The objective of the research was to evaluate the effect of geographic altitude on the carbon stock in two physiographic units of the Reserved Forest of the Universidad Nacional Agraria de la Selva, Tingo Maria-Huanuco. The methodology used was the field manual for the remeasurement and establishment of plots of the Amazon Forest Inventory Network (RAINFOR), for which 2 hectares were permanently established (one hectare in low and high hills) in which the diameter (greater than or equal to 10 cm) and the height of the trees were measured. Finally, the density of the wood was obtained from previous studies. The pantropical model formula was used to estimate the carbon stock. The results show that geographic altitude significantly affects carbon stock (p < 0.05) in low and high-hill forests, concluding that this may be due to differences in meteorological variables such as precipitation, t...

El estudio tuvo como objetivo evaluar la contaminación del aire por partículas sedimentables en domicilios en la zona urbana de la Provincia de Leoncio Prado, Departamento de Huánuco. El tipo de estudio fue transversal y de nivel descriptivo, la muestra estuvo conformada por 12 zonas de monitoreo. Para el diseño del soporte de placas receptoras, la recolección de muestras y cálculos de la concentración de partículas sedimentables se utilizó los procedimientos del Boletín Oficial del Estado de 1976. Los resultados indican que para la zona de la Av. Amazonas fue de 0.372 mg/cm2/mes, Jr. Julio Burga 0.384 mg/cm2/mes, Av. Raymondi 0.430 mg/cm2/mes, Naranjillo Centro 0.478 mg/cm2/mes, Electrocentro 0.633 mg/cm2/mes, Naranjillo Entrada 0.705 mg/cm2/mes, Afilador 0.722 mg/cm2/mes, Av. Raymondi 0.955 mg/cm2/mes, Brisas del Huallaga 0.966 mg/cm2/mes, Castillo Grande Entrada 0.989 mg/cm2...

This study analyzed the impact of leachate from a temporary landfill on soil microbial diversity in Tingo María, Huánuco region, Peru. Three treatments were used: untreated soil (S), addition of stream water (T0), leachate (T1), and leachate treated by coagulation and flocculation (T2), with 828.5 ml/week added in three weekly doses. Soil samples were collected from the Reserved Forest of the Universidad Nacional Agraria de la Selva. Twenty-one randomly distributed soil samples were taken and homogenized for analysis. Soil quality parameters measured included sand, clay, silt, texture, pH, organic matter, nitrogen, phosphorus and potassium. As for microorganisms, viable aerobes, lactobacilli, actinomycetes, fungi, nitrogen-fixing bacteria, and Escherichia coli were quantified using specific culture and counting methods for each of them. To evaluate the impact of the leachate on microbi...