In order to explore the effects of climate change on the crop production and agricultural vegetation on the carbon sequestration ability in the Northeast China in the future, the CERES models ran under both baseline weather and climate change scenarios, which were based on 3 global climate models (GCMs) of GISS, GFDL and UKMO, were used to evaluate the effects of climate change on productivities, moisture status and carbon sequestration of soybean, maize, spring wheat and rice in the Northeast China. In 2040, the growth duration of maize and rice would be shortened by 27 d and 29 d, respectively, while 13 d and 9 d were shortened by for soybean and spring wheat, respectively. The simulated soybean biomass under rainfed scenario was averagely 50% higher than that under the baseline weather, while 10% and 6% increments were simulated for irrigated rice and rainfed maize, respectively. The simulated biomass of rainfed spring wheat would be vulnerable to the climate change. The carbon sequestration ability of crops in the Northeast China would be enhanced from 3.82 t/hm 2 to 4.39 t/hm 2 by the climate change. The results indicated that the climate in the Northeast China would display a warm-dry tendency, and the warming climate would shorten the growth period of crops. The soybean productivities would increase significantly in scenarios of doubled CO 2, and rice and maize productivities would increase slightly, while spring wheat productivities would be unstable due to its sensibility to the moisture. Currently, compared with other regions, the crop carbon sequestration ability in the Northeast China was relative weak, while the climate change in the future would be beneficial for the improvement of crop productivities and the strengthening of agricultural carbon pool.
