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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
Publicado 2023
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This research was carried out in the forestry nursery of the National University of the Peruvian Amazon, located in the city centre of Puerto Almendras, in San Juan de Miraflores District, Iquitos city, Loreto department, in order to determine the time that it can be preserved in its natural state, germination period, degree of survival and mortality of germinated seedlings. According to the obtained results, it can be indicated that the average weight of seeds of the species Anaueria brasilienses kost after seed collection is 0.69 kg and the weight after 60 days of drying in the open air is 0.45 kg. The number of seeds per kg after collection is 15 seeds and after drying in the open air it increases between 20 and 22 seeds per kilogram. The humidity percentage after 60 days reaches 35%. The germnation of scarified seeds of the species begins 50 days after sowing and ends at 61 days, the...
6
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 ...
7
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...
8
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 ...
9
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...
10
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...
11
tesis de grado
Publicado 2012
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With aimed at quantifying the carbon stored in forest timber species and its contribution to the environment in the forest of the Pabloyacu Research and Production Center, there was calculated the air biomass of the stem of the individuals found in 20,000 m2. There were valued 460 trees contained in four blocks to which the DAP measured up in the species to more than 10 m of diameter; then the species were labelled and put up signs evaluated; the measure of minimal DAP registered was 10,19 cm and the maxim 59,21 cm, and the minimal height of the arboreal species they were 3 m and maximum of 20 m. From the information obtained in the biometric phase (DAP) using the corresponding formulae, there was obtained that, the total quantity of vegetable major biomass was registered in Himatanthussucuuba " Knave caspi " by 7,803 TnC/ha, while in minor quantity in Nectandrareticulada "Moena" with 2....
12
artículo
Publicado 2019
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In recent years, the car park in Tacna’ city has increased, as well as the emission of polluting gases such as carbon dioxide (CO2) generated by different types of vehicles, mainly those of public transport in the city of Tacna. The research work was aimed at determining the carbon capture as an environmental service through the palm trees that are in the Bolognesi avenue, Industrial avenue and surroundings. For this purpose, the document Identification of existing methodologies to determine carbon stock in forest ecosystems of the Environment’s Ministry (MINAM) was used. Carbon estimation in tree biomass was chosen using the non - destructive - direct method, which consists of estimating of the biomass with dasometric data which were taken in the field. The study was carried out between June and October of 2016, in which two strata of palm trees were determined that are exposed to a...
13
tesis de grado
Publicado 2019
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La presente investigación se llevó a cabo en el ámbito de la confluencia de los ríos Mayo y Huallaga, donde se ubicaron tres estaciones de monitoreo: Rmayo1, Rhual1 y Rhual2, para la evaluación de parámetros físico-químicos y microbiológicos, a fin de determinar la influencia de la descarga del río Mayo, en la calidad de agua del río Huallaga, en el periodo comprendido entre los meses de octubre a diciembre del 2018, cuyas concentraciones variaron entre: pH (6.6 y 7.88), temperatura (24.5°C y 26.4°C), conductividad (232 μS/cm y 312 μS/cm), Oxígeno Disuelto (6.28 mg/L y 7.04 mg/L), DBO5 (valores inferiores a <2.60 mg/L), SST (29 mg/L y 2890 mg/L), Nitratos (0.062 mg/L y 0.994 mg/L), Fosforo total (0.115 mg/L y 0.503 mg/L) y Coliformes termotolerantes (130 NMP/100ml y 16000 NMP/100ml); así mismo se calculó el ICA-PE, obteniendo un valor de 71.84 (calidad regular) en Rmayo...
14
tesis de grado
Publicado 2017
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This research work was carried out in the facilities of MADERAS ACASIA SAC primary transformation plant owened by Mr. Elias Cruzado, which is located in the town of San Jóse de Cochiquinas, in Pevas district, Mariscal Ramón Castilla province, Loreto department; with the purpose of determining the behavior of the preserved cumala (virola sp.) to natural drying on the trestle. The results show us that the initial moisture content is 102%, an average final moisture contento f 17% reaching an equilibrium moisture content after air drying stacked on a trestle is 17% in 70 days of drying. The highest percentage od defects is due to cracks, which amounts to 2.07%, followed by cracks 1.49%, twists 1.22%, bends 0.96% and other defects 0.62%, with the yield of the Cumala sawn Wood after drying in the open air was 96.64% and defective Wood was 6.36%. According to these results, the preserved cuma...
15
tesis de grado
Publicado 2024
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Universidad Nacional Agraria La Molina. Facultad de Ciencias Forestales. Departamento Académico de Industrias Forestales
16
tesis de grado
Publicado 2023
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Universidad Nacional Agraria La Molina. Facultad de Ciencias Forestales. Departamento Académico de Industrias Forestales
17
tesis de grado
Publicado 2023
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Universidad Nacional Agraria La Molina. Facultad de Ciencias Forestales. Departamento Académico de Industrias Forestales
