Quality of shallow groundwater and drainage water in irrigated agricultural lands in a Mediterranean coastal region of Turkey

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Tarih

2006

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Springer

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

Spatial and seasonal differences in water quality of drainage water and unconfined shallow groundwater were related to irrigation in Samanda. g, a Mediterranean coastal region. Eighteen wells, seven drainage points and Orontes River were monitored bimonthly for one year for analyses of electrical conductivity (EC), total dissolved solids (TDS), sodium adsorption ratio (SAR), cations (Na, K, Ca + Mg) and anions (CO3, HCO3, Cl and SO4). Agricultural irrigation using saline groundwater decreased water quality of Orontes River during the irrigation season ( May to September) more than during the non-irrigation season ( October to April). Seasonal fluctuations in water quality of shallow groundwater were greater during the irrigation season than the non-irrigation season in the study area. Excessive use of groundwater resulted in a decline in the water table levels in the irrigation season. Water table level rose up to the soil surface in areas where there was a lack of drainage or poor drainage, due to the impact of precipitation in the winter. SAR and pH values of drainage water increased in the irrigation season, while the other properties of drainage water decreased. Irrigation water quality of Orontes River was classified as C3S1 in both seasons. Irrigation water quality of shallow groundwater and drainage water varied from C2S1 to C4S2 in one year. Drainage and well waters were found to be different on yearly basis in terms of Na, SAR (p < 0.01) and Ca + Mg concentrations (p < 0.001). Ca + Mg concentrations for both sources were different for all sampling dates (p < 0.001).

Açıklama

Anahtar Kelimeler

drainage water, shallow groundwater, irrigation, water quality, water table levels

Kaynak

Environmental Monitoring and Assessment

WoS Q Değeri

Q3

Scopus Q Değeri

Q2

Cilt

115

Sayı

1-3

Künye