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首页> 外文期刊>Aquatic Sciences >Water renewal along the aquatic continuum offsets cumulative retention by lakes: implications for the character of organic carbon in boreal lakes
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Water renewal along the aquatic continuum offsets cumulative retention by lakes: implications for the character of organic carbon in boreal lakes

机译：沿水连续体的水更新抵消了湖泊的累积滞留：对北方湖泊有机碳特征的影响

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摘要

The character of organic carbon (OC) in lake waters is strongly dependent on the time water has spent in the landscape as well as in the lake itself due to continuous biogeochemical OC transformation processes. A common view is that upstream lakes might prolong the water retention in the landscape, resulting in an altered OC character downstream. We calculated the number of lakes upstream for 24,742 Swedish lakes in seven river basins spanning from 56° to 68° N. For each of these lakes, we used a lake volume to discharge comparison on a landscape scale to account for upstream water retention by lakes (T_(n tot). We found a surprisingly weak relationship between the number of lakes upstream and T_(n tot). Accordingly, we found that the coloured fraction of organic carbon was not related to lake landscape position but significantly related to T_(n tot), when we analysed lake water chemical data from 1,559 lakes in the studied river basins. Thus, we conclude that water renewal along the aquatic continuum by lateral water inputs offsets cumulative retention by lakes. Based on our findings, we suggest integrating T_(n tot), in studies that address lake landscape position in the boreal zone to better understand variations in the character of organic carbon across lake districts.
机译：由于连续的生物地球化学OC转化过程，湖水中的有机碳（OC）的特性很大程度上取决于水在景观中以及湖中所花费的时间。常见的观点是上游湖泊可能会延长景观中的水分保留，从而导致下游OC特性发生变化。我们计算了从56°到68°N的七个流域中的24,742处瑞典湖泊的上游湖泊数量。对于每个湖泊，我们使用湖泊体积进行景观规模比较，以解释湖泊上游保水量。 （T_（n tot）。我们发现上游湖泊数量与T_（n tot）之间的关系出乎意料的弱。因此，我们发现有机碳的有色成分与湖泊景观位置无关，而与T_（n n tot），当我们分析所研究流域的1,559个湖泊的湖泊水化学数据时，得出结论，通过侧向水输入沿水连续体进行的水质更新抵消了湖泊的累积滞留量，因此建议对T_ （n tot），研究针对北方地区湖泊景观的位置，以更好地了解整个湖泊地区有机碳特征的变化。

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  • 来源
    《Aquatic Sciences》 |2013年第4期|535-545|共11页
  • 作者

    R. A. Mueller; M. N. Futter; S. Sobek; J. Nisell; K. Bishop; G. A. Weyhenmeyer;

  • 作者单位

    Department of Ecology and Genetics/Limnology, Uppsala University, Norbyvaegen 18D, 752 36 Uppsala, Sweden;

    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), Box 7050, 750 07 Uppsala, Sweden;

    Department of Ecology and Genetics/Limnology, Uppsala University, Norbyvaegen 18D, 752 36 Uppsala, Sweden;

    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), Box 7050, 750 07 Uppsala, Sweden;

    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), Box 7050, 750 07 Uppsala, Sweden;

    Department of Ecology and Genetics/Limnology, Uppsala University, Norbyvaegen 18D, 752 36 Uppsala, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Lake; Landscape; Time; Organic carbon; Colour;

    机译：湖;景观;时间;有机碳颜色;

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