Abstract Siberian mires, especially the world’s largest coherent bogs of the Great Vasyugan Mire (Tomsk Region, West Siberian Plain, Russia), play an important role in the regional hydrological cycle, global carbon balance and influence flow formation of the region’s rivers. We revealed the role of natural mires in supplying water to a mire-dominated (80% of the river basin area) Siberian catchment of the Klyuch River that represents typical features of the headwater catchment of the Great Vasyugan Mire, the world’s largest mire in natural and well-preserved conditions. Our research protocol involved an analysis of the electric conductivity of peat water along selected transects of the mire, analysis of groundwater levels and river discharge and electric conductivity of the river water. We used ground-penetrating radar to determine the structure of the peat. We revealed that the examined part of the mire depends solely on the rainwater supply and that minerotrophic groundwater is not present within the area of the research. Average groundwater levels within the mire in the period 2013–2018 reached 0.193 m b.g.l. We also revealed that the natural drainage of mire water does not sustain river discharge throughout the whole year. This means the Klyuch remains an intermittent river dependent on the natural outflow of the mire’s waters, after exceeding the mire’s critical water retention volume. Total retention volume of a mire depends on the peat’s physical features and the mire’s short-term response to excessive thaw and precipitation events. An analysis of river discharge duration curves demonstrated that river discharge can be sustained by the duration reaching from 0.39 up to 0.71 in a year, in dry and wet years, respectively. We concluded that in a specific hydrogeological setup of the mire–river system, natural ombrotrophic mires cannot be considered as systems with a continuous water supply and discharge stabilization. We concluded that the Hortonian vision of infiltration and discharge is not valid in bog dominated basins. In the face of climatic changes in Siberia, we foresee a decrease in the discharge volume from the headwaters of rivers and the increase of river intermittence which may affect total outflow volume, specifically in the upper Ob and Irtysh, by reducing the contribution of surface runoff.

中文翻译：

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评估原始西伯利亚沼泽主导的流域中的泥河相互作用——俄罗斯大瓦休甘泥沼部分的案例研究

摘要 西伯利亚沼泽，特别是大瓦休干泥沼（托木斯克地区，西西伯利亚平原，俄罗斯）的世界上最大的连贯沼泽，在区域水文循环、全球碳平衡和影响该地区河流水流形成中发挥着重要作用。我们揭示了天然沼泽在向以沼泽为主（流域面积的 80%）的 Klyuch 河西伯利亚流域供水方面的作用，该流域代表了世界上最大的自然沼泽 Great Vasyugan Mire 源头流域的典型特征和保存完好的条件。我们的研究协议涉及分析泥炭水沿选定的泥炭横断面的电导率，分析地下水位和河流流量以及河水的电导率。我们使用探地雷达来确定泥炭的结构。我们透露，泥潭的检查部分完全取决于雨水供应，并且研究区域内不存在矿质地下水。2013-2018 年期间泥潭内的平均地下水位达到 0.193 m bgl 我们还透露，泥潭水的自然排水不能维持全年的河流排放。这意味着 Klyuch 仍然是一条断断续续的河流，它依赖于沼泽水的自然流出量，超过了泥潭的临界保水量。泥炭的总滞留量取决于泥炭的物理特征以及泥炭对过度融化和降水事件的短期反应。对河流流量持续时间曲线的分析表明，河流流量可以维持的持续时间分别在旱年和雨年从 0.39 到 0.71 年不等。我们得出的结论是，在泥沼-河流系统的特定水文地质设置中，不能将天然嗜水泥沼视为具有连续供水和排放稳定的系统。我们得出的结论是，Hortonian 对渗透和排放的看法在沼泽主导的盆地中是无效的。面对西伯利亚的气候变化，我们预计河流源头的排放量将减少，河流间歇性增加，这可能会通过减少地表径流的贡献而影响总流出量，特别是在鄂毕河和额尔齐斯河上游. 分别在旱年和雨年。我们得出的结论是，在泥沼-河流系统的特定水文地质设置中，不能将天然嗜水泥沼视为具有连续供水和排放稳定的系统。我们得出的结论是，Hortonian 对渗透和排放的看法在沼泽主导的盆地中是无效的。面对西伯利亚的气候变化，我们预计河流源头的排放量将减少，河流间歇性增加，这可能会通过减少地表径流的贡献而影响总流出量，特别是在鄂毕河和额尔齐斯河上游. 分别在旱年和雨年。我们得出的结论是，在泥沼-河流系统的特定水文地质设置中，不能将天然嗜水泥沼视为具有连续供水和排放稳定的系统。我们得出的结论是，Hortonian 对渗透和排放的看法在沼泽主导的盆地中是无效的。面对西伯利亚的气候变化，我们预计河流源头的排放量将减少，河流间歇性增加，这可能会通过减少地表径流的贡献而影响总流出量，特别是在鄂毕河和额尔齐斯河上游. 我们得出的结论是，Hortonian 对渗透和排放的看法在沼泽主导的盆地中是无效的。面对西伯利亚的气候变化，我们预计河流源头的排放量将减少，河流间歇性增加，这可能会通过减少地表径流的贡献而影响总流出量，特别是在鄂毕河和额尔齐斯河上游. 我们得出的结论是，Hortonian 对渗透和排放的看法在沼泽主导的盆地中是无效的。面对西伯利亚的气候变化，我们预计河流源头的排放量将减少，河流间歇性增加，这可能会通过减少地表径流的贡献而影响总流出量，特别是在鄂毕河和额尔齐斯河上游.