A dinâmica físico-química de solos de florestas de mangue em Sergipe, Nordeste do Brasil

• Ano de defesa: 2013
• Autor(a) principal: Andrade, Karen Viviane Santana de
• Orientador(a): Holanda, Francisco Sandro Rodrigues
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Programa de Pós-Graduação: Pós-Graduação em Agroecossistemas
• Palavras-chave em Português: Nutrientes; Metais pesados
• Palavras-chave em Inglês: Mangues florestais; Solos (composição); Solos (formação); Solos; Físico-química (análise); Química do solo; Mangrove forest; Soil chemistry; Soil formation; Soils; Nutrients
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
• Link de acesso: https://ri.ufs.br/handle/riufs/6562

Brazilians Mangroves have a great ecological importance, and are very importants to the survival of coastal communities that use natural resources of this ecosystem for their food and income generation. Over the years various human actions and the dynamics of this ecosystem, has encourage studies that provide a better understanding of the peculiarities of this environment. The study on the soils of mangroves are important because shows the strong influence on the distribution and degree of species development, maintaining a direct relationship with the intake of marine and river sediments. The objective of this study was to evaluate the physical and chemical characteristics of the soil in two mangrove forests located in estuarine areas of the São Francisco River and Sergipe. In each estuary were selected two (02) sites for data collection, called stations, divided into three (03) forest types (fringe, basin and transition) and collected five (05) samples consisting of 0.5 kg of soil at each sample point. In the laboratory, soil samples were subjected to chemical and physical analyzes, including pH. The soil of the estuary of the São Francisco had a sandy texture, with high amounts of organic matter and concentration of macro and micronutrients in the following order of concentration: Mg2+> Na2+>Ca2+>H+ > K+> P3-> Al3+ e Fe2+> Zn2+> Cu2+> Mn2+, respectively, with variations between woods and stations. Introducing generally, high fertility, especially in forests basin confirmed by the development of vegetation, noting a trend zoning species in relation to the fertility of the soil. The estuary of the Sergipe River presented a more silty texture and nutrient levels of macronutrients according to the following concentrations: Mg2+> Na2+> Ca2+> H+> K+> P3-> Al3+ e Fe2+> Zn2+> Cu2+> Mn2+. Both estuaries have high fertility and vegetation well developed.