Indicador condición de copa y su aplicación en tres parques del Distrito Federal

Hernández, Alejandra Yunuen Zaragoza; Alcalá, Víctor Manuel Cetina; López, Miguel A.; Hilú, Alicia Chacalo; Bauer, María de Lourdes de Lourdes de la Isla de de; Rosas, Héctor González

doi:10.29298/rmcf.v5i25.302

Cited by 5 publications

(7 citation statements)

References 7 publications

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“…Trees with high Cdie values generally exhibit poor structural conditions, an irregular crown shape and little foliage; therefore, a value higher than 5% in Cdie would indicate that they are not healthy trees [6,14]. The urban environment is a stress factor for trees, with a lack of water being one of the factors present in urban areas which mainly affects variables such as Cdie [4,6].…”

Section: Discussionmentioning

confidence: 99%

“…When they had a different opinion, a consensus was reached under an average value. Despite the fact that variables were recorded with values in percentage increments of 5% on a scale from 0 to 100 [4,6], in order to avoid a rounding down effect or ranges with few results, data were analyzed in increments of 10%.…”

Section: Evaluation Of Crown Variablesmentioning

confidence: 99%

“…Population growth leads to an accelerated change from a natural environment to an urban landscape; therefore, it is advisable to conserve and increase vegetation through the creation of a greater number of urban green areas (UGAs) [1][2][3]. The most important vegetation in UGAs are trees, as they provide a wide range of environmental, ecological and social services [4][5][6]. However, urban trees face stressful conditions due to factors such as the heat island effect, soil compaction, limited growth space for roots, vandalism, inadequate management practices, and water and nutrient deficiency, among others [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Tree crown assessment is used as an indicator of health condition in forest species, with some variables being crown density, crown transparency and dieback [11,16,17]. Recently, these indicators have been adapted and used to estimate the health condition of urban trees; however, obtaining this information involves in situ data collection by at least two people [4,6,[17][18][19], which entails a considerable expenditure of time and is complicated when access to the terrain is restricted or dangerous; currently, this method is frequently used to obtain information on tree health condition in both forest and urban areas [4,6,10,20]. On the other hand, there are methods to evaluate physiological processes to quantify the response of trees to stress, one of them being chlorophyll fluorescence (Fv/Fm).…”

Section: Introductionmentioning

confidence: 99%

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Tree Health Condition in Urban Green Areas Assessed through Crown Indicators and Vegetation Indices

Morales-Gallegos,

Martínez-Trinidad,

Hernández-de la Rosa

et al. 2023

Forests

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The urban environment induces stress on trees and its impact can be identified by observing the condition of the crown. The aim of this study is to correlate the variables of crown density (Cdn), crown transparency (Ctr) and dieback (Cdie) with the following vegetation indices: the normalized difference vegetation index (NDVI), enhanced vegetation index (EVI), blue-normalized difference vegetation index (BNDVI), green-normalized difference vegetation index (GNDVI), green–red vegetation index (GRVI) and red–green–blue vegetation index (RGBVI) of the crowns of trees located in urban green areas, as well as chlorophyll fluorescence (Fv/Fm) as an indirect indicator of the overall tree health condition. A total of 549 trees were evaluated, represented in 24 families, 36 genera and 53 species; the variables had average values of 67.96% for Cdn, 35.19% for Ctr and 1% for Cdie. Correlations were found between Fv/Fm, NDVI and BNDVI. NDVI and BNDVI correlated with variables such as Cdn and Ctr, mainly in species such as Ligustrum lucidum, Jacaranda mimosifolia and Fraxinus uhdei. Therefore, it is possible to evaluate the tree health condition of trees in urban green environments through the identification of unfavorable conditions at the crown level by using vegetation indices for some of the species studied.

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Section: Discussionmentioning

confidence: 99%

Section: Evaluation Of Crown Variablesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tree Health Condition in Urban Green Areas Assessed through Crown Indicators and Vegetation Indices

Morales-Gallegos,

Martínez-Trinidad,

Hernández-de la Rosa

et al. 2023

Forests

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“…En este trabajo se detectó una baja diversidad de especies. Zaragoza et al (2014) evaluaron la salud del arbolado con el indicador de condición de copa de árboles de tres parques de la Ciudad de México en las alcaldías Iztacalco, Azcapotzalco y Coyoacán. Guzmán et al (2011) En este reto por conocer e implementar medidas de gestión del arbolado urbano en nuestra ciudad, el diagnóstico fitosanitario es una de las herramientas más eficaces, ya que el conocer el número de ejemplares con daño permite determinar aquellos beneficios ambientales, sociales y económicos que ofrecen.…”

Section: Antecedentes Y Justificaciónunclassified

Evaluación del estado ecológico y fitosanitario de las comunidades arbóreas en áreas verdes de la Ciudad de México

Puente Martínez

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Al amor de mi vida: mi hermano Omar. Resumen.Los enormes problemas de degradación ambiental y la presión a la que se ven sometidos los recursos naturales hoy en día son evidentes; se advierte, por ejemplo, en la pérdida de áreas verdes (AV), cuya evaluación de calidad requiere considerar aspectos de su estructura espacial, como el tamaño, la forma, distribución y distancia entre fragmentos, así como la estructura y funcionamiento de los ensambles biológicos que albergan y el entorno demográfico y socioeconómico de la población que hace uso de ellas. El objetivo de este trabajo fue evaluar y comparar el estado ecológico y fitosanitario de las comunidades arbóreas de ocho áreas verdes de la Ciudad de México, en conjunto con otras variables espaciales, socioeconómicas y demográficas. Se propone un índice multivariado de funcionalidad de las áreas verdes, que facilitaría la implementación de posibles soluciones para su gestión, mejoramiento y recuperación. Este índice está basado en trece variables, integradas en modelo lineal definido por un análisis de componentes principales centrado y estandarizado. La ordenación de las AV a lo largo de los gradientes extraídos correspondería a su arreglo de acuerdo con su calidad y funcionalidad. Se definieron cuatro categorías de funcionalidad: baja, media-baja, media-alta y alta. Siete de los ocho parques estudiados tienen una funcionalidad media-baja. La Alameda Central y el parque Amistad México Japón son las AV más y menos funcionales, respectivamente. El índice propuesto podría aplicarse a cualquier área verde de la Ciudad de México y, eventualmente, de cualquier ciudad. Se considera que la mejor estrategia, dadas las condiciones de la Ciudad de México, es la recuperación de las actuales AV, a través de distintos aspectos, siendo el aumento de la diversidad y densidad vegetal junto con un estricto control fitosanitario los más importantes.

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Effect of pruning, fertilization and pesticide injection on crown dieback in urban trees in Colombia: Analysis of factors involved

Giraldo-Charria

Hurtado

Uribe

2019

Rev. Fac. Nac. Agron. Medellín

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This research evaluated the effect of pruning, fertilization and pesticide injection on crown dieback in urban trees in Colombia and analyzed the factors involved. Systemic insecticides and/or fungicides were applied through injections in the trunk of 15 tree species affected by the progressive deterioration of the crown in the urban forests of the Metropolitan Area of the Aburrá Valley. The presence of progressive deterioration was evaluated qualitatively on a scale from zero to three in an average sample of 12 individuals for each species. Two treatments were used: i) application of insecticide + fungicide, and ii) application of insecticide, both treatments were applied three times, plus a general treatment of pruning and fertilization. Also, two controls were evaluated: healthy trees and diseased trees without treatment. The probability of individual progressive deterioration (PD) during the study period according to the species, treatment applied, and the initial state of affectation was estimated using a generalized linear mixed model. The analysis of factors involved also included planting site, traffic flow of the site, the wood density of the species, and time. The results suggest that the deterioration is a dynamic phenomenon associated with environmental stresses caused mainly by the climatic variability. From the evaluated variables, the species seems to be the most determinant factor for the affectation, since intrinsic variables of the species, like wood density, can favor its appearance. On the contrary, the treatments evaluated did not affect the recovery of the species. The action of insects and pathogens seems to be opportunistic once trees are affected.

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Indicador condición de copa y su aplicación en tres parques del Distrito Federal

Cited by 5 publications

References 7 publications

Tree Health Condition in Urban Green Areas Assessed through Crown Indicators and Vegetation Indices

Tree Health Condition in Urban Green Areas Assessed through Crown Indicators and Vegetation Indices

Evaluación del estado ecológico y fitosanitario de las comunidades arbóreas en áreas verdes de la Ciudad de México

Effect of pruning, fertilization and pesticide injection on crown dieback in urban trees in Colombia: Analysis of factors involved

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