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Soil Surface Salt Accumulation Phenomena Dominated by Shallow Groundwater Fluctuations under Arid and Semi-Arid Climate

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저자정보
(The University of Tokyo, Japan) (The University of Tokyo, Japan) (The University of Tokyo, Japan)
저널정보
한국토양비료학회 한국토양비료학회 학술발표회 초록집 20th WORLD CONGRESS OF SOIL SCIENCE
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545 - 545 (1page)
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Soil Surface Salt Accumulation Phenomena Dominated by Shallow Groundwater Fluctuations under Arid and Semi-Arid Climate
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    초록·키워드

    Shallow groundwater tables and associated salinity problems have become dominant features in agricultural areas around the world. There have been numerous studies on groundwater associated salinity but more information is required on the effects of groundwater frequent and high fluctuations on soil salinization. In the present study, field investigations in salt affected areas in South Tunisia (Metouia oasis), laboratory experiments and numerical simulations using HYDRUS-1D model were carried out for this purpose. Field investigations showed that in such arid and semi-arid environments with saline shallow groundwater tables, the capillary rise of water and salts from the groundwater to the soil surface seems to be a major contributor to salt accumulation within soil profile. Metouia Oasis was subject to a high measurement frequency based assessment (30 minutes interval) of shallow groundwater fluctuation from March to November 2009. The resulted hydrograph showed a dynamic groundwater le ... 전체 초록 보기

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