Using the most recent energy and other statistical data, we have estimated the annual trends in China9s greenhouse gas emissions for the period 1990 to 2000. The authors of this Policy Forum calculate that COemissions declined by 7.3% between 1996 and 2000, while CHemissions declined by 2.2% between 1997 and 2000. These reductions were due to a combination of energy reforms, economic restructuring, forestry policies, and economic slowdown. The effects of these emission changes on global mean temperatures are estimated and compared with the effects of concurrent changes in two aerosol species, sulfate and black carbon.