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冰川冻土  2000 

乌鲁木齐河源冬季积雪淋溶作用的实验结果

, PP. 362-365

Keywords: 乌鲁木齐河源,冬季积雪淋溶实验,CF值,淋溶择优性

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Abstract:

乌鲁木齐河源冬季积雪样品的对比淋溶实验结果表明,积雪最初融水中发生离子富集现象,尤其对于经过多次融冻循环的积雪样品,Cl-,NO3-和SO42-的最大浓缩系数可分别高达2.7,4.0和4.5,因此有理由认为积雪融化是产生淋溶现象的先决条件,但发生该现象的根本原因在于积雪内不同离子成分的存在位置有所差异,并且融-冻循环过程可增强积雪的淋溶作用程度及其淋溶择优性.

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