China welcomes the adoption of a resolution by the board members of the International Atomic Energy Agency (IAEA) to close investigations into possible military dimensions to the Iranian nuclear program, Foreign Ministry Spokesman Hong Lei said in a news conference on Wednesday.

The IAEA Board of Governors said in the resolution adopted in a meeting on Tuesday that it "notes that all the activities in the Road-map for the clarification of past and present outstanding issues regarding Iran's nuclear programme were implemented in accordance with the agreed schedule and further notes that this closes the Board's consideration of this item".

The adoption of the resolution will pave the way for the implementation of the Joint Comprehensive Plan of Action (JCPOA), Hong said.

"China commends the efforts made by the IAEA and Iran for the settlement of the issue," he said.

"The preparatory work for implementing the JCPOA is going well as P5+1 and Iran have taken concrete actions to show their political support. The Chinese side stands ready to work with the other parties, act in strict accordance with the JCPOA, and speed up all preparatory work so that the Implementation Day can come at an early date," said the spokesman.