Water security 1.3 Flashcards
What percentage of Vietnamese forest has been cut down?
90
The Manwan dam has reduced Alluvium deposits from…?
45mt to 38mt
Reduction in Mekong river flow into Ton le Sap lake has made it hard for …?
Phnom Penh yo get fresh drinking water
What has led to Mekong Dolphins dying?
Bacterial diseases caused by Mercury and Arsenic released from Lanping Lead-Zinc mine in China
Pesticide run off has caused…
…Algal blooms and outbreak of water lyacinths
Effects of the fall in shrimp and carp production levels in Cuulong Delta impact…
local fishermen
What was removed to allow ferries up river?
Sandbars and Rocks
The removal of sandbars and rocks for ferry movement has caused…
devastating floods
Cultural eutrophication in the river was caused by…
Urban sewage and garbage from Phomn Penh causing a build up in nitrogen and phosphorus
How many people would be affected by the Mekong dams?
60million
Impact on Indigenous peoples?
A series of relatively small dams and diversions has already forced the relocation of thousands of indigenous peoples to sites where there is insufficient land or water. Severe fishery declines have been recorded by many villages
What is transboundary water?
The term “transboundary waters” refers to sources of freshwater that are shared among multiple user groups, with diverse values and different needs associated with water use.
How does water quality effect the quantity
Polluted water that cannot be used for drinking, bathing, industry or agriculture may effectively reduce the amount of water available for use in a given area.
How does water quantity effect the quality
A large quantity of water can be used to ‘flush’ out pollutants as the ratio of pollutants to water would make the pollution insignificant.
Which is more important? Water quality or quantity?
Both affect one another.
