Artículo
Temporal and spatial changes in soil micronutrients in managed Nothofagus pumilio forest of Tierra del Fuego, Argentina
Mansilla, Paula Romina
; Nóvoa Muñoz, Juan Carlos; Pontevedra Pombal, Xabier; Pancotto, Veronica Andrea
; Gómez Aarmesto, Antía; Escobar, Julio Martin
; Moretto, Alicia Susana
Fecha de publicación:
05/2016
Editorial:
Springer Verlag
Revista:
Environmental Earth Sciences
ISSN:
1866-6280
e-ISSN:
1866-6299
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Soil organic components are important factors in the quality and productivity of forest ecosystems. Timber harvesting reduces plant cover and the amount of organic matter in forest floor layer, increases surface runoff, soil erosion and alters microclimatic conditions over large areas. These changes can have important implications for nutrient cycling dynamics and soil organic matter mineralization. Fueguian temperate forests of Nothofagus pumilio (lenga) have been intensely harvested for the last decades, mainly by shelterwood-cut silvicultural system. Harvesting removes nutrients contained in logs from the site, modifies light, temperature and soil humidity, constraining nutrient cycling process. In this study, we evaluate available copper (Cua), zinc (Zna), iron (Fea), and manganese (Mna) concentrations and reservoirs in stands that represent a chronosequence and their respective primary forests (controls): stands cut 1 year ago, stands cut 5–10 years ago, and stands harvested more than 50 years ago. Concentrations of Zna and Cua in primary forest were 39.9 and 2.6 mg/kg, and increased in harvested sites to 60.5 and 3.2 mg/kg, respectively. Fea and Mna concentrations showed similar ranges in both harvested and control sites. Recent harvested sites showed the highest Cua concentrations. Micronutrient reservoirs showed similar ranges in both harvested and primary forests. We concluded that micronutrient availability changes at short term after forest harvesting; thus, the inclusion of soil fertility assessment in forest management plans should be incorporated to preserve the fertility of lenga forests soils and ensure sustainability.
Palabras clave:
COPPER
,
LENGA TEMPERATE FORESTS
,
SHELTERWOOD-CUT SILVICULTURAL SYSTEM
,
ZINC
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CADIC)
Articulos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Articulos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Citación
Mansilla, Paula Romina; Nóvoa Muñoz, Juan Carlos; Pontevedra Pombal, Xabier; Pancotto, Veronica Andrea; Gómez Aarmesto, Antía; et al.; Temporal and spatial changes in soil micronutrients in managed Nothofagus pumilio forest of Tierra del Fuego, Argentina; Springer Verlag; Environmental Earth Sciences; 75; 9; 5-2016; 738-746
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