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以新疆准噶尔盆地西部的艾比湖地区为研究区,通过野外降尘监测、采样分析等方法,研究了艾比湖地区含盐粉尘的沉积通量和物质组成特征.结果表明:艾比湖干涸湖底是盐尘的输出源,盐尘的化学组成主要是无水芒硝、白钠镁矾、氯化钠等盐碱粉尘及Cr、Pb、Mn、Cu、Ni等潜在毒性元素.艾比湖地区盐尘的沉积通量约为79~381 g·m-2·a-1,盐的沉积通量约为4~61 g·m-2·a-1.盐尘的粒径分布以2~63μm的粉砂粒级为主,大于63μm的砂粒级所占比例很小.特殊的地形条件、大风天气、稀疏的植被覆盖、疏松的大面积尘源是艾比湖湖底风蚀和盐尘输送的有利条件.
Taking the Lake Aibi region in the west of Junggar Basin in Xinjiang as the study area, the sediment fluxes and the composition of the salt dust in the Aibi Lake area were studied by means of field dust monitoring and sampling analysis. The results show that: It is the output source of salt dust. The chemical composition of salt dust is mainly the potential toxic elements such as anhydrous thenardite, sodium boehmite, sodium chloride and other alkali-alkali dusts, and Cr, Pb, Mn, Cu, Sediment flux of dust is about 79 ~ 381 g · m-2 · a-1, and salt deposition flux is about 4 ~ 61 g · m-2 · a-1. The particle size distribution of salt dust is 2 ~ 63μm Of the silt grading, the percentage of sand grading greater than 63μm is very small.The special terrain conditions, windy weather, sparse vegetation cover and loose large area of dust source are the favorable conditions for wind erosion and salt dust transport at the bottom of Lake Abe .