Dasometric and morphometric analysis of a secondary forest from Permanent Measurement Plots

In the present reserach work the dasometric and morphometric parts of the Universidad Nacional Agraria de la Selva’s forest reserve (BRUNAS – acronym in Spanish) were measured through the use of permanent plots (PPM – acronym in Spanish); located in the city of Tingo Maria which belongs to the Huanuco region of Peru. In order to do this, two permanent plots, each one acre in size, were created for the measurements (PPMs N° I and IV); all of the trees with DBH (D.A.P. in Spanish) ≥ 10 cm were measured. The surface area was 100 x 100 m, made up of twenty five 20 x 20 m sub-parcels at different altitudes. It was within a total area of 217,22 ha that has been cataloged as a protected area, with the goal of conserving and protecting the fauna, floral, water, soil and biological diversity resources. It was found that PPM N° I and IV had based areas of 24,26 m2/ha and 32,92 m2/ha, average quadratic diameters of 23,45 cm and 27,87 cm, and volumes of 180,44 m3 and 274 m3; with respect to the forest potential, both plots were categorized as excellent since they have volumes superior to 150 m3. At the same time, the results that were obtained for the species with the hightest the canopy percentages within both plots (PPM N° I and IV), were Warszewiczia coccinea with 85,71% and Sapium laurifolium with 84,62%, respectively. The species with the highest values in vital space were Rauvolfia sprucei with 53,93 and Naucleopsis krukovii with 60,66. The species with the highest values for the canopy indices were Ormosia amazónica with 2,90 and Sapium laurifolium with 3,37 within the PPM N° I and IV plots. The highest values for canopy coverage within PPMs I and IV were Neea divaricata and Tetragastris panamensis with 0,86 and 0,75, respectively. The slenderest species were Trattinnickia aspera and Schefflera morototoni with 160 and 166,44, respectively; while the species with the greatest stability in both plots were Myrcia fallax and Coussapoa orthoneura, with 20,37 and 26,6, respect
En el presente trabajo de investigación se analizaron la parte dasométrico y morfométrico del Bosque Reservado de la Universidad Nacional Agraria de la Selva – BRUNAS, a través de parcelas permanentes de medición - PPM, en la ciudad de tingo maría perteneciente a la Región de Huanuco, para ello se ejecutó dos parcelas permanentes de medición de una hectárea cada una (PPMs N° I y IV), donde se evaluaron todos los árboles con D.A.P>= 10 cm, con una superficie de 100 x 100 m, conformado por 25 sub parcelas de 20 x 20 m. en diferentes altitudes, siendo catalogado como zona intangible, con la finalidad de conservar y proteger los recursos de fauna, flora, agua, suelo y diversidad biológica, con una extensión total de 217,22 ha. Encontrando un área basal en la PPM N° I y IV de 24,26 m2/ha y 32,92 m2/ha, un diámetro cuadrático medio de 23,45 cm y 27,87 cm, volumen de 180,44 m3 y 274 m3, con respecto al potencial forestal ambas parcelas son catalogados como excelente ya que cuentan con un volumen superior a 150 m3. Asimismo, los resultados obtenidos para ambas parcelas en porcentaje de copa con valores más altos en la PPM N° I y IV, fueron la Warszewiczia coccinea con 85,71% y Sapium laurifolium con 84,62% respectivamente. El espacio vital con valores altos fueron Rauvolfia sprucei con 53,93 y Naucleopsis krukovii con 60,66. El índice de copa con valores más altos fue Ormosia amazónica con 2,90 y Sapium laurifolium con 3,37 en la PPM N° I y IV. El manto de copa para las PPMs I y IV, los valores mal altos fueron Neea divaricata y Tetragastris panamensis con 0,86 y 0,75 respectivamente. Las especies de menor esbeltez, fueron la Trattinnickia aspera y Schefflera morototoni con 160 y 166,44 respectivamente, mientras que las especies mayor estabilidad en ambas parcelas fueron Myrcia fallax y Coussapoa orthoneura con 20,37 y 26,6 respectivamente.