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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (3): 804-812    DOI: 10.7522/j.issn.1000-694X.2013.00115
Biology and Soil     
Fractal Characteristics of Particle Size Distribution in Salt-rich Sediments from Different Depths under Six Different Types of Landscapes in the Playa of the Ebinur Lake
GE Yong-xiao1,2, ABUDUWAILI Jilili1, LIU Dong-wei3, ABULIMITI Mireban1,4
1.State Key Laboratory of Desert and Oasis Ecology, 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.College of Environment and Resources, Inner Mongolia University, Hohhot 010021, China;
4.College of Resources and Environment Science, Xinjiang University, Urumqi 830046, China
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Abstract  

Dry lakebed has become one of the main sources of saline-alkali dust storms in arid areas due to strong wind erosion. In order to study the anti-erosion effects of different types of landscapes, salt-rich sediments were collected under six different types of landscapes in the playa of the Ebinur Lake. Using the methods of single and multi-fractal dimension and Canonical Correspondence Analysis (CCA), the spatial distribution characteristics of erosion intensity were discussed with the particle size data of salt-rich sediments. The results showed that fractal dimension of the particle size distribution (PSD) had significant differences between two sediment samples from the depth of 0-30 cm and 30-60 cm under six kinds of landscapes. The fractal dimension values of the PSD ranged from 1.94 to 2.40 in the sediments from the depth of 0-30 cm and decreased in the order of zone dominated by Haloxylon ammodendron  (L5)> by Populus euphratica (L1)> by bare desert (L6)> by Phragmites australis (L4)> by other trees(L2)> by herbs (L3), but the other ranged from 1.92 to 2.53 from the depth of 30-60 cm and followed the order of L5=L1>L4>L6>L2>L3. The fractal dimension of the PSD was significantly positively correlated with the particle volume-size fraction (<73.63 μm). Thus, the multifractal dimension and CCA analysis can provide useful methods for analyzing the uniformity characteristics of the PSD from different depths of salt-rich sediments in natural vegetation. According to studies of the salt-rich sediments and plant in the Ebinur Lake, establishing of native vegetation is one method of stabilizing shifting soil and minimizing saline dust pollution from dry lakebeds. It is suggested that the future research should focus more on ecological restoration for preventing saline dust storms.

Key words:  dry lakebed      fractal characteristics      canonical correspondence analysis      Ebinur Lake      sediment     
Received:  02 March 2012      Published:  05 April 2012
ZTFLH:  S151.9  

Cite this article: 

GE Yong-xiao1,2, ABUDUWAILI Jilili1, LIU Dong-wei3, ABULIMITI Mireban1,4. Fractal Characteristics of Particle Size Distribution in Salt-rich Sediments from Different Depths under Six Different Types of Landscapes in the Playa of the Ebinur Lake. JOURNAL OF DESERT RESEARCH, 2013, 33(3): 804-812.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00115     OR     http://www.desert.ac.cn/EN/Y2013/V33/I3/804

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