| Impact of habitat heterogeneity on plant community pattern in Gurbantunggut Desert |
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| 作者姓名： | QIAN Yibing WU Zhaoning ZHANG Liyun SHI Qingdong JIANG Jin TANG Lisong |
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| 作者单位： | 1. Xinjiang Institute of Ecology and Geography，CAS，Urumqi 830011，China; 2. College of Resources and Environment Sciences，Xinjiang University，Urumqi 830008，China |
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| 基金项目： | Xinjiang Uygur Autonomous Region's Natural Science Foundation Project，No.200321103，The special support project from the Director's fund of the Xinjiang Institute of Ecology and Geology No.20032059 and National Natural Science Foundation Project，No.4 |
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| 摘 要： | 1IntroductionStudy on the interrelationship between vegetation patterns and their habitat heterogeneity is important to recover and rehabilitate the desert vegetation, stabilize the desert ecosystem and prevent desert expansion. Domestic and foreign researchers have carried out many studies on this topic (Archer etal., 2002; Bolling etal., 2000; Chen etal., 2003; Dasti etal., 1994; Gu etal., 2002, Li etal., 2001; Li etal., 2001; Liang etal., 2003), which have used and refined statistic tech…
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| 收稿时间： | 22 June 2004 |
| 修稿时间： | 10 September 2004 |
Impact of habitat heterogeneity on plant community pattern in Gurbantunggut Desert |
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| QIAN Yibing,WU Zhaoning,ZHANG Liyun,SHI Qingdong,JIANG Jin,TANG Lisong.Impact of habitat heterogeneity on plant community pattern in Gurbantunggut Desert[J].Journal of Geographical Sciences,2004,14(4):447-455. |
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| Authors: | QIAN Yibing WU Zhaoning ZHANG Liyun SHI Qingdong JIANG Jin TANG Lisong |
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| Institution: | (1) Xinjiang Institute of Ecology and Geography, CAS, 830011 Urumqi, China;(2) College of Resources and Environment Sciences, Xinjiang University, 830008 Urumqi, China |
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| Abstract: | This paper reports a geomorphologic landscape investigation, vegetation survey and soil sampling at 14 sites across the Gurbantunggut Desert between 87o37'09'-88o24'04'E and 44o14'04'-45o41'52'N. The study encountered 8 species of low trees and shrubs, 5 of perennial herbs, 8 of annual plants and 48 of ephemeral and ephemeroid plants. These species of plants represent one-third of the species found in the Gurbantunggut Desert, and their communities make up a large proportion of desert vegetation with great landscape significance. In the investigation we found that the plant communities are accordingly succeeded with the spatial variation of macro-ecoenvironment. Using Principal Component Analysis (PCA) and Correlation Analysis (CA) we found that the micro-ecoenvironment heterogeneity of aeolian sandy soil's physical and chemical properties such as soil nutrient, soil moisture, soil salt, pH etc. only impacted the diversity of herb synusia (PIEherb) of the desert, with a negative correlation. Meanwhile, the impact of microhabitat on the plant community pattern with an antagonistic interaction made vegetation's eco-distribution in a temporary equilibrium. |
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| Keywords: | impact habitat heterogeneity plant community pattern Gurbantunggut Desert |
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