Relation between reflectance of rice crop and indices of pollution by heavy metals in soils of albufera natural park (Valencia, Spain)

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1993 Spain English Publisher:Elsevier BVJournal:Soil Technology, volume 6, pages 351-363 (issn: 0933-3630,

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Authors: Boluda, Rafael; Andreu Pérez, V.; Gilabert, M. A.; Sobrino, P.;

doi: 10.1016/0933-3630(93)90025-a

handle: 10261/48831

Relation between reflectance of rice crop and indices of pollution by heavy metals in soils of albufera natural park (Valencia, Spain)

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Abstract

The aim of the research was to relate the spectral response of rice to heavy metal concentration in soil of Albufera Natural Park. The spectral observations were values of the crop reflectance obtained from the Landsat-5 Thematic Mapper NIR and Red bands expressed by the Normalized Difference Vegetation Index, NDVI. Soil samples of the surface 20 cm were analyzed for total and extractable heavy metal content. The strongest correlations between NDVI and heavy metal in soil were found between the available fractions of Ni, Pb, Cd, Cu and Zn and the toxicity index, Zn equivalent, defined by Zn Eq = (1xZn)+(2xCu)+(8xNi) where metal concentrations are in mg per kg of soil.

13 páginas, 3 figuras, 4 tablas, 1 foto.

Peer reviewed

Country

Spain

Related Organizations

Spanish National Research Council
Spain
University of Valencia
Spain

Keywords

Contamination indexes, Mediterranean wetland, Heavy metals, NDVIs, Rice farming soils

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