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首页> 外文期刊>Regional Environmental Change >Temporal and spatial characteristics of dust storms in the Xilingol grassland, northern China, during 1954-2007
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Temporal and spatial characteristics of dust storms in the Xilingol grassland, northern China, during 1954-2007

机译：1954-2007年中国北方锡林郭勒草原沙尘暴的时空特征

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摘要

Temporal and spatial characteristics of dust storms in the Xilingol grassland of northern China were explored in this paper, based on data of dust storms from the China Meteorological Data Sharing Service System. During the period of 1954-2007, the total dust storm events (DSE) for the Xilingol grassland decreased from the 1960s to the 1990s, and abnormally increased in the 2000s with clear inter-annual and inter-decadal variations as well as spatial differences. The annual mean DSE in the northwest part was generally more than those in the southeast part of Xilingol grassland, with the DSE increasing significantly in the northwestern part of Xilingol grassland in 2000s. The wind speed has a weak correlation with frequency, duration time, and intensity of DSE during the last decades. The influence of spring vegetation condition on the frequency of DSE should be given more; attention, especially in the northwest part of the Xilingol grassland. The threshold wind speeds of DSE in different sub-regions of the study area range between 7.0 and 12.8 m/s. Maximum 10-min average wind speeds during DSE tended to decline between 1980 and 2007. The abnormally frequent and strong DSE occurring with lower wind speeds in the 2000s were probably closely related to local vegetation change and serious desertification.
机译：本文基于中国气象数据共享服务系统的沙尘暴数据，探讨了北方锡林郭勒草原沙尘暴的时空特征。在1954-2007年期间，锡林郭勒草原的沙尘暴总事件（DSE）从1960年代到1990年代有所减少，在2000年代异常增加，具有明显的年际和年代际变化以及空间差异。西北地区的年平均DSE一般高于锡林郭勒草原的东南部，而锡林郭尔草原的西北地区的DSE在2000年代显着增加。在过去的几十年中，风速与频率，持续时间和DSE强度之间的相关性很弱。春季植被状况对DSE频率的影响应该更多。注意，尤其是在锡林郭勒草原的西北部。在研究区域的不同子区域中，DSE的阈值风速在7.0和12.8 m / s之间。 DSE期间的最大10分钟平均风速在1980到2007年间趋于下降。在2000年代，低风速下异常频繁和强烈的DSE发生可能与当地的植被变化和严重的荒漠化密切相关。

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  • 来源
    《Regional Environmental Change》 |2013年第1期|43-52|共10页
  • 作者

    Shulin Liu; Tao Wang; David Mouat;

  • 作者单位

    Key Lab. Desert and Desertification, Chinese Academy of Sciences, Lanzhou 730000, China,Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320 West Donggang Road, Lanzhou 730000, Gansu Province, China,Division of Earth and Ecosystem Sciences, Desert Research Institute, Reno, NV 89512, USA;

    Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320 West Donggang Road, Lanzhou 730000, Gansu Province, China;

    Division of Earth and Ecosystem Sciences, Desert Research Institute, Reno, NV 89512, USA;

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  • 正文语种 eng
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  • 关键词

    dust storm events (DSE); temporal and spatial characteristics; vegetation change; xilingol grassland; Northern China;

    机译：沙尘暴事件（DSE）;时空特征;植被变化;锡林郭勒草原中国北方;

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