PRELIMINARY STUDY ON THE ENVIRONMENTAL BACKGROUND VALUES OF GROUNDWATER IN MIDDLE YARLUNG ZANGBO RIVER BASIN, TIBET
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摘要: 在分析对比国内外研究方法的基础上，选择数理统计方法，通过最广泛的数理统计法的应用原则、数据检验、背景值取值等问题的论述，对西藏"一江三河"地区地下水水质指标TDS，Ca2+，Mg2+，Na+环境背景值进行研究，并初步探讨了它们的空间分布规律及控制因素.结果表明，地形地貌、区域水动力条件等因素对研究区地下水指标的空间分布起主要控制作用.该结果为评价西藏"一江三河"地区地下水污染状况提供科学的依据.Abstract: Based on the analysis and comparison of domestic and foreign research methods, with discussion of application principle, data verification and background values, the mathematical statistics are adopted to study the environmental background values of quality indexes such as TDS, Ca2+, Mg2+ and Na+ of the groundwater in Middle Yarlung Zangbo River Basin of Tibet, as well as the spatial distribution and controlling factors of the indexes. The results show that spatial distribution is mainly affected by topography and regional hydrodynamic conditions, which provides scientific references for the evaluation on groundwater pollution status in the study area.
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Key words:
- environmental background value /
- groundwater /
- mathematical statistics /
- Yarlung Zangbo River /
- Tibet
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