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forestal fires » forest fires (Expander búsqueda), forestal ficus (Expander búsqueda), forestales fire (Expander búsqueda)
1
artículo
Publicado 2023
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As per the latest survey produced by the Forest Survey, the forest cover is 19.27% of the geographic area. According to this report every country can meet the human needs of 16% of the world’s population from the 1% of the world’s forest resource. The Forest Survey said that 90% of the forest fires created by humans. They pose a threat not only to the forest wealth but also this leads to the main threat to biodiversity, a change in the ecosystem. The environment gets dry and twinges, which leads to produce flames in the forest. There are two types of forest fire i) Surface Fire and ii) Crown Fire iii) Ground Fire. Surface Fire: The forest fire starts its flame primarily as a surface fire, spreading along the ground with the help of dry grasses and so on. Crown Fire: It starts flame on the crown of the shrubs, bushes and trees and sustained on the surface. This type of fire is very da...
2
artículo
Publicado 2019
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Los incendios en el sotobosque representan una amenaza cada vez mayor para los bosques tropicales amazónicos y pueden, durante el período de la sequía, afectar a zonas más extensas que la propia zona deforestada. Estos incendios matan a los árboles a ritmos que varían de < 10 a 90%, dependiendo de la intensidad del fuego, el historial de perturbación del bosque y los rasgos funcionales del árbol. Aquí, examinamos la variación en el espesor de las cortezas en el Amazonas. La corteza puede proteger a los árboles del fuego, pero se asume que con mayor frecuencia son sistemáticamente más delgadas en los bosques tropicales. Aquí, mostramos que la inversión en corteza varía, con una corteza más gruesa en los bosques secos y más delgadas en los bosques húmedos. Se muestra que una corteza más delgada se traduce en una mayor mortalidad por incendio en los bosques más húmedos...
3
artículo
Publicado 2016
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Fire is an important element in the development of ecosystems, however when it is spread out of control in areas such as forests and woodlands, the negative effects to the environment and ecosystems are considerable. The Natural Protected Area of Flora and Fauna of Maderas del Carmen (ANPFFMC) is no exception, so the main objective of this work was mapping the rate of forest fuel from the forest of conifers of the ANPFFMC, through the estimation of dead fuels and the burden of the organic layer. 22 conglomerates were sampled, the vegetation was delimited through the classification of a Landsat-8 satellite image. The results allowed mapping the rate of risk of forest fire through the statistical interpolation method “spline with barriers” generating a barrier of the supervised image interpolation. The average values obtained for 1 hour fuels were 1.22 t-ha-1, to 5.24 hours t-ha-1, for...
4
tesis de grado
Publicado 2025
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Forest fires are one of the main problems that affect biodiversity and forest heterogeneity, which are caused by human or natural activities and even driven by climate change. The objective of this study was to analyze the severity of forest fires with the NBR index (Normalized Burn Ratio) in highland areas of Peru, and evaluate the vegetative recovery of forest species in the affected area with the NDVI index (Normalized Difference Vegetation Index). As a result, it was obtained that the type of vegetation in the affected area is the Andean Pajonal, the level of severity in the study area ranges from low to moderately high, with low severity being the predominant one, which occupies 57,562% of the study area. The NDVI evaluation of 2 weeks before, 2 weeks after and 3 months after the event show that there is a vegetative regeneration of the vegetation cover, two weeks after the event in...
5
artículo
Publicado 2023
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Forest fires are a potential threat to life, as they contribute to reducing forest areas, impact on the services we expect from ecosystems, the health of the inhabitants is affected by smoke and the economic costs for the recovery of affected areas is high. The objective of the study is to apply fuzzy logic to model the risk of forest fires in the Cajamarca-Peru region, incorporating variables that represent biological, topographic, socioeconomic, and meteorological factors. The analysis was based on the acquisition, editing and rasterization of the database, application of fuzzy membership functions and image fuzzification, fuzzy superposition and spatial reclassification of forest fire risk. The results obtained show that 71.68% of the area is under very low or medium forest fire risk. However, 28.32% of the study area has a high to very high fire risk, which makes the occurrence of fi...
6
artículo
Publicado 2022
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Los factores ambientales influyen de forma positiva o negativa para el establecimiento de la regeneración natural de pinos, los cuales pueden estar ligados con los incendios forestales. Por lo tanto, el objetivo del presente estudio fue determinar las variables ambientales que influyen en el establecimiento de la regeneración natural de pinos en áreas impactadas bajo tres condiciones de severidad de incendios (sin incendio, incendio moderado e incendio extremo) en bosques de pino-encino (Pinus lumholtzii B. L. Rob. & Fernald, Pinus devoniana Lindl., Pinus oocarpa Scheide, Quercus castanea Née, Quercus magnoliifolia Née) en el Estado de Jalisco (México). Para esto se evaluaron distintos parámetros de regeneración natural: arbolado, combustibles vivos y muertos en sitios circulares de ~400 m2. Con los datos obtenidos se realizaron análisis de correlación para identificar las ...
7
artículo
Publicado 2025
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On February 2 and 3, 2024, the conurbation of the Province of Valparaíso, Chile, was affected by a catastrophic megafire. In this context, the article presents the results of a qualitative study with an exploratory-descriptive approach, aimed at analyzing the event from the perspective of the contribution of wildland-urban interface zones to the occurrence of the disaster. The findings show that the wildland-urban interface zones of the Valparaíso conurbation constituted a powerful fuel load that increased the territory’s vulnerability to the megafire. This vulnerability was exacerbated by high temperatures, low humidity, and strong winds, resulting in a high destructive potential that reached an unprecedented level of devastation. There is a high risk that such an event will recur in the territory, given the structural geographic conditions that favor the presence of wildland-urban ...
8
tesis de grado
Publicado 2017
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Universidad Nacional Agraria La Molina. Facultad de Ciencias. Departamento Académico de Ingeniería Ambiental, Física y Meteorología
9
artículo
Publicado 2018
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The low natural regeneration of the Brazil nut (Bertholletia excelsa) in the Madre de Dios region of Peru is a major concern for the conservation and sustainable use of this species which sustains one of the cornerstone non-timber forest product economies in Amazonia. The Brazil nut is a gap-dependent, long-lived pioneer species that has been shown to regenerate more effectively in fallows than in mature forests. Aside from light and nutrient availability, recruitment success of the species might also be influenced by conspecific negative distance-dependent (CNDD) processes as shown for a myriad of other tropical tree species, but to date has not been studied in the Brazil nut. We measured Brazil nut recruitment in forty 150 × 10 m2 transects (totaling 6 ha), proportionally laid out in mature forest and fallow land. We found a higher likelihood of regeneration in fallows than in...
10
artículo
The prevailing wet climate in the western Amazon is not favorable to the natural occurrence of fires. Nevertheless, the current process of clearing of humid forests for agriculture and cattle ranching has increased the vulnerability of the region to the spread of fires. Using meteorological stations precipitation and the Moderate Resolution Spectroradiometer (MODIS) Active-Fires (AF) during 2000-2009, we show that fire anomalies vary closely with July-August-September (JAS) precipitation variability as measured by the Standardized Precipitation Index (SPI). The precipitation variability is, in turn, greatly determined by sea surface temperature (SST) anomalies in the North Tropical Atlantic (NTA). We develop a linear regression model to relate local fire activity to an index of the NTA-SST. By using seasonal forecasts of SST from a coupled model, we are able to predict anomalous JAS fire...
11
artículo
Publicado 2019
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This project and manuscript were partially supported by Universidad Autonóma de Barcelona (UAB), Spanish Ministerio de Economia y Competitividad (MINECO) through a Ramon y Cajal agreement (RYC-2016-21120), Cienciactiva-CONCYTEC (concession contract number 236-2015-FONDECYT), and the Life project “LIFE13 BIO/ES/000094”. Our thanks also to Andreu Colom, María Puig, Santiago Lavín, and “El Brunet” farm for their collaboration in laboratory and field works.
12
artículo
Few floristic inventories and even less syntaxonomical vegetation descriptions of tropical mountain forests exist. The author presents a syntaxonomical treatment of the vegetation of Reserva Biológica of San Francisco at the northern limit of Podocarpus National Park, Ecuador, together with notes on the corresponding soil types. The Lower Montane Forest (1800-2150 m), grouped in the new order Alzateetalia verticillatae, has a very diverse tree layer 20-35 m tall, and are a typical mosaic-climax. It grows on Terric Haplosaprists and Aquic Dystrupepts, developed from old landslide material and extends up to elevations of 2300 m at the bottom of wind-protected riverine valleys. At altitudes from 2100-2650 m (–2750 m), the forest structure and floristic composition change completely. The vegetation types belonging to this Upper Montane Forest form the newly described Purdiaeaetalia nutant...
13
artículo
Few floristic inventories and even less syntaxonomical vegetation descriptions of tropical mountain forests exist. The author presents a syntaxonomical treatment of the vegetation of Reserva Biológica of San Francisco at the northern limit of Podocarpus National Park, Ecuador, together with notes on the corresponding soil types. The Lower Montane Forest (1800-2150 m), grouped in the new order Alzateetalia verticillatae, has a very diverse tree layer 20-35 m tall, and are a typical mosaic-climax. It grows on Terric Haplosaprists and Aquic Dystrupepts, developed from old landslide material and extends up to elevations of 2300 m at the bottom of wind-protected riverine valleys. At altitudes from 2100-2650 m (–2750 m), the forest structure and floristic composition change completely. The vegetation types belonging to this Upper Montane Forest form the newly described Purdiaeaetalia nutant...
14
tesis de grado
Publicado 2022
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En Perú, un aliado para contrarrestar los incendios forestales es la identificación de puntos vulnerables ante un posible siniestro. El objetivo de esta investigación fue diagnosticar mediante los sistemas de información geográfica, el estudio del riesgo y prevención de incendios forestales en áreas naturales protegidas de Cuzco. El ámbito de análisis estuvo conformada por 6 áreas naturales protegidas, de las cuales se obtuvieron mapas de calor mediante el programa de software libre Qgis en su versión 3.16.8, con radios específicos según su extensión de terreno. Los resultados expresan la identificación de puntos vulnerables ante un posible incendio forestal ubicándolos geográficamente dentro del radio definido, identificándolos con el rango de color según la matriz de riesgos del Manual para la Evaluación de Riesgos del Centro Nacional de Estimación, Prevención y R...
15
artículo
Publicado 2025
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On February 2 and 3, 2024, the conurbation of the Province of Valparaíso, Chile, was affected by a catastrophic megafire. In this context, the article presents the results of a qualitative study with an exploratory-descriptive approach, aimed at analyzing the event from the perspective of the contribution of wildland-urban interface zones to the occurrence of the disaster. The findings show that the wildland-urban interface zones of the Valparaíso conurbation constituted a powerful fuel load that increased the territory’s vulnerability to the megafire. This vulnerability was exacerbated by high temperatures, low humidity, and strong winds, resulting in a high destructive potential that reached an unprecedented level of devastation. There is a high risk that such an event will recur in the territory, given the structural geographic conditions that favor the presence of wildland-urban ...
16
artículo
Publicado 2019
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Amazon tropical forests and the semiarid Northeast Brazil (NEB) region have registered very severe droughts during the last two decades, with a frequency that may have exceeded natural climate variability. Severe droughts impact the physiological response of Amazon forests, decreasing the availability to absorb atmospheric CO2, as well as biodiversity and increasing risk of fires. Droughts on this region also affect population by isolating them due to anomalous low river levels. Impacts of droughts over NEB region are related to water and energy security and subsistence agriculture. Most drought episodes over Amazonia and NEB are associated with El Niño (EN) events, anomalous warming over the Tropical North Atlantic (TNA), and even an overlapping among them. However, not all the dry episodes showed a large‐scale pattern linked to a canonical EN event or warm TNA episodes. For instance...
17
artículo
Publicado 2021
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1. Forest landscape restoration (FLR) has gained momentum globally and guidance is needed to identify those species, sites and planting methods that increase restoration success. Incorporating native Non-Timber Forest Product (NTFP) species in FLR approaches provides an opportunity to simultaneously deliver ecological and economic benefits. The Brazil nut tree is one of the most valuable Amazonian NTFP species and could fulfil a cornerstone role in Amazon FLR. However, the factors defining establishment success within Brazil nut restoration activities remain unknown. 2. Here, we evaluate the effect of management practices, restoration site (pastures, agroforestry, secondary forest and canopy gaps in old growth forest) and environmental conditions on the establishment success (tree growth, survival and fruit production) of Brazil nut restoration projects implemented by smallholders in the...
18
tesis de grado
Publicado 2021
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Universidad Nacional Agraria La Molina. Facultad de Ciencias Forestales. Departamento Académico de Manejo Forestal
19
artículo
Publicado 2007
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[ES] la Región Ucayali es una de las más afectadas por los procesos de deforestación y degradación a causa principalmente de actividades agropecuarias y extractivistas. Estas actividades utilizan frecuentemente la quema como una forma de control de malezas, manejo de pasturas y limpieza del área para la siembra de cultivos, lo que ha originado cambios significativos en la vegetación local. El estudio que se describe objetiva caracterizar la composición florística y la dinámica postquema en parcelas afectadas por el fuego. Como parte de un ensayo instalado por el proyecto INIA· CIFOR "Adaptabilidad de seis especies forestales nativas en áreas degradadas por la agricultura" en terrenos de agricultores de la zona de Nueva Requena, las parcelas de evaluación (seis de 40 m x 40 m cada una ) se localizaron en los tres tipos principales de vegetación invasora que resultan de difere...
20
artículo
Publicado 2007
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[ES] Se muestran los avances y desafíos de investigación en la temática de rehabilitación de áreas de degradadas (RAD) en la Amazonia Peruana, con énfasis en la región Ucayali. Se realizó un diagnóstico del acervo científico/tecnológico que rescata los esfuerzos para revertir las tierras degradadas hacia su uso como bosque, con base en la síntesis de una veintena de investigaciones, la mayor parte concluyentes, pero escasamente difundidas. los principales resultados fueron analizados en retrospectiva critica, identificando vados y pronosticando los lineamientos estratégicos que señalen la agenda pendiente. El avance en la investigación básica emprendida fue significativo y se subrayan los esfuerzos realizados en condiciones de suelos laterizados, con vegetación herbácea invasora, alta frecuencia de incendios e incluso con población proclive a actividades ganaderas. Baj...
