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    Sea level rise effects on acidic pollution in a coastal acid sulphate soil area

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    Authors
    Phong ND
    Hoanh, Chu Thai
    Tuong TP
    Wassmann, Reiner
    Date
    2014
    Language
    en
    Type
    Conference Proceedings
    Accessibility
    Open Access
    Metadata
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    Citation
    Phong ND, Hoanh CT, Tuong TP, Wassmann R. 2014. Sea level rise effects on acidic pollution in a coastal acid sulphate soil area. In: Ames DP, Quinn NWT, Rizzoli AE, (Eds.) 2014. Proceedings of the 7th International Congress on Environmental Modelling and Software, June 15-19, San Diego, California, USA.
    Permanent link to cite or share this item: https://hdl.handle.net/10568/68160
    External link to download this item: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_223.pdf
    Abstract/Description
    Bac Lieu is a coastal province the Mekong River Delta (MRD), Vietnam. Aside from salinity intrusion from the sea, the province is strongly affected by acidic pollution as 58% of the area (250,000 ha) is overlaid with acid sulphate soil (ASS). Previous studies showed that the eminent sea level rise (SLR) would influence the hydrology and salinity of the canal networks in the province. This study, using the previously validated hydraulic and water quality model VRSAP-ACIDITY (Vietnam River Systems And Plains, coupled with ACIDITY Module), aimed at quantifying impacts of different SLR scenarios (SLR = 17, 30, 50, or 75 cm) on acidic pollution in the province. Under the present sea level, widespread acidic pollution (pH < 5) of surface water occurred at the start of the rainy season, due to leaching of acidity from canal embankments and fields in ASS. The acceleration of SLR reduced the area of acidic polluted water. The lessening in acidic pollution was attributed to (1) SLR that raised the water level in the Mekong River, increasing the amount of fresh water flowing into the study area; and (2) the amount of water drained out of the study area increased, bringing with its acidity. It concluded that SLR has a positive effect on acidic pollution in the ASS coastal area.
    CGIAR Affiliations
    Climate Change, Agriculture and Food Security
    AGROVOC Keywords
    CLIMATE CHANGE; AGRICULTURE; FOOD SECURITY; SEA LEVEL; SALIDITY; ACIDITY
    Subjects
    CLIMATE-SMART TECHNOLOGIES AND PRACTICES;
    Countries
    VIETNAM
    Regions
    ASIA; SOUTHEAST ASIA
    Collections
    • Synthesis, Education, Outreach [242]

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