Resumen

MANZUR CHAVEZ, Nancy et al. Aboveground and root biomass in sapling stage of Abies religiosa (Kunth) Schltdl. & Cham. in Hidalgo state. Rev. mex. de cienc. forestales [online]. 2025, vol.16, n.87, pp.28-47.  Epub 26-Mayo-2025. ISSN 2007-1132.  https://doi.org/10.29298/rmcf.v16i87.1503.

The initial development of the forest is known as sapling. At this stage the regeneration density is high, so the biomass accumulation rate is higher. In this context, the objective of estimating the total biomass storage capacity (aboveground-root) in trees in the initial stage of Abies religiosa in El Chico National Park, Hidalgo state, was raised. Four sampling sites of 100 m2 were established to obtain population density. 52 specimens less than 1.5 m in height and 5 cm in average base diameter were extracted with roots; a high-pressure water backpack sprayer was used to detach the soil from the root; later the plant material was placed in a drying oven at 80 °C until reaching constant weight. Results indicate that the fir trees in the sapling stage formed the basic group (height 6 to 65 cm) with 72.6 % of aboveground biomass and 27.4 % of root biomass, and another developed group (height 68 to 150 cm), with 75.8 and 24.2 % of aboveground and root biomass, respectively. The biomass stored in the fir forest in the sapling stage was 103.6 kg ha-1, with potential accumulation of aboveground/root biomass in a 3:1 ratio in canopy gaps, which favored the establishment of natural regeneration. The ratio of root biomass to aboveground biomass in the sapling stage changes with age in Abies religiosa trees.

Palabras llave : Natural Protected Area; aboveground biomass; root biomass; sapling; fir; natural regeneration.

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