Forest plantations site index for Pinus patula in Mexico State
The lack of quantitative silvicultural tools to classify the productivity of forested areas in the planning, management, and use of commercial forest plantations (CFPs) is a recurring problem. The objective was to model the site index (SI) as a function of age (E) by including covariates for CFPs of...
| Hoofdauteurs: | , , , , , |
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| Formaat: | Online |
| Taal: | spa |
| Gepubliceerd in: |
Instituto de Ecología, A.C.
2022
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| Online toegang: | https://myb.ojs.inecol.mx/index.php/myb/article/view/2308 |
| _version_ | 1799769423587835904 |
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| author | Hernández-Ramos, Jonathan Hernández-Ramos, Adrián Ordaz-Ruiz , Gustavo García-Espinoza, Guadalupe Geraldine García-Magaña , J. Jesús García-Cuevas, Xavier |
| author_facet | Hernández-Ramos, Jonathan Hernández-Ramos, Adrián Ordaz-Ruiz , Gustavo García-Espinoza, Guadalupe Geraldine García-Magaña , J. Jesús García-Cuevas, Xavier |
| author_sort | Hernández-Ramos, Jonathan |
| collection | MYB |
| description | The lack of quantitative silvicultural tools to classify the productivity of forested areas in the planning, management, and use of commercial forest plantations (CFPs) is a recurring problem. The objective was to model the site index (SI) as a function of age (E) by including covariates for CFPs of Pinus patula in forest regions VI and VII of the State of Mexico. Data from 65 sampling sites (250 m2) distributed in 90.8 ha of eleven PFC between four and 20 years old were used to adjust the growth model of Cieszewski y Bella (1989) with the R® software using fixed and mixed effects. The statistical evaluation was performed by fulfilling the regression assumptions and the values of the mean bias ( ), bias in percentage ( ) and the root mean square error (RMSE). Growth curves for dominant height (Ad), current and mean annual increase (ICA and IMA) were generated. The model complies with the regression assumptions. The differences in Ad are determined by the topographical exposure where the lands facing East and North are the most productive. The , and RMSE were -0.091 m, -0.358% and 2.4 m, respectively. Polymorphic growth curves at a base age of 20 years described the Ad and the SI was determined with labels of 19 m, 22 m, and 25 m. The maximum ICA and technical turn were at six and eleven years. Classifying CFPs according to their yield and timber productivity provides guidelines for their silvicultural management. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-2308 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-23082023-03-04T05:10:05Z Forest plantations site index for Pinus patula in Mexico State Índice de sitio para plantaciones forestales de Pinus patula en el Estado de México Hernández-Ramos, Jonathan Hernández-Ramos, Adrián Ordaz-Ruiz , Gustavo García-Espinoza, Guadalupe Geraldine García-Magaña , J. Jesús García-Cuevas, Xavier altura dominante crecimiento polimórfico efectos mixtos modelo de crecimiento rendimiento maderable dominant height polymorphic growth mixed effects growth pattern timber yield The lack of quantitative silvicultural tools to classify the productivity of forested areas in the planning, management, and use of commercial forest plantations (CFPs) is a recurring problem. The objective was to model the site index (SI) as a function of age (E) by including covariates for CFPs of Pinus patula in forest regions VI and VII of the State of Mexico. Data from 65 sampling sites (250 m2) distributed in 90.8 ha of eleven PFC between four and 20 years old were used to adjust the growth model of Cieszewski y Bella (1989) with the R® software using fixed and mixed effects. The statistical evaluation was performed by fulfilling the regression assumptions and the values of the mean bias ( ), bias in percentage ( ) and the root mean square error (RMSE). Growth curves for dominant height (Ad), current and mean annual increase (ICA and IMA) were generated. The model complies with the regression assumptions. The differences in Ad are determined by the topographical exposure where the lands facing East and North are the most productive. The , and RMSE were -0.091 m, -0.358% and 2.4 m, respectively. Polymorphic growth curves at a base age of 20 years described the Ad and the SI was determined with labels of 19 m, 22 m, and 25 m. The maximum ICA and technical turn were at six and eleven years. Classifying CFPs according to their yield and timber productivity provides guidelines for their silvicultural management. La falta de herramientas silvícolas cuantitativas para clasificar la productividad de áreas arboladas en la planificación, gestión y aprovechamiento de plantaciones forestales comerciales (PFC) es un problema recurrente. El objetivo fue modelar el índice de sitio (IS) en función de la edad (E) mediante la inclusión de covariables para las PFC de Pinus patula en las regiones forestales VI y VII del Estado de México. Se utilizaron datos de 65 sitios de muestreo (250 m2) distribuidos en 90.8 ha de once PFC de entre 4 y 20 años, para ajustar con el software R® mediante efectos fijos y mixtos el modelo de crecimiento de Cieszewski y Bella (1989). La evaluación estadística se realizó mediante el cumplimiento de supuestos de regresión y los valores del sesgo medio ( ), sesgo en porcentaje ( ) y la raíz del error medio cuadrático (REMC). Se generaron curvas de crecimiento en altura dominante (Ad), incremento corriente y medio anual (ICA e IMA). El modelo cumple con los supuestos de regresión. Las diferencias en Ad están determinadas por la exposición topográfica en donde los terrenos con orientación Este y Norte son los más productivos. El , y RCME fueron de -0.091 m, -0.358% y 2.4 m, respectivamente. Las curvas de crecimiento polimórficas a una edad base de 20 años describieron la Ad y se determinó el IS con clases de 19 m, 22 m y 25 m. El ICA máximo y turno técnico fueron a los seis y once años. Clasificar las PFC de acuerdo con su rendimiento y productividad maderable da pautas para su manejo silvícola. Instituto de Ecología, A.C. 2022-12-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf text/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/2308 10.21829/myb.2022.2822308 Madera y Bosques; Vol. 28 No. 2 (2022): Summer 2022; e2822308 Madera y Bosques; Vol. 28 Núm. 2 (2022): Verano 2022; e2822308 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/2308/2409 https://myb.ojs.inecol.mx/index.php/myb/article/view/2308/2434 10.21829/myb.2019.252835 10.21829/myb.2020.261913 http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Hernández-Ramos, Jonathan Hernández-Ramos, Adrián Ordaz-Ruiz , Gustavo García-Espinoza, Guadalupe Geraldine García-Magaña , J. Jesús García-Cuevas, Xavier Forest plantations site index for Pinus patula in Mexico State |
| title | Forest plantations site index for Pinus patula in Mexico State |
| title_full | Forest plantations site index for Pinus patula in Mexico State |
| title_fullStr | Forest plantations site index for Pinus patula in Mexico State |
| title_full_unstemmed | Forest plantations site index for Pinus patula in Mexico State |
| title_short | Forest plantations site index for Pinus patula in Mexico State |
| title_sort | forest plantations site index for pinus patula in mexico state |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/2308 |
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