Data/hora: 08/06/2024 11:29:59

Biblioteca(s): 	Embrapa Solos.	
Data corrente: 	08/07/2019	
Data da última atualização: 	08/11/2019	
Autoria: 	PESSOA, L. G. M.; FREIRE, M. B. G. dos S.; ARAUJO FILHO, J. C. de; SANTOS, P. R. dos; MIRANDA, M. F. A.; FREIRE, F. J.	
Afiliação: 	LUIZ GUILHERME MEDEIROS PESSOA, UFRPE; MARIA BETÂNIA GALVÃO DOS SANTOS FREIRE, UFRPE; JOSE COELHO DE ARAUJO FILHO, CNPS; PATRÍCIA RIBEIROS DOS SANTOS, IFPE; MÁRCIO FLÉQUISSON ALVES MIRANDA, IFPE; FERNANDO JOSÉ FREIRE, UFRPE.	
Título: 	Characterization and classification of halomorphic soils in the semiarid region of Northeastern Brazil.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Journal of Agricultural Science, v. 11, n. 4, p. 405-418, 2019.	
DOI: 	10.5539/jas.v11n4p405	
Idioma: 	Inglês	
Conteúdo: 	The properties of halomorphic soils are controlled by the presence of either soluble salts, exchangeable sodium or both, and it is important to know and understand these properties in order to reforest and/or recover the soils. The objective of this study was to characterize and classify halomorphic soils from the semiarid region of Northeast Brazil. Four profiles of halomorphic soils were studied, which were described morphologically and the samples were collected from all soil horizons. Physical and chemical analyzes of the soils were carried out for classification purposes, as well as geochemical speciation of the soluble salts. According to the results, P1 and P3 were classified as Fluvisols, and P2 and P4 as Cambisols. It was observed that the studied soil profiles have the predominance of fine particles, which prevents the leaching and subsequent removal of salts from the soil profile. Soils presented high levels of exchangeable sodium, characterizing them as sodium solids throughout the profile. Ionic speciation analysis indicated the predominance of free forms of Ca2+, Mg2+, Na+ and K+, HCO3-, Cl- and SO42- and combinations of calcium, magnesium and sodium chloride and sulfate salts. Thus, it was possible to conclude that the studied halomorphic soils presented high levels of degradation by salts and sodium and that these types of soils are strongly related to the Fluvisols and Cambisols.	
Thesagro: 	Solo Salino; Solo Sódico.	
Thesaurus Nal: 	Saline soils; Sodic soils; Soil degradation.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/199272/1/2019-026.pdf	
Registro original: 	Embrapa Solos (CNPS)	
Exemplares: 	CNPS - (20167-1) - UPC - AP - DD -  -  - 2019.00085 - DIS