China, the world's largest carbon emitter, has said Canada's withdrawal from the Kyoto Protocol was "regrettable" and went against international attempts to tackle climate change.
Canada yesterday became the first country to formally withdraw from the protocol, saying the pact on cutting carbon emissions was preventing the world from effectively tackling climate change.
The move is "against the efforts of the international community and is regrettable," Chinese foreign ministry spokesman Liu Weimin told a regular media briefing.
"We hope Canada will face up to its responsibilities and obligations, honour its commitments and actively participate in relevant international cooperation against climate change."
China is the world's biggest emitter of carbon but has always insisted that as a developing country it should be exempt from binding obligations on emissions.
The landmark Kyoto pact, reached in 1997, is the only global treaty that sets down targeted curbs in global emissions.
But those curbs apply only to rich countries, excluding the United States - which has refused to ratify the accord.
Beijing believes that developed nations, with their long history of industrialisation, should take responsibility for climate change and has called for more funding to help poorer nations cope with its impact on them.
But the lack of binding constraints over giants like China and India and Washington's refusal to join the protocol have gravely weakened efforts to address climate change, especially after the near-collapse of talks in Copenhagen in 2009.
Canada agreed under the Kyoto Protocol to reduce CO2 emissions to 6% below 1990 levels by 2012, but its emissions of the gases blamed for damaging Earth's fragile climate system have instead increased sharply.
Participants in the UN climate conference in Durban, South Africa, last week reached an accord that for the first time will bring all major greenhouse-gas emitters under a single legal roof.
If approved as scheduled in 2015, the pact will be operational from 2020 and become the prime weapon in the fight against climate change.
Environmentalists, however, have called it porous.
