ZitatWith 91 percent of the 8.8 million tons of plastic added to oceans each year originating in rivers, the Yangtze and five other Chinese rivers are the dominant polluters.
Pollution of the marine environment with plastic debris is widely recognized as an increasing ecological concern because of the chemical persistence of plastics and their fragmentation into “microplastics,” which can be ingested by small organisms, such as zooplankton, that are eaten by increasingly larger predators in the food chain.
Production of plastics began in 1950 with 2.3 million tons, and has grown to 448 million tons in 2015. 18 percent of plastics produced that is improperly handled after use is referred to by researchers as “mismanaged plastic waste.” Given global production trends, it is estimated that “mismanaged plastic waste” will triple to 170-292 million tons by 2060.
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Of the 8.8 million tons of plastic waste that flows down the world’s “small first order streams to large rivers that discharge to the sea,” the “top ten” polluting rivers account for 88-95% of plastics that flow each year into the world’s oceans.
The six Chinese rivers on the “top ten” list—the Yangtze, Yellow, Hai, Pearl, the Amur that borders Russia, and the headlands of the Mekong River—account for about 3.8 million tons, or almost half of the world’s plastic flow into the oceans. The Yangtze alone accounts for 1.6 million tons of plastic discharged into the oceans.
ZitatWith 91 percent of the 8.8 million tons of plastic added to oceans each year originating in rivers, the Yangtze and five other Chinese rivers are the dominant polluters.
Pollution of the marine environment with plastic debris is widely recognized as an increasing ecological concern because of the chemical persistence of plastics and their fragmentation into “microplastics,” which can be ingested by small organisms, such as zooplankton, that are eaten by increasingly larger predators in the food chain.
Production of plastics began in 1950 with 2.3 million tons, and has grown to 448 million tons in 2015. 18 percent of plastics produced that is improperly handled after use is referred to by researchers as “mismanaged plastic waste.” Given global production trends, it is estimated that “mismanaged plastic waste” will triple to 170-292 million tons by 2060.
[snip]
Of the 8.8 million tons of plastic waste that flows down the world’s “small first order streams to large rivers that discharge to the sea,” the “top ten” polluting rivers account for 88-95% of plastics that flow each year into the world’s oceans.
The six Chinese rivers on the “top ten” list—the Yangtze, Yellow, Hai, Pearl, the Amur that borders Russia, and the headlands of the Mekong River—account for about 3.8 million tons, or almost half of the world’s plastic flow into the oceans. The Yangtze alone accounts for 1.6 million tons of plastic discharged into the oceans.