L’agriculture et les risques hydrologiques en zone deltaïque tropicale : Evolution et aménagement d’un milieu fragile, le bassin du fleuve Gianh (Vietnam central)

Abstract : Food shortage related to the changes in land which is used for planning are a current issue, but also a source of controversy. This, particularly, is the case of the Gianh River watershed, located in the Central Region of Vietnam. Indeed, since 1986, this delta of littoral zone has been known for mutations. Rice farming helps to bring job to a large number of the population, is a safety valve against the food shortage because the more farmers, the more food would be produced.This region, on the other hand, is experiencing rapid demographic, urban and economic growth, as a result, it leads to an increase in the demand for food while the agricultural areas tend to be reduced and disappeared. Another effect of this change is the accentuation of the consequences of typhoons with the conjunction of storms, tides and floods of the river. The risk increases because of the demographic concentration in fragile areas, and the concreteization linked to the extension of the city. A problem of food insecurity is likely to appear in the basin if too high densities are combined with the reduction of farming areas and risks. That's why flood management, prevention and protection solutions are proposed to help developers in Vietnam to reduce mentioned risks.
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Huu Duy Nguyen. L’agriculture et les risques hydrologiques en zone deltaïque tropicale : Evolution et aménagement d’un milieu fragile, le bassin du fleuve Gianh (Vietnam central). Architecture, aménagement de l'espace. Université d'Orléans, 2018. Français. ⟨NNT : 2018ORLE1162⟩. ⟨tel-02103673v2⟩

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