China has rejected international oversight of its pledged cuts on carbon emissions even as more than 190 countries work towards a new deal that would combat global climate change.

Earlier this week, Chinese representatives at the United Nations climate conference in Lima, Peru had sought to delete provisions on a draft multiparty agreement that would grant non-government organizations and other countries supervisory rights on carbon reductions, according official environmental observers to the talks.

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The pledges will be the backbone of a global multilateral agreement expected to be signed by over 190 countries next year and implemented in 2020.

All national pledges on carbon reductions must be subjected to international oversight, said U.S. chief climate representative Todd Stern. He emphasized the need to encourage countries to be "as ambitious as possible" in their endeavors.

In light of a landmark U.S.-China climate pledge reached last month, White House officials have sought to downplay Beijing's refusal in accepting global scrutiny, arguing that the Lima agreement is completely distinct from the November bilateral deal.

Under the U.S.-China agreement, the U.S. said it would reduce carbon emissions by 26 to 28 percent by 2025, while China has - for the first time - agreed to cut emissions and increase the use of renewable energy to 20 percent by 2030.

Critics have pointed out the open-ended nature of the bilateral agreement with the use of ambiguous language such as "make best efforts" and "intends."

On Thursday, U.S. President Barack Obama touted China's anticipated accountability to global environmental standards under the recent climate deal between the two nations.

Experts, however, have expressed concern that China's move would hinder efforts at reaching any form of climate deal.

China's refusal has undermined the essence of "constructive cooperation" signified by the U.S.-China agreement, said Liz Gallagher, a senior adviser with the political analyst group E3G on Saturday.

WWF climate policy spokesperson Tasneem Essop said that Beijing's move is indicative of the risks posed by the initiative, particularly when parties take hard line stances.

Nevertheless, Essop expressed hope that parties would "soften their lines," noting  that the program is still in its "early days."

TagsU.S.-China climate deal, global multilateral climate agreement, carbon emission reductions, UN Climate Summit in Lima Peru