China's National Sword policy caused the quantity of plastic landfilled in the U.S. to jump by 23, researchers at the University at Buffalo found.The University of Buffalo study determined that while China's Green Fence policy in 2013 had no statistically significant impact on the amount of plastic landfilled in the U.S., the National Sword import restriction was a different story. After controlling for oil prices, the producer price index and the amount of plastic scrap exported, the research found that 23.2 more plastic was sent to U.S. landfills in 2018, the year China's import bans began to take effect.
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机译：布法罗大学（University at Buffalo）的研究人员发现，中国的“国剑”政策导致美国的塑料填埋量激增了23%。布法罗大学（University of Buffalo）的研究确定，虽然中国在2013年的“绿篱笆”政策对美国的塑料填埋量没有统计学上的显着影响，但国家利剑进口限制却是另一回事。在控制了油价、生产者价格指数和塑料废料出口量后，研究发现，2018年中国进口禁令开始生效的那一年，被送往美国垃圾填埋场的塑料增加了23.2%。
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