Resumo

DELGADO VARGAS, Iván Andrés et al. Carbon stock quantification of Morella pubescens (H. & B. ex Willd.) Wilbur in two agroecosystems, Nariño, Colombia. Colomb. for. [online]. 2016, vol.19, n.2, pp.209-218. ISSN 0120-0739.  https://doi.org/10.14483/udistrital.jour.colomb.for.2016.2.a06.

The carbon stored in radical biomass of Morella pubescens (Humb. & Bonpl. ex Willd.) Wilbur, was quantified, in San Pablo, Nariño, Colombia, with height of 2010 m, average annual rainfall of 1300 mm and average temperature of 17ºC. Three experimental unites: silvopastoral system pasture alley cropping (Ac) in two planting distances 4x3m and 4x4m, and natural regeneration system (Rn), 7 individual ware taken by experimental unite with (diameters 5 - 7 cm), by experimental unit, the sample was taken to 70 cm and 140 cm from the tree and three depths (0-15, 15-30, and 30-45 cm). In total 24 simples/trees were taken in 21 selected individuals. The mayor quantity of radical biomass and C stock was presented in the Ac arrangement 4x3 m of 27.6 t.ha^-1 (14.1 t.C.ha^-1); 24 4 t.ha^-1 (12.1 t.C.ha^-1) distance 4x4 m and 7.5 t.ha^-1 and 2.9 t.ha^-1In natural regeneration. In system Ac distance 4x4 m there were not differences in C stored by tree Rn, there was a decrease by 4x3 m, thus, the differences of accumulation between the systems, can obey to the density of the sowing.

Palavras-chave : Radical biomass; carbon, Morella pubescens; alley cropping; natural regeneration.

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