Abstract

In future decades, food demand for an increased population with elevated standards of living poses a huge challenge, particularly in the sense of the environmental impacts of agricultural systems. We have analyzed agricultural data from the past 50 years, and found that the current agricultural practices will have negative effects on global food production: total agricultural area has decreased since 2000, fertilizer and pesticide consumption increased while their efficiency decreased, and available water sources are already being used for irrigation. Expansion of biofuel production, cultivation limitations of genetically modified organisms, and the trend of increasing living standards will all intensify the risks of a global food crisis in the coming decades. Crop yield and environmental protection will then have to be traded off if there are no feasible solutions at country or regional scales, and it is crucial for agricultural sustainability to increase crop yields and simultaneously decrease environmental impacts of agriculture intensification