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Impact factors of soil wind erosion in the center of Taklimakan Desert

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The development and progress of soil wind erosion are influenced by the factors of climate, terrain, soil and vegetation, etc. This paper, taking Tazhong region, a town in the centre of the Taklimakan Desert, as an example and using comparative and quantitative methods, discussed the effects of climate, surface roughness (including vegetation cover) and surface soil properties on soil wind erosion. The results showed that the climate factor index C of annual wind erosion is 28.3, while the maximum of C is 13.9 in summer and it is only 0.7 in winter. The value of C has a very good exponential relationship with the wind speed. In Tazhong region, the surface roughness height is relatively small with a mean of 6.32 × 10-5 m, which is in favor of soil wind erosion. The wind erosion is further enhanced by its sandy soil types, soil par-ticle size, lacking of vegetation and low soil moisture content. The present situation of soil wind erosion is the result of concurrent effects of climate, vegetation and surface soil properties.

Taklimakan Desertroughnessparticle sizesoil moisture contentsoil wind erosion

Qing HE、XingHua YANG、Ali Mamtimin、ShiHao TANG

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Istitute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China

Desert Atmosphere and Environment Observation Experiment of Taklimakan Station, Tazhong 841000, China

National Satellite Meteorological Center, China Meteorological Administration, Beijing100081, China

National key Technology R & D Program国家自然科学基金Xinjiang Uygur Autonomous Region Science and Technology Key Project

2008BAC40B05-0140775019200833119

2011

10.3724/SP.J.1227.2011.00009

干旱区科学
中国科学院新疆生态与地理研究所,科学出版社

干旱区科学

SCI
影响因子：1.743
ISSN：1674-6767
年,卷(期)：2011.3(1)
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