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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (2): 508-514    DOI: 10.7522/j.issn.1000-694X.2013.00069
    
Species Diversity and Its Relationship with Soil Factor under Different Site Conditions in Desert-oasis Ecotone
XIE Ting-ting1,2, SU Pei-xi1,3, ZHOU Zi-juan1,3, LI Shan-jia1,3, ZHANG Hai-na1,3
1.Linze Inland River Basin Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
2.Heihe Key Laboratory of Ecohydrology and Integrated River Basin Science, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
3.Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
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Abstract  

Vegatation and soil surverys were conducted under different site conditions in 2007-2011 to study species diversity using richness indices, evenness indices and diversity indices, in the middle reaches of Heihe River Basin, meanwhile the relationship between species distribution and soil enviromental factors was also studied by the canonical correspondence analysis. The results showed that the vegetation covers and species diversity were the highest in the interdune lowland, they were the lowest in the mobile dune; the result of the Hills index (diversity ordering) showed the species diversity reduced along with soil water content decreasing, the orders of species diversity was interdune lowland, flat slope, fixed dune, semifixed dune and mobile dune. The degree of influences of soil factors on vegetation distribution was soil water content>pH>total K>organic matter>available N>total N>available K>total P>saline content>available P, soil water content and pH were important factors significantly affecting spatial distribution difference of vegetation, the explanation of environmental was 98%, proof sorting credible.

Key words:  desert-oasis ecotone      species diversity      soil factor      canonical correspondence analysis     
Received:  29 May 2012      Published:  20 September 2012
ZTFLH:  Q948.113  
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Cite this article: 

. Species Diversity and Its Relationship with Soil Factor under Different Site Conditions in Desert-oasis Ecotone. JOURNAL OF DESERT RESEARCH, 2013, 33(2): 508-514.

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http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00069     OR     http://www.desert.ac.cn/EN/Y2013/V33/I2/508

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