China imported 4.71 million tonnes of liquefied natural gas (LNG) in August, up 51.5 percent year on year, the country's customs authority said Sunday.

Total LNG imports in the first eight months reached 32.63 million tonnes, up 47.8 percent year on year, according to the General Administration of Customs.

China surpassed the Republic of Korea to become the world's second-largest importer of LNG in 2017, according to IHS Markit, a global marketing information company.

China's imports of natural gas have grown to meet increasing domestic consumption, primarily driven by environmental policies to replace coal-fired electricity generation.

An industry report says, the country is likely to surpass Japan to become the world's largest natural gas importer by 2019, with imports expected to reach 171 billion cubic meters by 2023, mostly LNG.