Carbon Isotope Composition of C3 Herbaceous Plants and Its Relation to Humidity Index in Arid and Humid Climate Zones in Northern China
Xianzhao Liu, Chaokui Li, Shujian Xu, Wenwen Wang, Guoan Wang, Lili Zhao
Chinese Bulletin of Botany . 2011, (6): 675 -687 .  DOI: 10.3724/SP.J.1259.2011.00675