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Título

Salinization levels of soil and water in a mediterranean coastal wetland: the pego-oliva marsh (Spain)

Autor Gimeno-García, Eugenia ; Pascual, Juan Antonio ; Rubio, José Luis ; Andreu Pérez, V.
Fecha de publicación jul-2012
EditorEuropean Confederation of Soil Science Societies
Citación EUROSOIL 2012
ResumenIn the last decades, the increases of the anthropogenic pressure and the related socio-economic development have provoked important changes in Mediterranean coastal wetlands, through drainage for cultivation, construction and development of infrastructures, irrigation systems, etc. These transformations lead to the degradation of this high status ecological habitats (destruction of flooding prairies, riparian habitats and breeding areas), with also important repercussions on soil and water quality. This study is focused on the evaluation of soil and water quality parameters related to salinization in the Pego-Oliva coastal wetland (1250 hectares), a Natural Park in the Valencia Community (Spain), also included in the RAMSAR Agreement. In this area, 46 soi samples from three land uses (rice farming and marsh area, citrus crops and shrubland soils), and 67 water samples form different sources (ditches and irrigation channels, lake, rivers, groundwater) were analysed. The soil and water quality parameters studied were electrical conductivity (EC), sodium and chloride ion concentrations, and sodium form the soil exchangeable complex (ESP). Main results show that 24% of soil samples have EC >4 dS m-1, all of them coming from the rice farming and marsh areas. These soils showed mean ESP of 26.5%, with values up to 78%. However, the other land uses did not exceed the ESP of 5%. Regarding waters, 82% of samples presented EC>2dS m-1, and sodium and chloride concentrations higher than 200 mg L-1 were found in the 85% of samples. Attending their sources, the highest values were obtained from the lake and ditches waters.
Descripción Poster presentado en EUROSOIL 2012 celebrado en Bari (Italia) del 2 al 6 de julio de 2012
URI http://hdl.handle.net/10261/94951
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