Data/hora: 01/06/2024 15:16:57

Biblioteca(s): | Embrapa Meio Ambiente.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 2
Data corrente: | 04/04/2016
Data da última atualização: | 04/04/2016
Autoria: | CAK, A. D.; MORAN, E. F.; FIGUEIREDO, R. de O.; LU, D.; LI, G.; HETRICK, S.
Afiliação: | ANTHONY D CAK, Indiana University; EMILIO FREDERICO MORAN, Indiana University; RICARDO DE OLIVEIRA FIGUEIREDO, CNPMA; DENGSHENG LU, Indiana University; GUIYING LI, Indiana University; SCOTT HETRICK, Indiana University.
Título: | Urbanization and small household agricultural land use choices in the Brazilian Amazon and the role for the water chemistry of small streams.
Ano de publicação: | 2016
Fonte/Imprenta: | Journal of Land Use Science, Abingdon, v. 11, n. 2, p. 203-221, 2016.
Idioma: | Inglês
Conteúdo: | Many small watersheds and streams in the Brazilian Amazon have been impacted by agriculture and urban development, often due to household economic needs and migration processes. This study examined the relationships between land use, soil type, and household factors on stream water chemistry in and near the city of Altamira, Pará, Brazil, in 2008?2009. While soil weathering and stream discharge may have affected several stream water ion concentrations, agriculture and especially urban development were associated with high dissolved nitrogen concentrations, high water temperatures, and low dissolved oxygen concentrations in streams. Younger interviewed households were generally associated with these watersheds, and many urban residents reported disposing of household waste directly into streams. In contrast, older households were generally associated with forest and cocoa agriculture, along with lower water temperatures and higher dissolved oxygen concentrations in streams. These conditions persisted despite reported uses of herbicides and fertilizers by some residents.
Thesagro: | Bacia hidrográfica; Qualidade da água; Química da água; Urbanização; Uso da terra.
Thesaurus Nal: | Amazonia; Land cover; Streams; Urbanization; Water quality.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (15038-1) - UPC - AP - DD -  -  -  - DIS