Abstract
Leaf δ 13C of different plant functional groups (trees, shrubs and forbs; evergreen and deciduous; annual, biennial and perennial) were examined on the Changbai Mountains, China. Life form has a significant influence on plant δ 13C, suggesting that leaf δ 13C is also ideal for distinguishing functional groups species in temperate and frigid zones with high humidity. Additionally, the difference of water-use efficiency (WUE) is significant among different plant functional groups. δ 13C and WUE are in the following order of forbs < shrubs < trees. Within shrubs, δ 13C and WUE are higher for evergreen shrubs than deciduous shrubs. Differences in δ 13C and WUE are significant among different lifespan herbs, and δ 13C and WUE follow the order of annual herbs > biennial herbs > perennial herbs, not in accordance with the pattern obtained by previous studies in deserts, suggesting that the ranking of δ 13C and WUE among annual, biennial and perennial herbs may be dependent on local water availability.
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Supported by National Natural Science Foundation of China (Grant No. 40472159)
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Tan, W., Wang, G., Han, J. et al. δ13C and water-use efficiency indicated by δ13C of different plant functional groups on Changbai Mountains, Northeast China. Chin. Sci. Bull. 54, 1759–1764 (2009). https://doi.org/10.1007/s11434-009-0046-1
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DOI: https://doi.org/10.1007/s11434-009-0046-1