Animal husbandry is contaminating Chinas water and has been linked to turning lakes bright green, a phenomenon known as eutrophication
The farm, located at the end of a narrow grime route, announces its presence with a piercing stench. At first, the caretaker of the collective facility in Kunming says the farm recycles all the animal trash into manure fertiliser. But later, he sheepishly points behind the pigsty.
There, hordes of flies swarm above a festering field of grey-black dung. A few periods a few months, Cai shovels the steaming excrement produced by some 100 swine owned by local families into a nearby creek, where a mile downstream, villagers fish on the rocky shores of a small lake.
The hilltop angling spot feeds into Dianchi Lake in south-western Yunnan province, a major tourist attraction and one of China’s largest fresh water bodies. Dianchi is famous for a number of reasons: its sheer size( nearly 40 km long ), its distinctive” crescent moon” shape and the surround scenic mounds and stone gardens. But it has another distinguishing feature; for several decades, each summer the surface of Dianchi has turned bright green from algae blooms caused by excess nutrients such as nitrogen and phosphorus- a largely manmade phenomenon known as eutrophication.
Read more: www.theguardian.com