Resumo

RODRIGUEZ MORENO, Víctor Manuel; RUIZ CORRAL, José Ariel; PADILLA RAMIREZ, José Saúl  e  SILVA SERNA, Mario Marín. Spatial mapping of soil salinity through remote sensing. Case study of northern Tamaulipas. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.spe13, pp.2577-2587. ISSN 2007-0934.

Knowing the state of the art of salt content in the soil in production systems under irrigation at regional level is a growing need given its upward trend. Through a spectral index derived from Landsat images, the dynamics of soil salinity over a period of 20 years was mapped; for this cloud-free images at regular intervals of five years were selected. Spectral data were obtained from reflectance ratio, a measure through which the amount of radiant energy reflected by surface contact is obtained. There was evidence on upward trend of salt content in the soil in the study area. Also identified some biotic communities that during the period under study remained stable regarding salt content in soil: mesquite and scrub; the results suggest to delineate a strategic improvement plan to revert the increasing trend of salt content in the soil that covers the topics of: improvements in drainage systems, incorporation of crop residues in the soil, use of tolerant materials, and productive reconversion.

Palavras-chave : salinity index; salts in soil; GIS; mesquite; agricultural practices.

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