| Biology and Soil |
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| Potential Geographical Distribution of Genus Ammopiptanthus (Leguminosae) in the Eastern Central Asian Desert and Its Determinant Environmental Factors |
| MA Song-mei1,2, ZHANG Ming-li1,3, CHEN Xi1 |
1.Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
3.Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China |
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Abstract On a large spatial scale, species distribution model is one of the effective ways for modelling species' potential distribution. Using species distribution model (MAXENT), this study aimed to determine the potential distribution areas of Ammopiptanthus mongolicus and Ammopiptanthus nanus in the eastern Central Asian desert, and then to identify the determinant environmental variables contributing to the distribution. Results show that: (1) The produced potential distribution areas of A. mongolicus agree well with the observed ones, and species A. mongolicus are restricted distributed in the eastern and southern part of Alxa desert and the western Ordos of Inner Mongolia. The most suitable habitats are in the eastern edge of the Ulan Buh Desert and a small area of northern Helan Mountain. The distribution-influencing factors are mainly the extreme temperature and precipitation, for example, the most drought month precipitation, the extremely low temperature, the coldest season temperature, etc. (2) The most suitable habitats of A. nanus are in the Wuqia County and south side along the Kunlun Mountains of Xinjiang. The influencing factors which control its potential distribution principally comprise of altitude and the extreme climatic factors.
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Received: 06 January 2012
Published: 20 September 2012
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2012, Vol. 32 
