Taxa de decomposição da folhagem de Croton sonderianus em função da forma de acondicionamento e sua posição em relação ao solo

Detalhes bibliográficos
Ano de defesa: 2011
Autor(a) principal: Furtado, Francisca Mirlanda Vasconcelos
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Não Informado pela instituição
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://www.repositorio.ufc.br/handle/riufc/15613
Resumo: The research was conducted to evaluate the decomposition of leaves of marmeleiro (Croton sonderianus), depending on the shape and arrangement of the packing material in the soil in the dry and rainy seasons. The experiment was conducted at the Fazenda Experimental Vale do Acaraú, where two areas were selected with 1 ha each. One area showed the preserved vegetation and other anthropogenic area suffered. Were placed 30 g of leaves of marmeleiro in 72 bags of decomposition (which were made with mesh screened from No. 0 to 30 cm x 30 cm) which were divided into three treatments: bags with both free surfaces (A); bags with the top surface protected by a transparent plastic (B), bags with the top surface protected by white canvas (C). The experimental design was completely randomized in a factorial arrangement of 3 x 2 x 2 x 2, and 3 types of bags x 2 x 2 locations x 2 seasons, with three replications. Was measured at ambient temperature, maximum and minimum soil temperature and the moisture present in it, and solar radiation. Decomposition rates were obtained by real equation, in which there was the subtraction of the initial percentage of plant biomass by the amount remaining in the bags at the end of each season. The form of packaging material, the positions in which they were as well the influence of the seasons and their abiotic characteristics, influence the rate of decomposition of leaves of marmeleiro, with higher rates of degradation occur in the preserved during the rainy season.