China's coal imports will decline 10 percent year-on-year in 2013, the first drop in five years, due to increasing domestic supply and the country's improved transportation network, a Thomson Reuters survey showed.

China - the world's largest coal importer - will import up to 210.8 million metric tons of the commodity in 2013, it said.

The country, which accounts for about one-third of the seaborne coal market in the Pacific region, has a growing influence in the region's coal market.