J4 ›› 2010, Vol. 28 ›› Issue (4): 467-474.

• 综述 • 上一篇    下一篇

西北地区气候与环境变化影响沙尘暴的研究进展

沈洁1,2, 李耀辉2, 朱晓炜3,2   

  1. (1.兰州大学大气科学学院,甘肃兰州730000;2.中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730020;3.南京信息工程大学大气科学学院,江苏南京210044)
  • 收稿日期:2010-07-05 修回日期:2010-10-27 出版日期:2010-12-31 发布日期:2010-12-31
  • 作者简介:沈洁(1986-),女,陕西户县人,硕士,主要从事干旱气象与沙尘暴研究工作.E-mail:shenjie_9@126.com
  • 基金资助:

    国家自然科学基金项目“西北沙尘暴关键区近地面起沙特征的观测与数值研究”(40645027);973计划前期研究专项课题“民勤的生态变化对(风蚀)起沙影响的特征观测与数值基础研究”共同资助

Influence of Climate and Enviroment Change on Dust Storm in Northwest China

SHEN Jie 1,2 ,I Yaohui2,ZHU Xiaowei2,3
  

  1. (1.College of Atmospheric Science,Lanzhou University,anzhou 730000,China;2.Institute of Arid Meteorology,Key  (Open)Laboratory of Arid Climatic Change and Reducing Disaster of(CMA)Gansu Province,Lanzhou 730020,China;3.College of Atmospheric Science,Nanjing University of Information Science&Technology,Nanjing 210044,China)
  • Received:2010-07-05 Revised:2010-10-27 Online:2010-12-31 Published:2010-12-31

摘要:

中国西北地区生态环境极为脆弱,由于常年水资源不足,荒漠化成为该区域主要的生态环境问题。根据诸多学者对西北地区的研究,总结了我国西北地区生态环境与气候变化的特征,以及未来发展趋势。由于气候、环境变化及沙尘暴频次之间存在着一定的耦合关系,在此基础上,通过对影响沙尘暴频次的气候因子与其相关性研究的简要阐述,并结合相关论点,来探讨西北地区气候与环境变化如何影响沙尘暴的发生发展。相关研究表明,西北地区的大风、降水、下垫面状况等都直接影响着沙尘暴的发生发展,沙尘暴发生的频率和强度与沙尘源区的状况及其气候与生态环境变化都具有密切联系。其中,在一定的下垫面条件下,大风是影响较大的因子,降水的增加对沙尘暴有一定的抑制作用,气温通过大气环流的形式间接影响沙尘暴,土壤湿度则是通过改变植被覆盖、地表状况来影响沙尘暴。

关键词: 西北地, ;气候变化, 生态环境, 沙尘暴

Abstract:

According to many scholars’studies on the Northwest China,this article summed up the ecological environment,climate hange features and trends in the Northwest China.Due to some coupling relationship existing between climate,environmental change nd sandstorm frequency,the paper briefly described some climatic factors influencing dust storm frequency,and combined with the elevant arguments to explore the climate and environment changes how to impact on occurrence and development of sandstorm in Northwest China.Many researches show that the development of dust storms is directly affected by the wind,precipitation and status of underlying surface,etc.The frequency and intensity of dust storms are closely related to the natural conditions and climate of sandstorm ources,and gale is a bigger influence factor under certain underlying surface condition.The increase of precipitation has a certain inhibitory effect on sandstorm,the temperature has the indirect effect through atmospheric circulation on duststorm,and soil moisture’s nfluence on sandstorm by changing the vegetation cover,surface condition.

Key words: Northwest China, climate change, ecological environment, dust storm

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