Fig. 2. (IMAGE) Science China Press Caption Modeling framework for afforestation in Beijing. (a) Spatial units for modeling; (b) Variables used in the modeling. Credit ©Science China Press Usage Restrictions Use with credit. 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.