Vietnam Dispatch: The Salt Problem
Kate Sheppard is investigating the impacts of climate change in Vietnam. Here, rising sea levels push salt water into freshwater rivers.
The disappearing coastline is one of the most oft-cited concerns about climate change, as rising sea levels gradually chip away at the edge of our terrestrial domain. In Vietnam, that’s certainly a concern, with 2,025 miles of exposed coastline. But more immediately, the rising seas are pushing salty water into freshwater sources like the mighty Mekong River.
The delta is the region of southern Vietnam were the branches of the river reach the sea. Known here as the “Nine Dragons” of the Mekong, the tributaries pass through fertile farmland before emptying into the sea. Salinity intrusion has long been a problem, but as the sea level rises, the salty waters of the South China Sea are traveling farther up the long fingers of the Mekong. The salt poses an immediate threat to much of the agriculture here: rice, coconuts, and other crops. It’s also making it harder for people who live here to access freshwater for drinking, cooking, and bathing.
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