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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
24/06/2020 |
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Actualizado : |
24/06/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
RACHID, C.; MASON, E.G.; WOOLLONS, R.C.; LANDSBERG, J.J. |
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Afiliación : |
ANA CECILIA RACHID CASNATI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EUAN G. MASON, School of Forestry, University of Canterbury, Christchurch, New Zealand; RICHARD C. WOOLLONS, School of Forestry, University of Canterbury, Christchurch, New Zealand; JOE J. LANDSBERG, Whithycombe, Church Lane, Mt Wilson, NSW, Australia. |
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Título : |
Modelling growth of Pinus taeda and Eucalyptus grandis as a function of light sums modified by air temperature, vapour pressure deficit, and water balance |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
New Zealand Journal of Forestry Science, v. 50, no. 3, 2020. DOI: https://doi.org/10.33494/nzjfs502020x17x . OPEN ACCESS. |
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ISSN : |
1179-5395 |
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DOI : |
10.33494/nzjfs502020x17x |
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Idioma : |
Español |
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Notas : |
Article history: Received for publication 9 November 2018; accepted in revised form 28 May 2020; published on-line: 17/06/2020. |
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Contenido : |
Abstract: Background: Hybrid mensurational and physiological models seek to combine precision, process explanation, simplicity in parameter definition, and ability to estimate wood products. The aim of this study was to assess the suitability and the advantages of the hybrid mensurational-physiological approach where time has been substituted for light sums in growth equations, to replace traditional time-based models in forecasting systems for Eucalyptus grandis W.Hill and Pinus taeda L. Methods: Using 974 permanent sample plots from plantations in Uruguay, we adjusted growth equations to project dominant height, net basal area, maximum diameter breast height, and standard deviation of diameters as a function
of accumulated light restricted by modifiers that account for principal physiological limitations on photosynthesis. We analysed: i) the inclusion of terrain aspect and slope information for computing radiation; ii) the use of modifiers for temperature, vapour pressure deficit and water balance; iii) bias and precision of hybrid models with respect to time-based
equations. Results: Growth equations showed a good fit for both species when modelled as a function of light sums modified by vapor pressure deficit, air temperature, and water balance. Accounting for slope orientation when computing light sums did not increase precision. Compared to time-based formulations, hybrid models presented a root mean squared error
reduction of 10.7% and 4.5% on average for Eucalyptus grandis and for Pinus taeda, respectively, and the relationship between growth and resource availability was consistent with eco-physiological principles for both species. Conclusions: The hybrid methodology can be applied as a basis of forecasting systems for the species studies with significant advantages over time-based models, such as: (i) an increase in precision; (ii) an increase in spatial and time resolution; and (iii) the possibility of simulating the effect of changes in air temperature and water availability on tree growth. MenosAbstract: Background: Hybrid mensurational and physiological models seek to combine precision, process explanation, simplicity in parameter definition, and ability to estimate wood products. The aim of this study was to assess the suitability and the advantages of the hybrid mensurational-physiological approach where time has been substituted for light sums in growth equations, to replace traditional time-based models in forecasting systems for Eucalyptus grandis W.Hill and Pinus taeda L. Methods: Using 974 permanent sample plots from plantations in Uruguay, we adjusted growth equations to project dominant height, net basal area, maximum diameter breast height, and standard deviation of diameters as a function
of accumulated light restricted by modifiers that account for principal physiological limitations on photosynthesis. We analysed: i) the inclusion of terrain aspect and slope information for computing radiation; ii) the use of modifiers for temperature, vapour pressure deficit and water balance; iii) bias and precision of hybrid models with respect to time-based
equations. Results: Growth equations showed a good fit for both species when modelled as a function of light sums modified by vapor pressure deficit, air temperature, and water balance. Accounting for slope orientation when computing light sums did not increase precision. Compared to time-based formulations, hybrid models presented a root mean squared error
reduction of 10.7% and 4.5% on average for Eucalyptus ... Presentar Todo |
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Palabras claves : |
EUCALYPTUS GRANDIS; FOREST MODELLING; HYBRID; MODIFIED LIGHT SUMS; PINUS TAEDA; STAND DYNAMICS. |
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Asunto categoría : |
K10 Producción forestal |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/14476/1/Rachid-2020-NZJFS-50-3.pdf
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Marc : |
LEADER 03052naa a2200265 a 4500
001 1061135
005 2020-06-24
008 2020 bl uuuu u00u1 u #d
022 $a1179-5395
024 7 $a10.33494/nzjfs502020x17x$2DOI
100 1 $aRACHID, C.
245 $aModelling growth of Pinus taeda and Eucalyptus grandis as a function of light sums modified by air temperature, vapour pressure deficit, and water balance$h[electronic resource]
260 $c2020
500 $aArticle history: Received for publication 9 November 2018; accepted in revised form 28 May 2020; published on-line: 17/06/2020.
520 $aAbstract: Background: Hybrid mensurational and physiological models seek to combine precision, process explanation, simplicity in parameter definition, and ability to estimate wood products. The aim of this study was to assess the suitability and the advantages of the hybrid mensurational-physiological approach where time has been substituted for light sums in growth equations, to replace traditional time-based models in forecasting systems for Eucalyptus grandis W.Hill and Pinus taeda L. Methods: Using 974 permanent sample plots from plantations in Uruguay, we adjusted growth equations to project dominant height, net basal area, maximum diameter breast height, and standard deviation of diameters as a function of accumulated light restricted by modifiers that account for principal physiological limitations on photosynthesis. We analysed: i) the inclusion of terrain aspect and slope information for computing radiation; ii) the use of modifiers for temperature, vapour pressure deficit and water balance; iii) bias and precision of hybrid models with respect to time-based equations. Results: Growth equations showed a good fit for both species when modelled as a function of light sums modified by vapor pressure deficit, air temperature, and water balance. Accounting for slope orientation when computing light sums did not increase precision. Compared to time-based formulations, hybrid models presented a root mean squared error reduction of 10.7% and 4.5% on average for Eucalyptus grandis and for Pinus taeda, respectively, and the relationship between growth and resource availability was consistent with eco-physiological principles for both species. Conclusions: The hybrid methodology can be applied as a basis of forecasting systems for the species studies with significant advantages over time-based models, such as: (i) an increase in precision; (ii) an increase in spatial and time resolution; and (iii) the possibility of simulating the effect of changes in air temperature and water availability on tree growth.
653 $aEUCALYPTUS GRANDIS
653 $aFOREST MODELLING
653 $aHYBRID
653 $aMODIFIED LIGHT SUMS
653 $aPINUS TAEDA
653 $aSTAND DYNAMICS
700 1 $aMASON, E.G.
700 1 $aWOOLLONS, R.C.
700 1 $aLANDSBERG, J.J.
773 $tNew Zealand Journal of Forestry Science$gv. 50, no. 3, 2020. DOI: https://doi.org/10.33494/nzjfs502020x17x . OPEN ACCESS.
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