Artículo
Trends in nutrient reservoirs stored in uppermost soil horizons of subantarctic forests differing in their structure
Peña Rodríguez, Susana; Moretto, Alicia Susana
; Pontevedra Pombal, Xabier; Oro Castro, Natalia Patricia
; Garcia Rodeja Gayoso, Eduardo; Rodriguez Salgado, Isabel; Rodriguez Racedo, José; Escobar, Julio Martin
; Nóvoa Muñoz, Juan Carlos
Fecha de publicación:
07/2013
Editorial:
Springer
Revista:
Agroforestry Systems
ISSN:
0167-4366
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Macro- (C, N, P, K, Ca and Mg) and micronutrient (Fe, Mn, Cu and Zn) reservoirs were estimated in the O (Oi+Oe+Oa) and in the A (0–10 cm depth) soil horizons of four stands of Nothofagus pumilio (lenga) from Tierra del Fuego which differ in their forestry characteristics. The type of soil layer (O and A) and the forest structure, as related to above-ground biomass storage, were assessed as a factor of variation in the nutrient reservoirs of both soils layers. Nutrient reservoirs showed similar ranges in both soil layers for total organic C (34–65 Mg ha−1), total N (1.5–3.5 Mg ha−1), rapidly available Ca (1.3–2.7 Mg ha−1) and Mg (0.18–0.36 Mg ha−1). Rapidly available K, available P, and medium-term available Fe and Cu were accumulated preferentially in A the horizons, whereas medium-term available Mn and Zn were mainly stored in the O horizons. The forest structure was not a statistically significant factor of variation on the nutrient reservoirs in the O horizons, although a legacy effect of the accumulated above-ground biomass on nutrient reservoirs in this soil layer can not be discarded. On the contrary, the pools of total organic C, total N, rapidly available K and medium-term available Cu and Zn in the A horizons varied significantly with the different forest structure. In terms of lenga forests sustainability, uppermost soils layers should be preserved as they accumulate most of the soil fertility which is essential for lenga regeneration after logging. The inclusion of the assessment of soil fertility in the management plans of the lenga forests in the ecotone of the Argentinean Tierra del Fuego is strongly recommended, as it will contribute to ensure a successful regeneration of lenga in logged areas.
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Articulos(CADIC)
Articulos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Articulos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Citación
Peña Rodríguez, Susana; Moretto, Alicia Susana; Pontevedra Pombal, Xabier; Oro Castro, Natalia Patricia; Garcia Rodeja Gayoso, Eduardo; et al.; Trends in nutrient reservoirs stored in uppermost soil horizons of subantarctic forests differing in their structure; Springer; Agroforestry Systems; 87; 6; 7-2013; 1273-1281
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