China will play a constructive role as a part of international efforts to help Mali realize early ethnic reconciliation and stability in the face of many remaining challenges.

Foreign Ministry spokesman Hong Lei made the remarks on Thursday in response to media reports saying that China has offered to send more than 500 soldiers to the UN peacekeeping forces in Mali.

The move, if confirmed, marks China's biggest contribution to UN peacekeeping and aims to strengthen China-Africa security cooperation, which lags behind cooperation in the political and economic fields, observers said.

China supports the efforts of the Malian government, the United Nations and regional organizations to secure the country, and backs a full implementation of Security Council resolutions 2085 and 2100, Hong said at a daily news conference.

"Currently, the political and security situation in Mali has seen some progress, but it still faces a number of challenges to fundamentally solve the problems," he said.

France sent forces to the West African country in January and halted an advance by Islamist guerrillas that had controlled the northern half of the country for 10 months. But it hopes to hand that role over to UN peacekeepers in July.

More than 6,500 African troops are already in the country while the UN is looking for at least 3,000 more to bolster the force.

Li Wentao, an expert on Africa studies at the China Institutes of Contemporary International Relations, said the deployment, if true, shows China's willingness to better help Africa address its security concerns and to protect growing economic interests of Chinese investors there.

In 2012, China surpassed the United States and Europe as Africa's largest trading partner, with bilateral trade totaling $200 billion. More than 2,000 Chinese companies invested in Africa at the end of 2011, but they occasionally fell victims of violence.

Africa also welcomes Chinese involvement in its precarious security issues, which are difficult to handle by itself due to lack of money and capability, while they are often dominated by Western powers with a biased stance, said Li.

"In the future, China is likely to continue increasing its presence in Africa as a responsible major power with a more neutral stance in the field," he added.

China has not played a major role in diplomacy over Mali, while this step is a positive signal to regional powers in Africa, said Richard Gowan of New York University's Center on International Cooperation.

The final number of Chinese troops who will take part has yet to be decided as talks between UN leaders and China are not yet completed, but "it is a significant move by China", AFP cited UN diplomats as saying.

At least 155 of the Chinese troops are expected to be engineers, according to a UN official.

China contributed its first peacekeepers in 1992 and has since stepped up its presence, though they have not taken part in military operations. It currently has about 2,000 troops in missions around the world, more than the other four permanent UN Security Council members, the US, Russia, Britain and France.

AFP contributed to this story.