Global Research Trends related to CO_2 and Enlightment to China

Given the growing awareness on the likely catastrophic effects of climate change and the close association of climate change with global emission of greenhouse gases(of which carbon dioxide is more prominent),considerable research efforts have been devoted to the analysis of carbon dioxide(CO2) emissions and its relationship to sustainable development.Now GHG deduction programs had been coming into effect in many developed countries whose have more responsibility for history CO2 emissions,as well as the studies has been mature.First,the GHG emission accounting system is more all-inclusive and the methods is more reasonable with the effort of IPCC from 1995 and all other researchers related.Second,the responsibility location is more reasonable and fair.Along with the clarity of "carbon transfer"or"carbon leakage",the perspective and methodology for parting regional CO2 emission responsibility is turning from production base to consumption base.Third,the decomposition method is deeper and more complexe.For example,the decomposition formulas are including KAYA expression and Input-output expression and the decomposition techniques are developed from Index analysis to Sample Average Division and then Adaptive-weighting Division.Fourth,the prediction model is more integrated and long-term.The top-down model and bottom-up model are both inter-embedded and synergetic.Trends above give some advices for the research of CO2 in our country,such as emission factors database construction,deeper research on emission responsibility and structure analysis,promotion of modeling technology and technology-environment database.