HydroCrowd: a citizen science snapshot to assess the spatial control of nitrogen solutes in surface waters.
HydroCrowd: a citizen science snapshot to assess the spatial control of nitrogen solutes in surface waters.
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DOI：
10.1038/srep16503
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发表时间：
2015-11-12
影响因子：
4.6
通讯作者：
Frede HG
中科院分区：
文献类型：
--
作者：
Breuer L;Hiery N;Kraft P;Bach M;Aubert AH;Frede HG
我们组织了一个众包实验的快照采样活动的形式，以评估氮溶质的空间分布，即硝酸盐，铵和溶解有机氮（DON），在德国地表沃茨。特别是，我们调查（i）众包是否是一个合理的水文采样方法和（ii）人口密度，土壤腐殖质含量和耕地的实际氮溶质浓度和地表水质量的影响。统计分析表明，硝酸盐与耕地（0.46），以及土壤腐殖质含量（0.37），但与人口密度（0.12）弱相关。DON与腐殖质含量（0.14）和耕地（0.13）的相关性较弱，但显著。DON对总溶解氮的平均贡献率为22%。根据欧洲水框架指令，硝酸盐和铵（分别为53%和82%）的样本被归类为水质II级或以上。众包原来是一个有用的方法来评估流溶质的空间分布，因为相当数量的样品收集相对较少的努力。
We organized a crowdsourcing experiment in the form of a snapshot sampling campaign to assess the spatial distribution of nitrogen solutes, namely, nitrate, ammonium and dissolved organic nitrogen (DON), in German surface waters. In particular, we investigated (i) whether crowdsourcing is a reasonable sampling method in hydrology and (ii) what the effects of population density, soil humus content and arable land were on actual nitrogen solute concentrations and surface water quality. The statistical analyses revealed a significant correlation between nitrate and arable land (0.46), as well as soil humus content (0.37) but a weak correlation with population density (0.12). DON correlations were weak but significant with humus content (0.14) and arable land (0.13). The mean contribution of DON to total dissolved nitrogen was 22%. Samples were classified as water quality class II or above, following the European Water Framework Directive for nitrate and ammonium (53% and 82%, respectively). Crowdsourcing turned out to be a useful method to assess the spatial distribution of stream solutes, as considerable amounts of samples were collected with comparatively little effort.