Leaf Structure and Functional Traits of Populus euphratica

doi:10.7522/j.issn.1000-694X.2017.00049

Journal of Desert Research ›› 2018, Vol. 38 ›› Issue (4): 765-771.DOI: 10.7522/j.issn.1000-694X.2017.00049

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Leaf Structure and Functional Traits of Populus euphratica

Pan Yingping^1,2, Chen Yapeng², Wang Huaijun^1,2, Ren Zhiguo³

1. School of Urban and Environmental Science, Huaiyin Normal University, Huaian 223300, Jiangsu, China;
2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
3. Heihe Remote Sensing Experimental Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2016-11-02 Revised:2017-05-12 Online:2018-07-20 Published:2018-11-06

Abstract

Abstract: Leaf morphological and functional traits reflect the trade-off or coordinate strategies adopted by plants when they adapt to environmental stress. The study was conducted on Populus euphratica the constructive species of the riparian forest in the lower reaches of Tarim River.We measured leaf anatomical traits, leaf hydraulic conductance, δ¹³C values of P.euphratica grown at different groundwater depths, discussing how morphological and functional traits response to variation in groundwater depth. We also assessed the variation trend between hydraulic conductance capacity and anatomical structure, as well as analyzed the correlations between leaf hydraulic parameters, anatomical traits and water use efficiency. The results showed that:(1) Leaf anatomical traits (leaf thickness,epidermal thickness, palisade tissue thickness,stomatal parameters,vein density, main vein diameter) and functional traits (maximum leaf hydraulic conductance, water use efficiency, leaf mass per area) changed significantly in the deepest groundwater depth compared with them in the shallowest groundwater depth. (2) The variation in water transport capacity of P.euphratica under different groundwater depths has its anatomical structure basis;there was a coordinate relationship between leaf water transport and water loss. (3) Correlations were found between leaf anatomical traits (leaf thickness,palisade tissue thickness, epidermal thickness,stomatal length, stomatal width, stomatal density) and water use efficiency. (4) Co-ordinate relationship existed between leaf water transport and carbon investment.

Key words: leaf hydraulic traits, leaf anatomical structure, water use efficiency, Populus euphratica

CLC Number:

Q944.3

Pan Yingping, Chen Yapeng, Wang Huaijun, Ren Zhiguo. Leaf Structure and Functional Traits of Populus euphratica[J]. Journal of Desert Research, 2018, 38(4): 765-771.

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Leaf Structure and Functional Traits of Populus euphratica

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