Groundwater Pumping in China (1 of 2) (IMAGE) University of East Anglia Caption China's groundwater irrigation system is responsible for polluting the atmosphere with more than 30 million tons of CO2 per year -- according to research from the University of East Anglia. Credit Jinxia Wang, Centre for Chinese Agricultural Policy (CCAP) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.