Photosynthetica, 2011 (vol. 49), issue 1

Photosynthetica 2011, 49(1):43-47 | DOI: 10.1007/s11099-011-0018-y

Variation in structural and physiological leaf traits of eight species in karst desertification area of China

L. Y. Wei1,3,*, D. J. Zeng2, S. H. Lv2, J. L. Zhang2, J. F. Jiao2, Y. M. You2, X. K. Li2
1 Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
2 Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, Guangxi, P.R. China
3 Graduate School of Chinese Academy of Sciences, Beijing, China

Leaf traits have long been recognized as influential factors in the acquisition and processing of resources by plants. However, there is less knowledge of between-species variations in seasonal changes in leaf traits and trait interrelationships. Therefore, we examined variations in leaf area (LA), dry biomass (DM), specific leaf area (SLA), and leaf gas-exchange parameters in one non-native and seven native tree species under field environmental conditions, in a karst area in China subjected to desertification. Measurements were taken three times during the growing season. The results show that the seven native trees had higher LA, DM, and water-use efficiency (WUE) than the non-native Cinnamomum camphora. In contrast, all the native tree species except Ligustrum lucidum had lower photosynthetic rates (P N) than the non-native species. In all species, the relationship between LA and DM was less variable than the relationship between SLA and LA. However, leaves of the non-native C. camphora and native species Sterculia lanceolata, Cleidiocarpon cavalerei and Cyclobalanopsis glauca were highly sensitive to seasonal conditions, leaves of Sapindus mukorossi and Ligustrum lucidum were less sensitive to seasonal changes, and leaves of Syzygium cumini and Cephalomappa sinensis were insensitive. An understanding of leaf traits will aid the selection of suitable species for land restoration.

Keywords: desertification; dry biomass; karst area; leaf area; photosynthesis; specific leaf area

Received: February 27, 2009; Accepted: October 14, 2010; Published: March 1, 2011Show citation

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Wei, L.Y., Zeng, D.J., Lv, S.H., Zhang, J.L., Jiao, J.F., You, Y.M., & Li, X.K. (2011). Variation in structural and physiological leaf traits of eight species in karst desertification area of China. Photosynthetica49(1), 43-47. doi: 10.1007/s11099-011-0018-y.
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