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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (4): 1027-1033    DOI: 10.7522/j.issn.1000-694X.2013.00145
Biology and Soil     
Interspecies Relationship and Niche  Analysis on Phytocoenosium  in the Ejina Oasis
HUO Hong, FENG Qi, SU Yong-hong, SI Jian-hua, XI Hai-yang, YU Teng-fei
Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of sciences, Lanzhou 730000, China
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Abstract  

Based on investigation data of 61 vegetation sample plots, we aimed to analyse interspecies relationship and species niche of 15 main species in the Ejina Oasis at the lower reaches of Heihe River. Based on 2×2 contingency table, Ochiai correlation index, Pearson correlation analysis and Spearman correlation test, we studied interspecies relationship and niche by means of calculating niche breadth, niche overlap, variance ratio, chisquare test. Important findings were as follows: (1) Populus euphratica, Tamarix ramosissima and Sophora alopecuroides were generalized and dominant species for arborous layer, shrub layer and herbaceous layer respectively; (2) General associativity of phytocoenosium in the Ejina Oasis was insignificantly positive correlation, most species pairs were neutral associated and all species tended to distribute independently; (3) Interspecies association coefficient and niche overlap showed significantly positive correlation, however, there was no direct linear correlation between niche breadth and overlap.

Key words:  Ejina Oasis      biodiversity      eremium phytocoenosium      interspecies relationship      niche measure     
Received:  28 April 2012      Published:  12 June 2012
ZTFLH:  Q948.12  

Cite this article: 

HUO Hong, FENG Qi, SU Yong-hong, SI Jian-hua, XI Hai-yang, YU Teng-fei. Interspecies Relationship and Niche  Analysis on Phytocoenosium  in the Ejina Oasis. JOURNAL OF DESERT RESEARCH, 2013, 33(4): 1027-1033.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00145     OR     http://www.desert.ac.cn/EN/Y2013/V33/I4/1027

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