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forest after » forest cover (Expander búsqueda), forest andes (Expander búsqueda), forest fuel (Expander búsqueda)
fires » firmes (Expander búsqueda), aires (Expander búsqueda)
forest after » forest cover (Expander búsqueda), forest andes (Expander búsqueda), forest fuel (Expander búsqueda)
fires » firmes (Expander búsqueda), aires (Expander búsqueda)
1
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...
2
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...
3
tesis de grado
Publicado 2021
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Universidad Nacional Agraria La Molina. Facultad de Ciencias Forestales. Departamento Académico de Manejo Forestal
4
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...
5
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 ...
6
tesis de grado
Publicado 2021
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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...
7
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 ...
8
artículo
Publicado 2018
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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...
9
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...
