Details

Autor(en) / Beteiligte

• Rodríguez Martín, J.A.
• Ramos-Miras, J.J.
• Boluda, R.
• Gil, C.

Titel

Spatial relations of heavy metals in arable and greenhouse soils of a Mediterranean environment region (Spain)

Ist Teil von

• Geoderma, 2013-06, Vol.200-201, p.180-188

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2013

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• This study characterises and compares Cr, Ni, Pb, Cu, Zn and Cd (HMs) contents and the main edaphic parameters in arable soils (AS) from western areas of the Andalusian Autonomous Community (SE Spain) with greenhouse soils (GS) from the province of Almería, one of the most productive agricultural systems in Europe. We explored 199 GS and 142 AS, representing local and regional scales of variation in this important Mediterranean area. The hazardousness of HMs was particularly relevant in GS where agricultural practices, which centre on maximising production, end up with products that finally enter the human food chain directly. Despite their similar edaphic characteristics, the main differences between AS and GS were nutrients and HM contents such as P, K, Cd, Pb and Zn, suggesting the widespread use of agrochemicals in greenhouse farming. Cd concentration in GS tripled that in AS. Here, we conclude that despite anthropogenic HM input, the association patterns of these elements were similar on the two spatial variability scales. Cd, Pb and Zn contents, and partly those of Cu, were related with agricultural practices. On the short spatial scale, grouping these HMs gave very high contents in GS. The associations found with Cr and Ni suggest a lithogenic influence combined with a paedogenic effect on spatial maps; this natural origin input becomes more marked on the long spatial scale represented by AS, where the main Cr and Ni contents were found in the vicinity of Mountain areas not influenced by human activities. •Geostatistical analysis showed HM metal associations in arable and greenhouse soils.•We examined changes in the level of information on arable and greenhouse soils.•P and K levels reflect the use of agrochemicals in greenhouse soils.•Anthropic influence is clearly observed in Cd, Pb and Zn soil contents.•Spatial patterns found significant differences in territorial localisation.