Sea level rise effects on acidic pollution in a coastal acid sulphate soil area
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.
Main Authors: | Phong, N.D., Hoanh, Chu Thai, To Phuc Tuong, Wassmann, Reiner |
---|---|
Format: | Conference Paper biblioteca |
Language: | English |
Published: |
2014
|
Subjects: | sea level, salinity, acidity, water pollution, coastal area, acid sulphate soils, deltas, canals, models, |
Online Access: | https://hdl.handle.net/10568/67595 http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_223.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Managing acidic pollution in a coastal area in Mekong River Delta, Vietnam: case study of Bac Lieu Province [Abstract only].
by: Ngo, P., et al.
Published: (2013) -
Modelling acidity propagation in a coastal zone with acid sulphate soils
by: Phong, N.D., et al.
Published: (2007) -
Impact of sea level rise on submergence, salinity and agricultural production in a coastal province of the Mekong River Delta, Vietnam [Abstract only].
by: Ngo, P., et al.
Published: (2013) -
Water management for agricultural production in a coastal province of the Mekong River Delta under sea-level rise
by: Phong, N.D., et al.
Published: (2015) -
Sea level rise effects on acidic pollution in a coastal acid sulphate soil area
by: Phong ND, et al.
Published: (2014)