Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
Andes
4
Incendios forestales
3
Perú
3
Braun-Blanquet
2
Deforestación
2
Ecuador
2
Forest fires
2
más ...
Buscar alternativas:
forest after » forest cover (Expander búsqueda), firms after (Expander búsqueda), forest fuel (Expander búsqueda)
forest andes » forest trees (Expander búsqueda), forest de (Expander búsqueda)
fires » firmes (Expander búsqueda), aires (Expander búsqueda), firms (Expander búsqueda)
forest after » forest cover (Expander búsqueda), firms after (Expander búsqueda), forest fuel (Expander búsqueda)
forest andes » forest trees (Expander búsqueda), forest de (Expander búsqueda)
fires » firmes (Expander búsqueda), aires (Expander búsqueda), firms (Expander búsqueda)
1
tesis de grado
Publicado 2025
Enlace
Enlace
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...
2
artículo
Publicado 2025
Enlace
Enlace
The use of fire in agriculture has been a fundamental practice since early human societies, playing a key role in land preparation, weed control, and soil fertility management. In the Peruvian Andes, fire remains widely employed by rural communities, despite strict legal prohibitions aimed at reducing wildfire occurrence. However, statistical evidence demonstrates that these punitive policies have failed to curb wildfires, which have instead increased in frequency. This study critically examines the agricultural use of fire in high Andean communities of Cusco, Peru, exploring its socio-cultural, economic, and environmental dimensions. Through ethnographic research and qualitative methodologies, the study identifies the motivations behind fire use, traditional fire-management practices, local and institutional perceptions, and community responses to wildfires. Findings reveal that fire is...
3
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...
4
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...
5
artículo
Fire activity in the Peruvian Andes has increased significantly in recent decades, but climatic parameters associated with drought, which may indirectly contribute to the occurrence of severe forest fires, have not yet been investigated. Because fire prevention tools are scarce, strategies for deterring burning are necessary in order to reduce impacts in regions where forest fires usually result from human activity. This study explores the conditions conducive to forest fire in the Andes of Peru. Daily precipitation and temperature observed data from the PISCO gridded dataset for the 2002–2016 period were used. In addition, MODIS satellite images (MOD09A1 product) were collected to characterise Andean vegetation using spectral indices. Analysis of daily temperature and rainfall indicates that climatic parameters such as cumulative precipitation, dry-day frequency and hot-day frequency ...
6
artículo
Publicado 2021
Enlace
Enlace
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...
7
tesis de grado
Publicado 2021
Enlace
Enlace
Universidad Nacional Agraria La Molina. Facultad de Ciencias Forestales. Departamento Académico de Manejo Forestal
8
artículo
Publicado 2007
Enlace
Enlace
[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...
9
artículo
Publicado 2021
Enlace
Enlace
A set of instruments to measure several physical, microphysical, and radiative properties of the atmosphere and clouds are essential to identify, understand and, subsequently, forecast and prevent the effects of extreme meteorological events, such as severe rainfall, hailstorms, frost events and high pollution events, that can occur with some regularity in the central Andes of Peru. However, like many other Latin American countries, Peru lacks an adequate network of meteorological stations to identify and analyze extreme meteorological events. To partially remedy this deficiency, the Geophysical Institute of Peru has installed a set of specialized sensors (LAMAR) on the Huancayo observatory (12.04◦ S, 75.32◦ W, 3350 m ASL), located in the Mantaro river basin, which is a part of the central Andes of Peru, especially in agricultural areas. LAMAR consists of a set of sensors that are us...
10
artículo
Publicado 2024
Enlace
Enlace
Glacial bodies in the Peruvian Andes Mountains store and supply freshwater to hundreds of thousands of people in central Peru. Atmospheric black carbon (BC) is known to accelerate melting of snow and ice, in addition to contributing to air pollution and the health of people. Currently there is limited understanding on the sources and temporal variability of BC in valley and mountain environments in Peru. To address this problem, this study combined surface observations of BC collected during 2022–2023 with WRF model simulations and HYSPLIT trajectories to analyze the dispersion and sources of BC in valley and high elevation environments and the associated local atmospheric circulations. Results show high BC concentrations are associated with the valley-mountain wind system that occurs on both sides of the Huaytapallana mountain range. A pronounced circulation occurs on the western slop...
11
artículo
Publicado 2023
Enlace
Enlace
In the present study, we determine the presence of the Andean bear Tremarctos ornatus and its interaction with humans in three communal territories of the La Mar province (Ayacucho). Between September and October 2019, we established a total of 22 transects to identify signs of the species, interviewed the local population about their interactions with the bear, and finally inspected livestock carcasses whose deaths were attributed to attacks by the species. In total, 312 signs of the Andean bear were recorded, with the majority being food remains, primarily found in the high puna areas above the montane forests. Local residents are familiar with and have encounters with the Andean bear in the field, and they identified recurring threats to the bear, including grassland fires, timber extraction, and livestock farming. They also reported that bears cause damage to crops and livestock. How...
12
tesis de grado
Publicado 2021
Enlace
Enlace
Universidad Nacional Agraria La Molina. Facultad de Ingeniería Agrícola. Departamento Académico de Ordenamiento Territorial y Construcción
13
tesis de grado
Los incendios forestales afectan al suelo con respecto a sus propiedades físicas, químicas y biológicas; evidenciándose principalmente una degradación intensa, así como la modificación de los valores de concentración de los componentes esenciales para la fertilidad y productividad del recurso, especialmente de nitrógeno total (NT), carbono orgánico (CO) y relación carbono/nitrógeno (C/N). El presente meta análisis tuvo como objetivo analizar el efecto de los incendios forestales en la relación C/N del suelo. En el metaanálisis se estudiaron 5 zonas afectadas por incendios forestales: Huacraruco (2018), El Cañón de Sangal (2018) y La Sierra de Cazorla (2005, 2007 y 2008 respectivamente) con un rango de muestreo no mayor a 8 meses. Se tomaron en cuenta el método de Kjeldahl y de Walkley y Black para determinar NT y CO respectivamente, a partir de la materia orgánica. Se ...
14
tesis de grado
Publicado 2021
Enlace
Enlace
La presente tesis toma en manifiesto la problemática que recae los incendios forestales, la conducta del menor infractor y la justicia juvenil en el Perú. Trabajo de investigación en el que se da a conocer la comisión del ilícito en el que los menores de edad queman generando consecuencias adversas contra el medio ambiente. Es así que se atenta contra el ecosistema. Si bien la actividad del quemado de restos vegetales tiene origen ancestral, este durante mucho tiempo es utilizado con fines diversos, en muchos casos carentes de razonamiento. Los cuales tienen como matiz de realización el perpetrado por los menores de edad. Factores que traducen un aspecto importante para el ámbito regulatorio punitivo, ya que tras la dación de la norma que regula la delincuencia juvenil, se pudo prever en concordancia con el código de los niños y adolescentes, que las medidas tomadas a cabo a a...
15
artículo
Forests department of San Martin, habitat of Platycerium andinum B. is being destroyed disproportionately, caused by anthropogenic activities such as logging, forest fires, migration and changing land use, which has led to the species to which is currently in danger of extinction, adding to it the extraction of the species for its lush beauty for marketing as ornamental plant, also to the spores are difficult to germinate under natural conditions. Also, we do not have a methodology for in vitro propagation of the species. This research aims to determine the appropriate concentration of sodium hypochlorite to obtain spores of Platycerium andinum B., free of pathogens for optimum germination and evaluate three culture media to determine the most suitable medium for the propagation of the gametophytes through in vitro culture. The spores were obtained from fertile fronds of adult plants of ...
16
artículo
Publicado 2018
Enlace
Enlace
The clearing of forests, through agricultural expansion, conversion of forests to pasture, infrastructure development, destructive logging, fires, etc. represent nearly 20% of emissions of greenhouse gases worldwide, more than the entire global transportation sector and second only to the energy sector. Therefore, in order to limit the impacts of climate change within limits that society can tolerate reasonably, global average temperatures must be stabilized within two degrees Celsius. This objective will be virtually impossible to achieve without reducing emissions from the forest sector as well as other mitigation (REDD +). While there are methodologies for monitoring deforestation, most of these methods, if not all, require the user designation of a definition of threshold for classifying and identifying a change in land use from deforestation. Determining thresholds adds significantl...
17
artículo
Publicado 2025
Enlace
Enlace
The high Andean grass Jarava ichu (Poaceae) plays a vital role in water regulation and aquifer recharge. However, its limited use is often linked to forest fires, highlighting the need for sustainable alternatives. Therefore, this study aims to explore the valorization of ichu as a substratefor the cultivation of Pleurotus spp. (P. citrinopileatus, P. djamor and P. ostreatus) and to evaluate the potential of the residual substrate as a biofertilizer, offering an ecological alternative to grassland burning in the Peruvian Andes. Samples of ichu from the district of Tomás (Lima, Peru) were used as culture substrate, analyzing productivity indicators such as crop cycle (CC), biological efficiency (EB) and production rate (PR), together with the nutritional profile of the fungi and the chemical properties of the residual substrate. The results showed an average biological efficiency of 19.8...
18
artículo
Publicado 2025
Enlace
Enlace
The high-Andean grass Jarava ichu (Poaceae) plays a vital role in water regulation and aquifer recharge. However, its limited use is often linked to forest fires, highlighting the need for sustainable alternatives. Therefore, this study aims to explore the valorization of ichu as a substrate for the cultivation of Pleurotus spp. (P. citrinopileatus, P. djamor, and P. ostreatus) and to evaluate the potential of the residual substrate as a biofertilizer, offering an ecological alternative to grassland burning in the Peruvian Andes. Samples of ichu from the district of Tomás (Lima, Peru) were used as culture substrate, analyzing productivity indicators such as crop cycle (CC), biological efficiency (BE), and production rate (PR), together with the nutritional profile of the fungi and the chemical properties of the residual substrate. The results showed an average biological efficiency of 1...
19
capítulo de libro
The last report from the Intergovernmental Panel on Climate Change (IPCC) shows the limited margin we have to adapt to rising global temperature. The last four decades have been the warmest. Peru has been identified as a very vulnerable territory to the effects of climate change. The South American nation has experienced higher temperatures and retrenching glaciers, extreme climatic events, sliding crop yields, pests, floods in the Amazon basin and losses in its marine ecosystem. In addition, persistent inequity in Peru translates into uneven impacts, especially on populations that depend on natural resources for their livelihoods and are most susceptible to such adverse events. The negative effects on health can be direct due to extreme heat, or indirect due to increased exposure to forest fires, the migration of populations resulting from these events, or the transmission of certain di...
