China's nonmanufacturing industries gained stronger growth momentum in March, supported by an accelerating economic recovery.

The nonmanufacturing purchasing managers' index, an indicator that reflects the business activities in the construction and service sectors, bounced back to 55.6 in March, according to the National Bureau of Statistics and the China Federation of Logistics and Purchasing on Wednesday. It was 54.5 in February and 56.2 in January.

A PMI above 50 means expansion, as opposed to contraction. The survey covers 1,200 enterprises.