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《Acta Botanica Boreali-occidentalia Sinica》 2005-10
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Composition and Ecological Distribution of the Algae Living in the Gurbantonggut Desert of Xinjiang

ZHANG Bing-chang~1,ZHANG Yuan-ming~2,ZHAO Jian-cheng~(1*) (1 College of Life Science,Hebei Normal University,Shijiazhuang 050016,China;2 Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011, China)  
73 soil samples of algae taken from biologically crusted soil of 9 quadrats located in the Gurbantonggut Desert were used to culture and identify their algae on purpose of analyzing the composition and ecological distribution of the algae in the Gurbantonggut Desert.The results showed that in the desert,there were 121 species and 49 genera of algae of which belonged to Cyanophyta,Chlorophyta,Bacillariophyta and Euglenophyta.The species were composed of 83 blue algae,20 green algae,11 diatoms and 7 euglenoids.The blue algae made up 68.60% of the total species number and filamentous species were their dominant species accounting for 66.27%;the green algae were mainly composed of unicellular species.The algae showed somewhat different species diversities and population compositions in the different parts of the Gurbantonggut Desert,the most diverse in the middle part,more diverse in the northern and southern parts and remarkably less diverse in the eastern and western parts.In the desert dunes,a minority of the algae species was not obviously selective to geomorphologic positions while some differently distributed in different geomorphologic locations.The algae differently distributed in different layers of the biologically crusted soil, abundant in species and numbers and mainly consisting of filamentous species in the biologically crusted soil but declining in its species and numbers the layers below the biologically crusted soil.
【Fund】: 国家自然科学基金重大研究计划(90202019);; 中国科学院知识创新工程重要方向项目(KZCX3-SW-343)
【CateGory Index】: Q948.1
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