Título:	Operações de álgebra de mapas em sistema de informações geográficas para estimativa da aptidão agrícola das terras.
Autor:	HAMADA, E. ASSAD, M. L. L. PEREIRA, D. A. BOSCHI, R. S.
Afiliación:	Emilia Hamada, Embrapa Meio Ambiente; Maria Leonor Lopes Assad, UFSCar; Danilla Alves Pereira, Embrapa Meio Ambiente; Raquel Stuchi Boschi, UFSCar.
Año:	2007
Referencia:	In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 13., 2007, Florianópolis. Anais... São José dos Campos: INPE, 2007. p.2713-2720.
Descripción:	The land suitability evaluation is used to establish land zonings for agriculture. Geographic information systems (GIS) are useful for integrating different attributes necessaries to define apt and not apt lands. In tropical environment, soil fertility and water availability for cultures are very important in agricultural systems management. The present study had as main objective to describe procedures to define land suitability using GIS, soils maps, and data soils profiles data, emphasizing procedures to define fertility deficiency and water deficiency. Numerical terrain models (NTM) had been construct for cation exchange capacity, basis saturation, clay content and silt+clay content using kriging (geostatistical interpolator), and for aluminum saturation using the inverse-square-distance. Boolean operations for handling geographic fields (thematic maps and NTM) to produce information plans are described
Thesagro:	Solo
Palabras clave:	SGI GIS
Tipo de Material:	Artigo em anais e proceedings
Acceso:	openAccess
Aparece en las colecciones:	Artigo em anais de congresso (CNPMA)