Crown condition of Mexican forests: Analysis 2014
Data analysis of the health indicator crown condition is presented for the data collected in 2014 by the National Forest and Soils Inventory (NFSI); it included 88 162 trees localized in 1443 plots. The analyzed variables were: Live crown ratio (Lcr), Crown density (Cden), Foliage transparency (Ftr...
| Päätekijät: | , , , , |
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| Aineistotyyppi: | Online |
| Kieli: | spa |
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Instituto de Ecología, A.C.
2021
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| Linkit: | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2712114 |
| _version_ | 1799769405145481216 |
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| author | Alvarado-Rosales, Dionicio Saavedra-Romero, Luz De Lourdes Franco-Islas, Yolanda Villa-Castillo, Jaime Quiroz-Reygadas, David Antonio |
| author_facet | Alvarado-Rosales, Dionicio Saavedra-Romero, Luz De Lourdes Franco-Islas, Yolanda Villa-Castillo, Jaime Quiroz-Reygadas, David Antonio |
| author_sort | Alvarado-Rosales, Dionicio |
| collection | MYB |
| description | Data analysis of the health indicator crown condition is presented for the data collected in 2014 by the National Forest and Soils Inventory (NFSI); it included 88 162 trees localized in 1443 plots. The analyzed variables were: Live crown ratio (Lcr), Crown density (Cden), Foliage transparency (Ftra), and Crown dieback (Cdie). Descriptive statistics were obtained for each one, for all the trees, by group (conifers and hardwoods), and by genus. Tree health was categorized based on thresholds proposed in previous studies. The average values for Lcr, Cden, Ftra, Cdie for all the trees were 35.9%, 44.4%, 50.6% and 2.6%, respectively, meanwhile for hardwoods 32.7%, 44.2%, 50.5% and 2.7% were the reciprocal, and in conifers they were 47.5%, 46.2%, 51.1% and 1.2%. Averages for 18 genera with n≥ 1000 were obtained. Regarding health, more than 50% of the trees showed Lcr in the poor category, 27.9% in the same category for Cden, 60.26% with severe Ftra and less than 1%, severe Cdie. 54.2% of the hardwoods showed poor Lcr, and 67% of the conifers severe Ftra. Nayarit and Jalisco states presented the lowest quality of tree crowns. It is a priority to generate our tree crown standards, to train field crews, and perform measurements in the right season. This is the first analysis of crown condition health indicator for Mexican forests, a joint effort of the NFSI and the Forest Health Department of the National Forestry Commission. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-2114 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2021 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-21142022-11-29T22:30:21Z Crown condition of Mexican forests: Analysis 2014 Condición de copa de bosques y selvas de México: Análisis 2014 Alvarado-Rosales, Dionicio Saavedra-Romero, Luz De Lourdes Franco-Islas, Yolanda Villa-Castillo, Jaime Quiroz-Reygadas, David Antonio categorías de salud densidad de copa indicador de salud forestal muerte regresiva transparencia de follaje. health categories crown density forest health indicators crown dieback foliage transparency Data analysis of the health indicator crown condition is presented for the data collected in 2014 by the National Forest and Soils Inventory (NFSI); it included 88 162 trees localized in 1443 plots. The analyzed variables were: Live crown ratio (Lcr), Crown density (Cden), Foliage transparency (Ftra), and Crown dieback (Cdie). Descriptive statistics were obtained for each one, for all the trees, by group (conifers and hardwoods), and by genus. Tree health was categorized based on thresholds proposed in previous studies. The average values for Lcr, Cden, Ftra, Cdie for all the trees were 35.9%, 44.4%, 50.6% and 2.6%, respectively, meanwhile for hardwoods 32.7%, 44.2%, 50.5% and 2.7% were the reciprocal, and in conifers they were 47.5%, 46.2%, 51.1% and 1.2%. Averages for 18 genera with n≥ 1000 were obtained. Regarding health, more than 50% of the trees showed Lcr in the poor category, 27.9% in the same category for Cden, 60.26% with severe Ftra and less than 1%, severe Cdie. 54.2% of the hardwoods showed poor Lcr, and 67% of the conifers severe Ftra. Nayarit and Jalisco states presented the lowest quality of tree crowns. It is a priority to generate our tree crown standards, to train field crews, and perform measurements in the right season. This is the first analysis of crown condition health indicator for Mexican forests, a joint effort of the NFSI and the Forest Health Department of the National Forestry Commission. Se presenta el análisis de los datos colectados en 2014 por el Inventario Nacional Forestal y de Suelos (INFyS), para el indicador de salud forestal denominado condición de copa, el cual incluyó 88 162 árboles localizados en 1443 conglomerados. Las variables analizadas fueron: proporción de copa viva (Pcv), densidad de copa (DenC), transparencia de follaje (TraF) y muerte regresiva (Mreg), para las que se obtuvieron estadísticos descriptivos por géneros combinados, por grupo (coníferas y latifoliadas) y por género. También, se categorizó su salud con base en umbrales propuestos en estudios previos. Los valores promedio de Pcv, DenC, TraF, Mreg para géneros combinados fueron 35.9%, 44.4%, 50.6% y 2.6%, respectivamente, mientras que para latifoliadas fueron de forma recíproca 32.7%, 44.2%, 50.5% y 2.7% y, en coníferas, fueron 47.5%, 46.2%, 51.1% y 1.2%. Se presentan promedios para 18 géneros con n ≥ 1000. En cuanto a la salud, más de 50% de los árboles presentó una Pcv en la categoría pobre, 27.9% una DenC en la misma categoría, 60.26% una TraF severa y menos de 1%, una Mreg severa. Cincuenta y cuatro punto dos de cada cien de las latifoliadas presentaron Pcv pobre y 67% de las coníferas una TraF severa. Nayarit y Jalisco presentaron el arbolado de menor calidad de copas. Es prioritario generar estándares de copa propios, capacitar a las brigadas de campo y realizar las mediciones en la época apropiada. Este es el primer estudio sobre el indicador condición de copa en bosques y selvas de México, producto del esfuerzo del INFyS y la Gerencia de Sanidad de la Comisión Nacional Forestal. Instituto de Ecología, A.C. 2021-04-21 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/e2712114 10.21829/myb.2021.2712114 Madera y Bosques; Vol. 27 No. 1 (2021): Spring 2021 Madera y Bosques; Vol. 27 Núm. 1 (2021): Primavera 2021 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/e2712114/2219 https://myb.ojs.inecol.mx/index.php/myb/article/view/e2712114/2239 10.21829/myb.2017.232290 10.21829/myb.2017.232343 Derechos de autor 2021 Madera y Bosques http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Alvarado-Rosales, Dionicio Saavedra-Romero, Luz De Lourdes Franco-Islas, Yolanda Villa-Castillo, Jaime Quiroz-Reygadas, David Antonio Crown condition of Mexican forests: Analysis 2014 |
| title | Crown condition of Mexican forests: Analysis 2014 |
| title_full | Crown condition of Mexican forests: Analysis 2014 |
| title_fullStr | Crown condition of Mexican forests: Analysis 2014 |
| title_full_unstemmed | Crown condition of Mexican forests: Analysis 2014 |
| title_short | Crown condition of Mexican forests: Analysis 2014 |
| title_sort | crown condition of mexican forests: analysis 2014 |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2712114 |
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