Abstract: According to the relevant statistic data,the effects of land uses on carbon emission and their spatial-temporal pattems in Changsha were measured and analyzed.The results showed that the carbon emission showed an rising trend with the average speed of 66.51×104t·a-1 from 2001 to 2012 in Changsha,and there were obvious differences in carbon emission between districts and countries in 2012,but the carbon intensity showed a declining trend.In addition,the results reflected that the construction land and farmland were the major carbon sources in Changsha.Accordingly,some suggestions are put forward to reduce the carbon emission through land use optimization in Changsha.

Key words: land use change, carbon emission, Changsha