ISBN 978-93-5547-570-1 (Print)
ISBN 978-93-5547-571-8 (eBook)
DOI: 10.9734/bpi/mono/978-93-5547-570-1


Nowadays, the scientific discoveries about the influence activities of humans, about phenomena such as the greenhouse effect, ozone depletion, bipolar melting, and sea-level rise making flood salted the coastal wet-land, drought or contrary, pouring rain. The extraordinary climate and extreme weather, the warming of the Earth crust ... collectively known as Climate Change (CC).

Climate Change comes from the increasing emissions of greenhouse gases into the atmosphere. The 4th scientific report (2007) of the Inter-governmental Panel on Climate Change (IPCC) showed that the CO2 concentration reached 397 ppm (parts per million of volume) in 2005 and now is reaching 450 ppm; with an increased average concentration of 1,4 ppm per year between 1960-2005 and 1,9 ppm per year from 1995 to 2005, now about 2,0 ppm.

Scientists suppose that the phenomenon of global warming is happening worldwide. The statistics of the world average temperature show that in the last 600 years, the temperature has only started to increase gradually over 1 century -meaning, it started in the 1900s, at the same time as the industrial revolution. More and more scientists are convinced that the Earth is warming due to human-made. Climate Change (CC) will cause the Sea Level Rise (SLR) to higher and higher, in accompaniment with drought, gale, and exhausted rivers, which inevitably causes saline intrusion (SI). Deeper into the fields for low-lying areas.


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Drought, Sulphate Acidifications & Saline Intrusion in Mekong Delta, Caused by the Hydro-Electric Dams in Upstream of River, and Climate Change

Ba Le Huy, Hoan Nguyen Xuan, Hung Le, Nam Thai Van , Phong Nguyen Tan, Thanh Le Minh

Drought, Sulphate Acidifications & Saline Intrusion in Mekong Delta, Caused by the Hydro-Electric Dams in Upstream of River, and Climate Change, 11 April 2022, Page 1-287
https://doi.org/10.9734/bpi/mono/978-93-5547-570-1

The causes of drought, alum, and saltwater intrusion in the Mekong Delta, Vietnam are The hydro-electric dams (China, Laos, Thailand), mainly in China. The total amount of water that they block accounts for over 65% of the Mekong River basin water resources. The mainstream of the Mekong flows downstream, causing the river to dry up, traffic difficulties, lack of water to irrigate rice fields, and lack of water for people's livelihood, especially in the dry season. But lack of water has caused great harm: Sulfate acidification and salinization become very high. Because this is the Wetland, young. On the soil horizon, there are 3 Layers: 0-20cm: New alluvium; layer 20-50 cm: Jarosite layer: sediments of Fe, Al double sulfate; Floor 50-150 cm: Pyrite with a very high concentration of S (>5%). Drought will make the acidification process more intense. At the same time, drought creates conditions for tidal infiltration to a depth of 70-100km, causing salinization; plants cannot tolerate salt concentrations <4g/L. The damage to the Mekong Delta is enormous.