“十三五”甘肃省降尘时空变化趋势及影响因素

Spatiotemporal Changes and Influencing Factors of Dustfall in Gansu Province During the 13th Five-Year Plan Period

通过分析“十三五”期间甘肃省降尘及相关数据,对甘肃省降尘时空变化情况进行研究,对其变化趋势和影响因素进行分析。“十三五”期间,甘肃省降尘总体呈下降趋势,下降幅度达24.30%,全省植被覆盖指数上升2.03%,降尘与植被覆盖指数负相关性显著。自然来源中,沙尘天气是影响甘肃省降尘的主要因素。城市精细化管理水平的提高可减少降尘人为来源。

In this paper,through the analysis of the dustfall related data of Gansu Province during the 13th Five-Year Plan period,the spatiotemporal changes and influencing factors of dustfall in Gansu Province were studied.During the 13th Five-Year Plan period,the dustfall in Gansu Province generally showed a downward trend,with a decrease range of 24.30%,and the vegetation cover index of the whole province increased by 2.03%.There was a negative correlation between vegetation cover index and dustfall.Among the natural sources,the dust weather was the main factor affecting the amount of dustfall in Gansu Province.The level of urban fine management could reduce the amount of dustfall from human sources.