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| Author | Alexakis, D.; Gotsis, D.; Giakoumakis, S. | ||||
| Title | Evaluation of soil salinization in a Mediterranean site (Agoulinitsa district—West Greece) | Type | Journal Article | ||
| Year | 2015 | Publication | Arabian Journal of Geosciences | Abbreviated Journal | |
| Volume | 8 | Issue | 3 | Pages | 1373-1383 |
| Keywords | Agricultural soil . Soil quality . Soil salinization | ||||
| Abstract | Soil salinization is an environmental problem having significant impacts on the soil–water–plant system. This problem is more frequent in coastal areas due to seawater intrusion into the land. Assessing the soil salinization is a critical issue for the agricultural areas situated in the Mediterranean basin. This paper examines the deterioration of soil quality in the cultivated land of a Mediterranean site (Agoulinitsa district—West Greece). Soil samples were collected in both pre-irrigation and post-irrigation seasons. Electrical conductivity (EC), pH and the ions Br−, Ca2+, Cl−, F−, K+, Li+, Mg2+, Na+, NH4 +, NO2 −, NO3 −, PO4 3− and SO4 2− were determined by the 1:2 (soil/water ratio on weight basis) method. The salts which were present in both seasons in the soils of the area studied are KCl, MgCl2, NaCl, CaSO4 and K2SO4. The wide spatiotemporal variation of EC in the cultivated land in both seasons demonstrates that soil salinity is controlled mainly by seawater intrusion and anthropogenic factors such as the application of salt-rich water which is directly pumped from the drainage ditches. Seawater intrusion provides the affected soil with elevated contents of Ca2+, Cl−, K+, Mg2+, Na+ and SO4 2−. Classification of the soils by using criteria given by the literature is discussed. Practices to prevent, or at least ameliorate, salinization in the cultivated land of Agoulinitsa district are proposed. |
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| Publisher | Springer | Place of Publication | Editor | ||
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| ISSN | 1866-7511 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | THL @ luqianxue.zhang @ Alexakis2015 | Serial | 42 | ||
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| Author | Bouzourra, H.; Bouhlila, R.; Elango, L.; Slama, F.; Ouslati, N. | ||||
| Title | Characterization of mechanisms and processes of groundwater salinization in irrigated coastal area using statistics, GIS, and hydrogeochemical investigations | Type | Journal Article | ||
| Year | 2015 | Publication | Environmental Science and Pollution Research | Abbreviated Journal | |
| Volume | 22 | Issue | 4 | Pages | 2643-2660 |
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| Publisher | Springer | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number | THL @ luqianxue.zhang @ bouzourra2015characterization | Serial | 78 | ||
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| Author | Edwards, P.J.; Williard, K.W.J.; Schoonover, J.E. | ||||
| Title | Fundamentals of watershed hydrology | Type | Journal Article | ||
| Year | 2015 | Publication | Journal of contemporary water research & education | Abbreviated Journal | |
| Volume | 154 | Issue | 1 | Pages | 3-20 |
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| Publisher | Wiley Online Library | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number | THL @ luqianxue.zhang @ edwards2015fundamentals | Serial | 101 | ||
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| Author | Pearce, C.R.; Parkinson, I.J.; Gaillardet, J.; Chetelat, B.; Burton, K.W. | ||||
| Title | Characterising the stable (δ88/86Sr) and radiogenic (87Sr/86Sr) isotopic composition of strontium in rainwater | Type | Journal Article | ||
| Year | 2015 | Publication | Chemical Geology | Abbreviated Journal | |
| Volume | 409 | Issue | Pages | 54-60 | |
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| Publisher | Elsevier | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number | THL @ luqianxue.zhang @ pearce2015characterising | Serial | 96 | ||
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| Author | Han, D.; Post, V.E.A.; Song, X. | ||||
| Title | Groundwater salinization processes and reversibility of seawater intrusion in coastal carbonate aquifers | Type | Journal Article | ||
| Year | 2015 | Publication | Journal of Hydrology | Abbreviated Journal | |
| Volume | 531 | Issue | Pages | 1067-1080 | |
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| Abstract | Seawater intrusion (SWI) has led to salinization of fresh groundwater reserves in coastal areas worldwide and has forced the closure of water supply wells. There is a paucity of well-documented studies that report on the reversal of SWI after the closure of a well field. This study presents data from the coastal carbonate aquifer in northeast China, where large-scale extraction has ceased since 2001 after salinization of the main well field. The physical flow and concomitant hydrogeochemical processes were investigated by analyzing water level and geochemical data, including major ion chemistry and stable water isotope data. Seasonal water table and salinity fluctuations, as well as changes of δ2H–δ18O values of groundwater between the wet and dry season, suggest local meteoric recharge with a pronounced seasonal regime. Historical monitoring testifies of the reversibility of SWI in the carbonate aquifer, as evidenced by a decrease of the Cl− concentrations in groundwater following restrictions on groundwater abstraction. This is attributed to the rapid flushing in this system where flow occurs preferentially along karst conduits, fractures and fault zones. The partially positive correlation between δ18O values and TDS concentrations of groundwater, as well as high NO3− concentrations (\textgreater39mg/L), suggest that irrigation return flow is a significant recharge component. Therefore, the present-day elevated salinities are more likely due to agricultural activities rather than SWI. Nevertheless, seawater mixing with fresh groundwater cannot be ruled out in particular where formerly intruded seawater may still reside in immobile zones of the carbonate aquifer. The massive expansion of fish farming in seawater ponds in the coastal zone poses a new risk of salinization. Cation exchange, carbonate dissolution, and fertilizer application are the dominant processes further modifying the groundwater composition, which is investigated quantitatively using hydrogeochemical models. | ||||
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| Publisher | Elsevier | Place of Publication | Editor | ||
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| ISSN | 0022-1694 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | THL @ christoph.kuells @ Han2015 | Serial | 24 | ||
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