Impacts of Climate Change on Potential Climatic Productivity of Wheat in Suzhou

Global climate change has far-reaching impact on natural ecosystems and the socio –economic system, which has called for attention of governments and scientific community and even the general public now. In the background of global climate change, the study of the effect of climate change on crop potential production has an important theoretical and practical significance. The relationship between wheat productivity and climate change and the response of the wheat productivity to the climate change were studied with Suzhou, China being a study area, aiming to provide a scientific basis for rational development and utilization of climate resources against the global climate change in Suzhou. The results showed that the annual average temperature of Suzhou tended to increase by 0.23°C per 10 years from 1977 to 2007. The annual precipitation has not been increased obviously over the recent 30 years. In the terms of annual change of climatic productivity of wheat, the average wheat productivity on the whole showed a increasing trend the last 50 years. However, the potential climatic productivity of wheat every decade first decrease and then increased. The correlation analysis indicated that there were assume the weak and assumes the strong correlations between the wheat climate productivity and the temperature and the precipitation with their relation coefficients (R) are R=0.04187 and R=0.70051, respectively. the influence of the precipitation to the Suzhou wheat climate productivity is higher than the temperature obviously . But there were the strong correlations between the wheat actual output and the temperature and the precipitation, therefore, the temperature and the precipitation are the important attributes that enhances wheat climate productivity realization rate.