Aeolian Dynamics Environments Near Earth Surface in Desert-Oasis Transitional Zone of Dunhuang Area
Author:
  • Article
  • | |
  • Metrics
  • |
  • Reference [19]
  • |
  • Related
  • |
  • Cited by [1]
  • | |
  • Comments
    Abstract:

    [Objective] The distribution pattern of sand-driven wind regimes, drift potentials, sand flux and particle size along the desert oasis transitional zone in the Dunhuang oasis adjacent to Mingsha Mountain was investigate in order to provide a theoretical basis for clarifying the process of aeolian sand in desert and oasis regions. [Methods] Based on the data from the synchronous wind velocity, sand flux and the size of sand grains, the characteristics of aeolian sand environments were calculated along the desert oasis transitional zone. [Results] Because of the differences of the material composition, spatial structure and hydrothermal conditions, wind velocity gradient and cumulative time of sand-driven wind existed significant differences. By the interaction of the desert and oasis, two dominant winds existed desert-oasis transitional zone. From the point of near surface granularity characteristics along the distribution, coarse sand content gradually reduced and silt and clay content increased relatively from the desert to the oasis. Desert-oasis transitional zone was the important part of the ecosystem, and had significance in maintaining a stable transition. [Conclusion] For the oasis sand hazard prevention and control, we should give full consideration to the role of regulation and buffering of desert-oasis transitional zone in view of atmospheric circulation.

    Reference
    [1] 文子祥,董光荣,屈建军.应重视和加强我国沙漠绿洲的研究[J].地球科学进展,1996,11(3):270-274.
    [2] 胡隐樵,左洪超.绿洲环境形成机制和干旱区生态环境建设对策[J].高原气象, 2003,22(6):537-544.
    [3] 韩德林.新疆人工绿洲[M].北京:中国环境科学出版社,2000.
    [4] Wang Yuang, Li Yan. Land exploitation resulting in soil salinization in a desert-oasis ecotone[J]. Catena, 2012, 100(1):50-56.
    [5] Aosier B, Tsuchiya K, Kaneko M, et al. Land cover of oases and forest in Xinjiang, China retrieved from ASTER data[J]. Advances in Space Research, 2007, 39(1):39-45.
    [6] Jia Baoquan, Zhang Zhiqiang, Ci Longjun, et al. Oasis land-use dynamics and its influence on the oasis environment in Xinjiang, China[J]. Journal of Arid Environments, 2004, 56(1):11-26.
    [7] Salman A B, Howari F M, Sankary M M, et al. Environmental impact and natural hazards on Kharga Oasis monumental sites, Western Desert of Egypt[J]. Journal of African Earth Sciences, 2010, 58(2):341-353.
    [8] Ladji R, Yassaa N, Balducci C, et al. Organic components of Algerian desert dusts[J]. Chemosphere, 2010, 81(7):925-931.
    [9] 刘树华,刘和平,胡予,等.沙漠绿洲陆面物理过程和地气相互作用的数值模拟[J].中国科学(D辑):地球科学,2006,36(11):1037-1043.
    [10] 刑文娟,雷加强,王海峰,等.荒漠-绿洲过渡带风况及输沙势分析[J].干旱区研究,2008,25(6):894-898.
    [11] 杨兴华,何清,霍文,等.策勒绿洲-荒漠过渡带风沙前沿近地面不同方向的输沙特征[J].气干旱区研究,2012,29(6):1100-1104.
    [12] 赵明,詹科杰,杨自辉,等.民勤沙漠-绿洲低空沙尘暴结构特征研究[J].中国科学(D辑):地球科学,2011,41(2):234-242.
    [13] Fryberger S G, Dean G. Dune forms and wind regime[M]//McKee E D. A study of global sand seas. Washington:Government Printing Office, 1979:305-397.
    [14] 姚正毅,屈建军.青藏铁路格尔木-拉萨段风成沙物源及其粒度特征[J].中国沙漠,2012,32(2):300-307.
    [15] 吴霞,哈斯,杜会石,等.库布齐沙漠南缘抛物线形沙丘表面粒度特征[J].沉积学报,2012,30(5):937-944.
    [16] 钱广强,董治宝,罗万银,等.巴丹吉林沙漠地表沉积物粒度特征及区域差异[J].中国沙漠,2011,31(6):1357-1364.
    [17] 王丰年,李保生,王江龙,等.萨拉乌苏河流域MGS2层段粒度与CaCO3记录的千年尺度气候变化[J].地理科学,2012,32(5):596-602.
    [18] 张伟民.金字塔沙丘粒度变化及表面过程的初步研究[J].中国沙漠,2013,33(6):1615-1621.
    [19] 刘陶,杨小平,董巨峰,等.巴丹吉林沙漠沙丘形态与风动力关系的初步研究[J].中国沙漠,2010,30(6):1285-1291.
    Related
    Comments
    Comments
    分享到微博
    Submit
Get Citation

张克存,牛清河,安志山,张伟民,张号.敦煌沙漠-绿洲过渡带近地表风沙动力环境[J].水土保持通报英文版,2015,35(4):8-11,17

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:June 22,2014
  • Revised:June 30,2014
  • Online: April 05,2016