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https://locus.ufv.br//handle/123456789/25717
Tipo: | Artigo |
Título: | Soil organic matter fractions under eucalypt plantation in reform management |
Autor(es): | Soares, Emanuelle Merces Barros Teixeira, Rafael da Silva Sousa, Rodrigo Nogueira de Vasconcelos, Aline de Almeida Silva, Ivo Ribeiro da |
Abstract: | Harvesting and reform in eucalyptus can lead to changes in soil organic matter (SOM). The objective of this work was to evaluate the changes in total organic C (TOC) and N (NT), C and N in humic acid (HA), fulvic acid (FH), light organic matter (LOM) and microbial biomass (MB), in Ultisol of eucalypt stands over one, two and four years of renovated areas in Rio Grande do Sul state. After the first year of eucalyptus reform, there were 78% of increases in TOC (0.0-1.0-m soil layer). After two years, there was an increase in TN and an average reduction of 52% in LOM-C (0.0-0.1-m soil layer). FA-C, HA-C, and HU-C presented mean reductions of 43 Mg ha–1 (0.0-1.0-m soil layer) after four years of reform. The litter contribution of previous crop and the crop residues from the harvest resulted in increments of the SOM fractions. However, there is a negative effect in later years. |
Palavras-chave: | Orest soils Reform Humic substances Microbial biomass Light organic matter |
Editor: | Floresta e Ambiente |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1590/2179-8087.069417 http://www.locus.ufv.br/handle/123456789/25717 |
Data do documento: | 2019 |
Aparece nas coleções: | Solos - Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf | artigo | 1,44 MB | Adobe PDF | Visualizar/Abrir |
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