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[1]WANG Yin-shan,YU En-tao,HE Xue-fen,et al.A Study on Stable Carbon Isotope Composition of Main Halophytes in Ebinur Lake Wetland[J].Research of Soil and Water Conservation,2009,16(05):245-250.

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A Study on Stable Carbon Isotope Composition of Main Halophytes in Ebinur Lake Wetland

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 05 Page number: 245-250 Column: Public date: 2009-10-20

Title:: A Study on Stable Carbon Isotope Composition of Main Halophytes in Ebinur Lake Wetland

Author(s):: WANG Yin-shan^1,2, YU En-tao³, HE Xue-fen^1,2, HE Jing^1,2, XU Min^1,2, LÜ Guang-hui^1,2,4; 1. Xinjiang Key Laboratory of Oasis Ecology, Urumqi 830046, China;
2. College of Resources and Environment Science, Xinjiang University, Urumqi 830046, China;
3. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;
4. Institute of Arid Ecology & Environment, Xinjiang University, Urumqi 830046, China

Keywords:: Ebinur Lake wetland; halophytes; stable carbon isotopes; water use efficiency (WUE)

CLC:: S945.12

DOI:: -

Abstract:: The stable carbon isotopes (δ¹³C) compositions of 28 plant species growing in Ebinur Lake Wetland in Xinjiang,China were measured.The results showed that 24 species were identified as C₃ plant,and 4 species were categorized as C₄ plant.The δ¹³C values of C₃ species range from -25.67‰～-29.59‰ and the average δ¹³C value is -27.88‰,which is less negative than investigated results on a global scale (-28.74‰); the δ¹³C values of C₄ species range from -16.63‰～-17.39‰ and the average δ¹³C value is -16.88‰.Four kinds of C₄ plants are classified as Chenopodiaceae,the distribution is centralized.In general,the ability of Chenopodiaceae plant to adapt arid environment is stronger than other families.The δ¹³C values of shrubs are -27.36‰,which demonstrated the highest of water use efficiency (WUE),the δ¹³C values of shrubs are less negative than these of grasses significantly,which are herbaceous plants,perennial plants.It indicates that shrubs had stronger adaptability to arid and saline environments than grasses.In addition,the average δ¹³C value of arboreal plants (-28.16‰) is not the highest.Through comparing with δ¹³C value,on the whole,δ¹³C values of 13 species in June obviously were higher than that in August,which indicates that survival environment and moisture condition became good tendency from June to August.

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