High frequency monitoring of herbicides in surface water: substance sampling and farmers survey in an intensively farmed headwater catchment in Belgium

A comprehensive dataset is presented that is designed to examine the environmental exposure of surface water pollution by herbicides in an intensively agriculturally used headwater catchment (catchment area 1,032 ha) in Flanders, Belgium. From May 2010 until Dec 2013, stream discharge was measured and water samples were taken at two sampling locations, one at the outlet and one within the catchment. During the 1,325 days the temporal resolution of sampling was at least daily, with subdaily sampling of two or even four samples on 61% of the days. In total 4,350 water samples were analysed for 11 herbicides and one metabolite. Additional meta-information on application practice was collected beginning in autumn 2009 from all farmers working in the study area. Apart from analytical and meta-data we further present links to publicly available spatial data on land use, soils and topography.本数据集为一套综合性研究数据集，旨在探究比利时佛兰德斯（Flanders）某集约化农业利用的源头汇水区（headwater catchment，汇水面积1032公顷）内除草剂引发的地表水污染环境暴露情况。2010年5月至2013年12月期间，研究团队在两个采样点位开展溪流流量（stream discharge）监测与水样采集：一个设于汇水区出口处，另一个位于汇水区内部。在总计1325天的监测周期内，采样时间分辨率至少为每日1次；其中61%的采样天数采用亚日级采样策略，单日采样次数可达2次甚至4次。本次研究共采集4350份水样，针对11种除草剂及1种代谢产物（metabolite）完成了实验室分析检测。自2009年秋季起，研究团队同步收集了研究区域内所有从业农户的农药施用实践相关附加元数据（meta-data）。除分析数据与元数据外，本数据集还提供了研究区土地利用、土壤及地形相关公开空间数据（spatial data）的关联链接。