Greece has been suspended from UN carbon trading in an unprecedented punishment for violating greenhouse gas reporting rules that underpin a fight against global warming, officials said on Tuesday. A group of legal experts enforcing compliance with the UN's Kyoto Protocol also said it was opening proceedings against Canada for alleged violations of rules on accounting for heat-trapping gases. "Greece is declared to be in non-compliance," the enforcement branch said in a statement distributed by the Bonn-based UN Climate Change Secretariat, the first such ruling since Kyoto entered into force in 2005. Athens had failed to maintain a proper national system for recording greenhouse gas emissions, key to ensuring compliance with the protocol seeking to slow temperature rises that could bring more floods, droughts, heat waves and rising seas. The Kyoto Protocol imposes a cap on emissions of greenhouse gases by some 37 industrialized countries but allows them to meet their targets by paying for emissions cuts elsewhere, such as in the developing world or former East Bloc nations.