Metals discharged during different flow conditions from a mixed agricultural‐forest catchment (NW Spain)
Metals discharged during different flow conditions from a mixed agricultural‐forest catchment (NW Spain)
复制标题
农林混合流域（西班牙西北部）在不同流动条件下排放的金属
DOI：
--
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
M. T. Taboada
中科院分区：
文献类型：
--
作者：
F. Soto;M. Rodríguez;M. Taboada;M. T. Taboada
金属负荷测定从不同的径流条件下（基流和风暴事件）在农村集水区（西班牙西北部）在4年收集的水样。进行了年度、季节和风暴事件尺度的研究。在所有分析尺度中，输出顺序为Fe > Al > Mn > Zn > Cu。观察到金属负荷的年际、季节和风暴事件尺度变化很大。流中的总金属负荷较高，在基流条件下比在风暴事件，这只代表4%的研究期间的持续时间和25%的径流。在风暴事件期间，铝和铁的负荷占45%的总负荷的研究期间，而锰，铜和锌的负荷分别为42%，33%和24%。这突出了高流量对金属出口的作用。只有四个大型活动出口了活动中运输的每种金属的30%左右。在所有的时间尺度上，普遍的出口颗粒金属溶解的金属观察，更明显的铝，铁和锰比铜和锌。Corbeira集水区的金属出口受到径流的影响，在较小程度上受到降雨量的影响。版权所有© 2014约翰威利父子有限公司.
Metal loads were determined from water samples collected under different streamflow conditions (baseflow and storm events) in a rural catchment (NW Spain) during 4 years. A study at annual, seasonal and storm‐event scales was carried out. In all analysed scales, the export order was Fe > Al > Mn > Zn > Cu. A high inter‐annual, seasonal and storm‐event scale variability of metal load was observed. The total metal loads in stream were higher during baseflow conditions than during storm events, which only represented 4% of the duration of the study period and 25% of streamflow. During storm events, both Al and Fe loads accounted 45% of the total load of the study period, whereas Mn, Cu and Zn loads represented 42%, 33% and 24%, respectively. This highlights the role of high flows on metal export. Only four big events exported around 30% of load of each metal transported in events. At all time scales, a prevalence of export of particulate metals over dissolved metals was observed, more pronounced for Al, Fe and Mn than for Cu and Zn. The export of metals in the Corbeira catchment is influenced by runoff and, to a lesser extent, by the rainfall amount. Copyright © 2014 John Wiley & Sons, Ltd.