Inefficient performance of irrigation systems not only leads to a waste of water resources, but may also affect agriculture production, especially in regions facing a water stress problem. In rural China, only 40% of the water allocated to irrigation is effectively used, a figure much lower than...

Inefficient performance of irrigation systems not only leads to a waste of water resources, but may also affect agriculture production, especially in regions facing a water stress problem. In rural China, only 40% of the water allocated to irrigation is effectively used, a figure much lower than...

Paper replaced with revised version 06/03/08

Paper replaced with revised version 06/03/08

The emergence of biofuels has led to an increase in crop price and subsequently global food prices but the extent of the impact is subject to debate. Fully understanding the role of biofuels on agricultural markets requires properly accounting for the response of all affected inputs and outputs....

Sustainable use of water resources in the face of population and economic growth is of great importance in northern China, as it is in much of the world. Rapid expansion of irrigated agricultural and urban demand is depleting groundwater and overexploiting surface water resources in northern...