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| The Foliar Dust Grain Size Characteristics of Different Plant Species in the Central Taklimakan Desert |
| Jia Wenru1,2, Li Shengyu1, Gao Xiaoyang1,2, Wang Ningbo1,2, Wang Shijie1,2, Tian Ye3, Liu Jianyu3, Mao Wenlian3, Tang Jinfeng3 |
1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Tarim Oilfield Corporation, China National Petroleum Corporation, Kurle 841000, Xinjiang, China |
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Abstract In order to reveal the foliar dust grain-size characteristics of different plants, foliar dust of ten broadleaf plants and dustfall in cylinder were sampled in the Tazhong Botanical Garden in the Central Taklimakan Desert. The result shows that: (1) The mean particle size of foliar dust of ten plants is 16-61μm, particles are dominated by silt sand and fine sand, silt (65.854%) and clay (7.771%) content is greater than that of dustfall in cylinder (32.014% and 3.187%, respectively); Sorting of plant foliar dust is poor, the range of sorting coefficient is 1.416-1.742. Skewness is nearly positively skewed or very positively skewed. Kurtosis range is between medium and narrow, the kurtosis value is concentrated on the range of 1.019-1.375. Compared with dustfall in cylinder, the plants foliar dust is finer, poorly sorted, positively skewed in smaller range with wider-kurtosis. (2) The grain size of foliar dust is also different among the ten plants, the order in mean particle size from small to large is Populus pruinosa Schrenk, Ammodendron bifolium (Pall.)Yakovl., Elaeagnus angustifolia L., Fraxinus sogdiana Bge., Ammopiptanthus mongolicus (Maxim.) Cheng f., Lycium chinense Mill, Astragalus adsurgens Pall., Halimodendron halodendron (Pall.)Voss., Glycyrrhiza inflata Batal and Nitraria tangutorum Bobr. The result shows that plants have very strong selectivity on the retention and adsorption to atmospheric dust, and the selectivity depends on a combination of factors such as plant foliar characteristics (whether or not there are villous or fold, etc.), plant life forms (trees, shrubs, herbaceous), particle size distribution of wind sand flow, and microclimate characteristics near the ground. (3) The scatter diagrams of grain size parameters indicate that the sedimentary environments are different between plant foliar dust and dustfall in cylinder, and among foliar dust of the ten plants. The mean grain size and sorting is the most sensitive to sedimentary environment.
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Received: 03 June 2013
Published: 20 May 2014
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Corresponding Authors:
李生宇（Email：lishy_hb@163.com)
E-mail: lishy_hb@163.com
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Cite this article:
Jia Wenru, Li Shengyu, Gao Xiaoyang, Wang Ningbo, Wang Shijie, Tian Ye, Liu Jianyu, Mao Wenlian, Tang Jinfeng. The Foliar Dust Grain Size Characteristics of Different Plant Species in the Central Taklimakan Desert. JOURNAL OF DESERT RESEARCH, 2014, 34(3): 658-665.
URL:
http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00369 OR http://www.desert.ac.cn/EN/Y2014/V34/I3/658
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2014, Vol. 34 
