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2011年季风期前和季风期后,分别对纳木错湖中两个站点的湖水和周边16条入湖河流进行水样采集,水化学分析结果表明:湖水中各离子含量在季风期后都比季风期前有明显的增加,其中Mg2+在两个站点分别增加46.84%和46.95%,Ca2+分别增加67.02%和75.11%,HCO3-分别增加27.61%和25.02%。河水中大部分离子含量也都表现为季风期后的增加,而F-、Cl-和NO3-则表现为降低趋势。离子含量的动态变化主要受流域内风化作用影响,即风化产物是造成大部分离子含量升高的主要来源,而蒸发作用对湖水离子含量的升高也起一定作用。
Before the monsoon 2011 and the monsoon period, water samples were taken from the lake of two sites in the Nam Co Lake and the surrounding 16 rivers. The chemical analysis of the water shows that the ion content of the lake water after the monsoon period is higher than that of the monsoon Mg2 + increased 46.84% and 46.95% at two sites, Ca2 + increased 67.02% and 75.11% respectively, and HCO3- increased by 27.61% and 25.02% respectively. Most of the ions in the water also showed an increase after monsoon, while F-, Cl- and NO3- showed a decreasing trend. The dynamic change of ion content is mainly affected by the weathering in the basin, that is, the weathering product is the main source of most ion contents, and the evaporation also plays an important role in the increase of ion content in the lake.