Characteristics of the lower layer of sandstorms in the Minqin desert-oasis zone

详细信息    查看全文

• 作者：Ming Zhao (1) (2)
  KeJie Zhan (1) (2)
  ZiHui Yang (1) (2)
  ErTian Fang (1) (2)
  GuoYu Qiu (3)
  QiangQiang Wang (1) (2)
  YinChang Zhang (1) (2)
  ShuJiang Guo (1) (2)
  AiDe Li (1) (2)
  JingChun Zhang (1) (2)
  
• 关键词：Minqin ; the lower layer ; sand ; dust ; horizontal flux ; vertical deposition
• 刊名：Science China Earth Sciences
• 出版年：2011
• 出版时间：May 2011
• 年：2011
• 卷：54
• 期：5
• 页码：703-710
• 全文大小：922KB
• 参考文献：1. Guo Y P, Yuan X, He F. Preliminary study on the cause and measure of sand and dust storm (in Chinese). Arid Environ Monitoring, 2000, 14: 167-71
  2. Sun J, Li Z C. A Tentative study of the forecasting method of the dust storms in the Northwest of China (in Chinese). Meteorol Monthly, 2001, 27: 19-4
  3. Shao Y, Dong C H. A review on East Asian dust storm climate, modeling and monitoring. Glob Planet Change, 2006, 52: 1-2 CrossRef
  4. Zhang K C, Qu J J, Zu R P, et al. Environmental characteristics of sandstorm of Minqin Oasis in China for recent 50 years. J Enriron Sci, 2005, 17: 857-60
  5. Park S U, In H J. Parameterization of dust emission for the simulation of the yellow sand (Asian dust) event observed in March 2002 in Korea. J Geophys Res, 2003, 108, doi: 10.1029/2003JD003484
  6. Xuan J, Irina N S. Characterization of sources and emission rates of mineral dust in Northern China. Atmos Environ, 2002, 36: 4863-876 CrossRef
  7. Tegen I, Harrison S P, Kohfeld K, et al. Impact of vegetation and preferential source areas on global dust aerosol: Results from a model study. J Geophys Res, 2002, 107, doi: 10.1029/2001JD000963
  8. Murayama T, Sugimoto N, Uno I, et al. Ground-based network observation of Asian dust events of April 1998 in east Asia. J Geophys Res, 2001, 106: 18345-8359 CrossRef
  9. Tratt D M, Frouin R J, Westphal D L. April 1998 Asian dust event: A southern California perspective. J Geophys Res, 2001, 106: 18371-8379 CrossRef
  10. Husar R B, Tratt D M, Schichtel B A, et al. Asian dust events of April 1998. J Geophys Res, 2001, 106: 18317-8330 CrossRef
  11. Xuan J, Liu G L, Du K. Dust emission inventory in Northern China. Atmos Environ, 2000, 34: 4565-570 CrossRef
  12. Duce R A, Unni C K, Ray B J, et al. Long-range atmospheric transport of soil dust from Asia to the Tropical North Pacific: Temporal variability. Science, 1980, 209: 1522-524 CrossRef
  13. Che Z H, Zhang X Y, Li Y, et al. Calculations of dust emission flux in northern deserts of China by DPM Model (in Chinese). J Arid Land Resour Environ, 2005, 19: 49-5
  14. Husar, R B, Tratt D M, Schichtel B A, et al. Asian dust events of April 1998. J Geophys Res, 106: 18317-8330, doi: 10.1029/2000JD900788
  15. Richard L R, James C Y, Marith R, et al. Dust emission from wet and dry playas in the Mojave Desert, USA. Earth Surf Process Landf, 2007, 32: 1811-827 CrossRef
  16. Wang X M, Dong Z B, Yan P, et al. Surface sample collection and dust source analysis in northwestern China. Catena, 2005, 59: 35-3 CrossRef
  17. Liu X D, Yin Z Y, Zhang X Y, et al. Analyses of the spring dust storm frequency of northern China in relation to antecedent and concurrent wind, precipitation, vegetation, and soil moisture conditions. J Geophys Res, 2004, 109, doi: 10.1029/2004JD004615
  18. Zou X K, Zhai P M. Relationship between vegetation coverage and spring dust storms over northern China. J Geophys Res, 2004, 109, doi: 10.1029/2003JD003913
  19. Engelstaedter S, Kohfeld K E, Tegen I, et al. Controls of dust emissions by vegetation and topographic depressions: An evaluation using dust storm frequency data. Geophys Res Lett, 2003, 30, doi: 10.1029/2002GL016471
  20. Qian Y B, Wu Z N, Yang Q, et al. Ground-surface conditions of sand-dust event occurrences in the southern Junggar Basin of Xinjiang, China. J Arid Environ, 2007, 70: 49-2 CrossRef
  21. Fang Y D, Shi P J, Zhu A J, et al. Analysis of connection between dust storm and climate factors in northern China (in Chinese). J Nat Disasters, 2006, 25: 13-8
  22. Li N, Du Z X, Xu Y J, et al. A contribution of soil moisture and wind speed to occurrence of dust storms (in Chinese). J Nat Disasters, 2007, 16: 1-
  23. Song Y, Liu L Y, Yang P, et al. Influence of five types underlying surface on sand-dust storm in northern China (in Chinese). J Soil Water Conservation, 2005, 19: 15-8
  24. Joseph P H. Influence of vegetation cover and crust type on wind-blown sediment in a semi-arid climate. J Arid Environ, 2004, 58: 167-79 CrossRef
  25. Chen W, Fryrear D W. Sedimentary characteristics of a haboob dust storm. Atmos Res, 2002, 61: 75-5 CrossRef
  26. Goossens D, Offer Z Y. Wind tunnel and field calibration of six aeolian dust samplers. Atmos Environ, 2000, 34: 1043-057 CrossRef
  
• 作者单位：Ming Zhao (1) (2)
  KeJie Zhan (1) (2)
  ZiHui Yang (1) (2)
  ErTian Fang (1) (2)
  GuoYu Qiu (3)
  QiangQiang Wang (1) (2)
  YinChang Zhang (1) (2)
  ShuJiang Guo (1) (2)
  AiDe Li (1) (2)
  JingChun Zhang (1) (2)
  
  1. Gansu Minqin National Station for Desert Steppe Ecosystem Studies, Wuwei, 733000, China
  2. Gansu Desert Control Research Institute, Wuwei, 733000, China
  3. Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
  
• ISSN：1869-1897

文摘

By measuring the sand-dust flux, vertical deposition, and the wind velocity throughout 19 sandstorms in the Minqin region, we quantitatively analyzed the horizontal distribution and vertical variation in sandstorm characteristics under different land cover conditions. The effect of different land cover on mitigating sandstorms was also investigated. The results indicated that, in the surface layer ranging from 0-0 m, the intensity of sand-dust horizontal flux and concentration of sand-dust decreased with the increase of the height in the desert and the edge of oasis, whereas the two physical quantities increased slightly with the increase of the height in the oasis. The two physical quantities obey power function well under all three cover conditions. Moreover, in the desert and at the edge of oasis, the sand-dust vertical deposition decreased with the increase of the height. But a partial unimodal distribution at the oasis site and the maximum deposition occurred at the height of 9 m, which corresponds to the middle height of farmland protection forest. The annual flux that passed through a section of 1 m in width and 50 m in height was 9169 kg in the desert, 5318 kg at the edge of oasis, and 2345 kg in the oasis. And the annual fluxes at the edge of oasis and in the oasis are 42% and 74% less, respectively, than that in the desert. This implies that the wind break forest significantly reduced the intensity of sandstorms.