This paper reports on a regional climate change model developed to predict the impacts of climate change of Chinese agriculture. The model, developed by the UK’s Hadley Centre for Climate Change Predication and Research, took into account climate and soil variables, and the influence of higher atmospheric concentrations of carbon dioxide on plant metabolism.

Rice cultivation system is directly affected by climate conditions and changes. This study aimed to analyze the impact of climate change on the water requirements of agricultural reservoirs using a reservoir water-balance model that includes climate change data, the paddy rice growing season and changes in land use. The results showed that due to increasing temperature, transplanting and heading dates were delayed 5-25 days and 0-10 days, respectively, in comparison to the baseline. The decrease in rates could be the result of IWR and increasing watershed runoff (average 10.7% to 27.0%).

Increasing nitrogen fertilizer application has increased crop productivity and met the food demands of growing populations, but its use efficiency is very low. More than 50% of applied nitrogen is not utilized by crops,posing huge economical costs and environmental concerns. Therefore, fertilizer management should consider optimum time, rates, source and methods of application (the "4Rs" of nutrient stewardship) to increase use efficiency, crop yield, soil health and farm profits and to reduce negative environmental effects.

This report, released by the Commission on Sustainable Agriculture and Climate Change, identifies a set of clear actions to be undertaken by key stakeholders to achieve food security in the context of climate change. It reasons that widespread uptake of sustainable practices in agriculture and food supply chains is essential to meet current and future threats to food security and environmental resilience. It outlines the threats as follows: