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| Plant Functional Traits and Interrelationships of 34 Plant Species in South Central Horqin Sandy Land, China |
| Zhou Xin1,2, Zuo Xiaoan1, Zhao Xueyong1, Liu Chuan2, Lv Peng1,2 |
1. Naiman Desertification Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract There have been an increasing number of quantitative studies on relationships between plant functional traits and their differences among plant life forms and functional types over the past few decades. We measured 5 functional traits:fresh weight(FW), dry weight(DW), leaf dry matter content(LDMC), leaf area(LA) and specific leaf area(SLA) among 34 plant species in south central part of Horqin Sandy Land, China. We divided plant species into 3 life forms(annual/biennial grass, perennial grass, shrub) and 2 photosynthetic pathways(C3 plants and C4 plants) then carried on further analyses about variable characteristics and correlation of functional traits, and their adaptability to the environment. The results showed that LDMC of annual/biennial grass(0.23 g·g-1) was significantly lower than that of perennial grass(0.31 g·g-1) and shrubs(0.32 g·g-1), while SLA of annual/biennial grass(22.14 m2·kg-1) was significantly higher than perennial grass(17.18 m2·kg-1) and shrubs(13.41 m2·kg-1). In annual/biennial and perennial grass groups, LDMC of C4 grass was significantly higher than C3 grass. SLA of C4 grass among perennials was higher than C3 grass significantly. LDMC of C3 plants was in order as annuals/biennialsSLA were negatively correlated; the dry weight and SLA of C4 plants and perennial grass were also negatively correlated. Functional traits of different plant life forms and plant functional types are significantly divergent in sandy land ecosystems. Sandy land shrubs and perennials had stronger ability to adapt to drought environment, while annuals/biennials had stronger ability to maintain nutrients in plant and acquire soil resources.
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Received: 07 May 2014
Published: 20 November 2015
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2015, Vol. 35 
