |
| first_indexed | 2024-03-09T16:37:50Z |
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| id | doaj.art-10f7c4f73f124d24a5b8c2758b10d82e |
| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-09T16:37:50Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Forests |
| spelling | doaj.art-10f7c4f73f124d24a5b8c2758b10d82e2023-11-24T14:54:24ZengMDPI AGForests1999-49072022-12-011312204310.3390/f13122043Using Tree Height, Crown Area and Stand-Level Parameters to Estimate Tree Diameter, Volume, and Biomass of <i>Pinus radiata</i>, <i>Eucalyptus globulus</i> and <i>Eucalyptus nitens</i>Carlos A. Gonzalez-Benecke0M. Paulina Fernández1Jorge Gayoso2Matias Pincheira3Maxwell G. Wightman4Department of Forest Engineering, Resources and Management, College of Forestry, Oregon State University, Corvallis, OR 97331, USADepartamento de Ecosistemas y Medio Ambiente, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Santiago 7820436, ChileFacultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, Valdivia 5110566, ChileForestal Mininco SpA, CMPC, Los Ángeles 4440000, ChileDepartment of Forest Engineering, Resources and Management, College of Forestry, Oregon State University, Corvallis, OR 97331, USAAccurate estimates of tree diameter, height, volume, and biomass are important for numerous economic and ecological applications. In this study, we report exponential equations to predict tree DBH (cm), stem volume over bark (VOB, m<sup>3</sup>), and total above-stump biomass (TASB, kg) using three varying levels of input data for <i>Pinus radiata</i> D. Don, <i>Eucalyptus globulus</i> Labill., and <i>Eucalyptus nitens</i> (H.Deane & Maiden) Maiden planted trees. The three sets of input data included: (1) tree height (HT, m), (2) tree HT and ground projected living crown area (CA, m<sup>2</sup>), and (3) tree HT, CA, and additional stand parameters. The analysis was performed using a large dataset covering the range of distribution of the species in central Chile and included stands of varying ages and planting densities. The first set of equations using only HT were satisfactory with Adj-R<sup>2</sup> values ranging from 0.78 to 0.98 across all species and variables. For all three species, estimation of DBH, VOB, and TASB as a function of HT improved when CA was added as an additional independent variable, increasing Adj-<i>R</i><sup>2</sup> and reducing RMSE. The inclusion of stand variables, such as age and stand density, also resulted in further improvement in model performance. The models reported in this study are a robust alternative for DBH, VOB, and TASB estimations on planted stands across a wide range of ages and densities, when height and CA are known, especially when input data are derived from remote sensing techniques.https://www.mdpi.com/1999-4907/13/12/2043radiata pineblue gumshinning gumdiameter-height allometrycrown diameterstem volume |
| spellingShingle | Carlos A. Gonzalez-Benecke M. Paulina Fernández Jorge Gayoso Matias Pincheira Maxwell G. Wightman Using Tree Height, Crown Area and Stand-Level Parameters to Estimate Tree Diameter, Volume, and Biomass of <i>Pinus radiata</i>, <i>Eucalyptus globulus</i> and <i>Eucalyptus nitens</i> Forests radiata pine blue gum shinning gum diameter-height allometry crown diameter stem volume |
| title | Using Tree Height, Crown Area and Stand-Level Parameters to Estimate Tree Diameter, Volume, and Biomass of <i>Pinus radiata</i>, <i>Eucalyptus globulus</i> and <i>Eucalyptus nitens</i> |
| title_full | Using Tree Height, Crown Area and Stand-Level Parameters to Estimate Tree Diameter, Volume, and Biomass of <i>Pinus radiata</i>, <i>Eucalyptus globulus</i> and <i>Eucalyptus nitens</i> |
| title_fullStr | Using Tree Height, Crown Area and Stand-Level Parameters to Estimate Tree Diameter, Volume, and Biomass of <i>Pinus radiata</i>, <i>Eucalyptus globulus</i> and <i>Eucalyptus nitens</i> |
| title_full_unstemmed | Using Tree Height, Crown Area and Stand-Level Parameters to Estimate Tree Diameter, Volume, and Biomass of <i>Pinus radiata</i>, <i>Eucalyptus globulus</i> and <i>Eucalyptus nitens</i> |
| title_short | Using Tree Height, Crown Area and Stand-Level Parameters to Estimate Tree Diameter, Volume, and Biomass of <i>Pinus radiata</i>, <i>Eucalyptus globulus</i> and <i>Eucalyptus nitens</i> |
| title_sort | using tree height crown area and stand level parameters to estimate tree diameter volume and biomass of i pinus radiata i i eucalyptus globulus i and i eucalyptus nitens i |
| topic | radiata pine blue gum shinning gum diameter-height allometry crown diameter stem volume |
| url | https://www.mdpi.com/1999-4907/13/12/2043 |
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