Tree-ring sample (IMAGE) Utah State University Caption A cross-section of Scots pine (Pinus sylvestris L.), one of the tree species used for the soil moisture reconstruction in inner East Asia. Credit Peng Zhang 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.