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首页> 外文期刊>Journal of Environmental Science and Health >Past and future seasonal variation in pH and metal concentrations in runoff from river basins on acid sulphate soils in Western Finland
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Past and future seasonal variation in pH and metal concentrations in runoff from river basins on acid sulphate soils in Western Finland

机译：芬兰西部酸性硫酸盐土壤流域径流中pH和金属浓度的过去和未来季节性变化

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摘要

Drainage of acid sulphate soils (ASS) increases oxidation, leading to extensive leaching of acidity and metals to rivers (Al, Cd, Cr, Fe, Ni and Zn). This is often apparent during high runoff periods in spring and autumn after long dry periods with low groundwater levels and associated ASS oxidation. Regression models were used to study changes in these water quality variables according to various discharge scenarios. The knowledge of seasonal patterns of water quality variables in future is important for planning land use of the catchments in relation to WFD of European Union. The data showed that river water acidity (pH and metals) increased with discharge, with the correlation being strongest in low runoff periods in winter and summer and less clear in spring. With future climate change, river acidity can increase radically, especially during winters following extremely dry summers, and pH and metal peaks may occur even during winter.
机译：酸性硫酸盐土壤（ASS）的排水增加了氧化作用，导致酸性物质和金属大量浸出到河流（Al，Cd，Cr，Fe，Ni和Zn）中。在长期干旱，地下水位低和伴有ASS氧化之后的春季和秋季的高径流量期间，这通常很明显。回归模型用于根据各种排放情景研究这些水质变量的变化。未来水质变量季节性模式的知识对于与欧盟WFD相关的流域土地利用规划至关重要。数据显示，河水酸度（pH和金属）随排放量增加而增加，相关性在冬季和夏季的低径流时期最强，而春季则不那么明显。随着未来气候的变化，河流的酸度可能会急剧增加，特别是在夏季极为干燥的冬季之后，甚至在冬季也会出现pH和金属峰值。

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  • 来源
    《Journal of Environmental Science and Health》 |2012年第11期|p.1614-1625|共12页
  • 作者

    TUOMAS S. SAARINEN; BJ0RN KL0VE;

  • 作者单位

    Department of Process and Environmental Engineering, Water Resources and Environmental Engineering Laboratory, University of Oulu, Oulu, Finland;

    Department of Process and Environmental Engineering, Water Resources and Environmental Engineering Laboratory, University of Oulu, Oulu, Finland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    river; pH; metals; acid sulphate soils; climate change; hydrology;

    机译：河;pH值金属;酸性硫酸盐土壤;气候变化;水文;

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