finally, the integrated control strategy against the sand dust storm is proposed.
最后提出了以植树种草为核心内容的综合防治对策。
meteorological records in the past 50 years indicate that there has been a sharp decrease in sand dust storm frequency, which is in accordance with the decrease in annual mean wind speed.
近50年来多个站点的观测记录表明了沙尘暴的发生频率处于快速下降的过程,这恰好与年均风速的变化趋势较为一致。
the frequency of sand dust storm has a close relation with meanannual wind speed in the arid, and semi-arid area in china.
在中国北方地区的干旱背景下,年均沙尘暴的发生频率与年均风速的相关性较强。
the comparison between the analysis results of the loess samples and the dust aerosol samples shows that this experiment method is very good to do dust source and sand dust storm researches.
黄土样品的分析结果与粉尘气溶胶样品的离子分析结果对比表明,此方法对于探讨粉尘起源以及沙尘暴天气的研究具有重要意义。