O manejo dos resíduos florestais afeta a produção de biomassa e a sustentabilidade de povoamentos de Eucalyptus sp.

Dione Richer Momolli e Mauro Valdir Schumacher

Resumo
O resíduo da colheita florestal serve como fonte de matéria orgânica e nutrientes ao desenvolvimento das futuras rotações, além disso, atua na proteção do solo evitando a erosão, a exposição direta aos raios solares e a compactação, aumentando a capacidade de retenção hídrica. A biota do solo possui o papel de decompor e mineralizar os nutrientes presentes na matéria orgânica. Através desse processo acelera-se a ciclagem dos nutrientes, liberando-os para posterior absorção pelas raízes das árvores. O descascamento da tora a campo é uma forma de manejo que minimiza o percentual de nutrientes exportados. O objetivo dessa revisão bibliográfica é abordar os efeitos do manejo dos resíduos da colheita na produção de biomassa e na sustentabilidade das plantações de eucalipto.

Palavras-chave
Nutrição florestal; Sustentabilidade; Silvicultura.

Abstract
The harvest residue management affects biomass production and sustainability of Eucalyptus sp. stands. The forest harvesting residue serves as a source of organic matter and nutrients to the development of future rotations, besides, it acts in the protection of the soil avoiding the erosion, the direct exposure to the solar rays and the compaction, increasing the capacity of water retention. Soil biota has the role of decomposing and mineralizing the nutrients present in organic matter. This process accelerates the nutrient cycling, releasing them for later absorption by the roots of the trees. Debarking of the stem in field is a form of management that minimizes the percentage of nutrients exported. The objective of this bibliographic review is to address the effects of harvest residue management on biomass production and the sustainability of Eucalyptus stands.

Keywords
Forest nutrition; Sustainability; Forestry.

DOI
10.21438/rbgas.061219

Texto completo
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References
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