Forest Nitrogen Vertical (IMAGE) University of California - Davis Caption The forests of South Fork Mountain in northern California draw nitrogen from bedrock, making them some of the state's most productive forests. Understanding and quantifying this newly identified source of nitrogen may significantly impact scientists understanding of forest productivity, carbon storage and nitrogen cycling on land. Credit Photo by Scott Morford/UC Davis 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.