Evolution of global GPP trend (IMAGE) Ecosystem Health and Sustainability Caption Scientists from Nanjing Agricultural University quantified the evolution of global GPP trend using a dozen long-term global GPP datasets Credit Songhan Wang, Nanjing Agricultural University Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. License Original 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.