The value of bonds issued in China last month totaled 4.4 trillion yuan (about 641 billion U.S. dollars), according to data from the central bank.

Treasury bond issuance stood at 369.5 billion yuan, while local government bond issuance was worth 883 billion yuan, according to the People's Bank of China.

By the end of August, the size of outstanding bond market debt was 81.9 trillion yuan.

A number of regulations were introduced last year to rein in financial risks as local government debt and corporate leverage increased.

The central bank has pledged more efforts to improve the disposal of bond defaults, and unify rules on approval and information disclosure of corporate credit bond issuance.

Last year, China issued bonds worth 40.8 trillion yuan, up 12.9 percent from the previous year.