Spatial variability of depth and salinity of groundwater under irrigated ustifluvents in the Middle Black Sea Region of Turkey
- 19 November 2008
- journal article
- Published by Springer Science and Business Media LLC in Environmental Monitoring and Assessment
- Vol. 158 (1-4), 279-294
- https://doi.org/10.1007/s10661-008-0582-1
Abstract
Information on the potential risk for soil salinity buildup can be very helpful for soil salinity management in irrigated areas. We evaluated the spatial and temporal variability of groundwater salinity (GWS) and groundwater depth (GWD), which are two of the most important indicators of soil salinity, by indicator kriging technique in a large irrigated area in northern Turkey. GWS and GWD were measured on a monthly basis from irrigation season (August 2003) to rainy season (April 2004) at 60 observation wells in the 8,187-ha irrigated area. Five indicator thresholds were used for GWS and GWD. The semivariogram for each of the thresholds for both variables was analyzed then used together with experimental data to interpolate and map the corresponding conditional cumulative distribution functions (CCDF). Risk for soil salinity buildup was greater in the irrigation season compared to that in the rainy season. The greatest risk for soil salinity buildup occurred in the eastern part of the study area, suffering from poor drainage problem due to malfunctioning drainage infrastructure, as indicated by the CCDF of GWS and GWD obtained in both seasons. It was concluded that a combination of mechanical and cultural measures should be taken in high-risk locations to avoid further salinity problems.Keywords
This publication has 16 references indexed in Scilit:
- Ordinary multigaussian kriging for mapping conditional probabilities of soil propertiesGeoderma, 2006
- Spatial variation of soil water content in topsoil and subsoil of a Typic UstifluventAgricultural Water Management, 2005
- Mapping risk of cadmium and lead contamination to human health in soils of Central IranScience of The Total Environment, 2005
- Spatial variability of shallow groundwater level, electrical conductivity and nitrate concentration, and risk assessment of nitrate contamination in North China PlainEnvironment International, 2005
- Mapping risk of soil nutrient deficiency or excess by disjunctive and indicator krigingGeoderma, 2004
- Evaluation of arsenic contamination potential using indicator kriging in the Yun-Lin aquifer (Taiwan)Science of The Total Environment, 2003
- Comparing Ordinary Kriging and Cokriging to Estimate Infiltration RateSoil Science Society of America Journal, 2003
- Assessment of spatial variability in nitrate leaching to reduce nitrogen fertilizers impact on water qualityAgricultural Water Management, 2001
- Modelling soil variation: past, present, and futureGeoderma, 2001
- Soil Salinity Modeling over Shallow Water Tables. II: Application of LEACHCJournal of Irrigation and Drainage Engineering, 2000