Data/hora: 12/06/2024 16:26:22

Provedor de dados: 	70	
País: 	Brazil	
Título: 	Mapping of use and occupation of the soil and irrigation water quality in the city of Salto do Lontra-Paraná, Brazil	
Autores: 	Wrublack,Suzana C.; Mercante,Erivelto; Vilas Boas,Marcio A.	
Data: 	2013-10-01	
Ano: 	2013	
Palavras-chave: 	Global Navigation Satellite Systems - GNSS; Geographic Information Systems - GIS; Irrigation.	
Resumo: 	The objective of this study consisted on mapping the use and soil occupation and evaluation of the quality of irrigation water used in Salto do Lontra, in the state of Paraná, Brazil. Images of the satellite SPOT-5 were used to perform the supervised classification of the Maximum Likelihood algorithm - MAXVER, and the water quality parameters analyzed were pH, EC, HCO3-, Cl-, PO4(3-), NO3-, turbidity, temperature and thermotolerant coliforms in two distinct rainfall periods. The water quality data were subjected to statistical analysis by the techniques of PCA and FA, to identify the most relevant variables in assessing the quality of irrigation water. The characterization of soil use and occupation by the classifier MAXVER allowed the identification of the following classes: crops, bare soil/stubble, forests and urban area. The PCA technique applied to irrigation water quality data explained 53.27% of the variation in water quality among the sampled points. Nitrate, thermotolerant coliforms, temperature, electrical conductivity and bicarbonate were the parameters that best explained the spatial variation of water quality.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000500014	
Editor: 	Associação Brasileira de Engenharia Agrícola	
Relação: 	10.1590/S0100-69162013000500014	
Formato: 	text/html	
Fonte: 	Engenharia Agrícola  v.33 n.5 2013	
Fonte: 	info:eu-repo/semantics/openAccess