Responding to rising sea levels in the Mekong Delta

A. Smajgl (), T. Q. Toan, D. K. Nhan, J. Ward, N. H. Trung, L. Q. Tri, V. P. D. Tri and P. T. Vu
Additional contact information
A. Smajgl: CSIRO Land & Water Flagship
T. Q. Toan: Southern Institute for Water Resource Research
D. K. Nhan: Mekong Delta Development Research Institute, Can Tho University
J. Ward: CSIRO Land & Water Flagship
N. H. Trung: Dragon Institute, Can Tho University
L. Q. Tri: Dragon Institute, Can Tho University
V. P. D. Tri: Dragon Institute, Can Tho University
P. T. Vu: Dragon Institute, Can Tho University

Nature Climate Change, 2015, vol. 5, issue 2, 167-174

Abstract: Abstract Vietnamese communities in the Mekong Delta are faced with the substantial impacts of rising sea levels and salinity intrusion. The construction of embankments and dykes has historically been the principal strategy of the Vietnamese government to mitigate the effects of salinity intrusion on agricultural production. A predicted sea-level rise of 30 cm by the year 2050 is expected to accelerate salinity intrusion. This study combines hydrologic, agronomic and behavioural assessments to identify effective adaptation strategies reliant on land-use change (soft options) and investments in water infrastructure (hard options). As these strategies are managed within different policy portfolios, the political discussion has polarized between choices of either soft or hard options. This paper argues that an ensemble of hard and soft policies is likely to provide the most effective results for people’s livelihoods in the Mekong Delta. The consequences of policy deliberations are likely to be felt beyond the Mekong Delta as levels of rice cultivation there also affect national and global food security.

Date: 2015
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DOI: 10.1038/nclimate2469

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