Tile drain water chemistry dataset from an enhanced rock weathering field trial at the Energy Farm, University of Illinois

This dataset contains data from filtered waters taken from a tile drain system from a long-standing enhanced rock weathering experiment at the University of Illinois Energy Farm, Urbana-Champaign. Further details relating to the experimental design are available in the following papers: Beerling et al., 2024; Kantola et al., 2023. The data are from 4 experimental plots (each 3.9 ha in size) and 2 crop types, with 1 control and 1 treatment for each crop. One crop is an experimental bioenergy crop (Miscanthus grass), and the other is corn (maize) and soybean rotation. The tile drain waters are collected using an automated sampling system, and on occasion, samples were taken directly from the tile drain system for "in situ" analysis of time-critical species. All waters were filtered to <0.45 µm. Major cations and some trace elements and major anions were measured on the tile train waters collected via the automated sampling system triggered by water flow through the tile drain system. Alkalinity, dissolved inorganic carbon, dissolved organic carbon, total dissolved nitrogen and nutrient analysis were measured on the "in situ" samples. All analysis was carried out at the University of Southampton following methods outlined in Larkin et al., 2022, apart from pH, EC and temperature measurements on the in situ samples, which were carried out onsite at the University of Illinois. For further details, please contact the authors. References mentioned Beerling, D.J., Epihov, D.Z., Kantola, I.B., Masters, M.D., Reershemius, T., Planavsky, N.J., Reinhard, C.T., Jordan, J.S., Thorne, S.J., Weber, J., Val Martin, M., Freckleton, R.P., Hartley, S.E., James, R.H., Pearce, C.R., DeLucia, E.H., Banwart, S.A., 2024. Enhanced weathering in the US Corn Belt delivers carbon removal with agronomic benefits. Proc. Natl. Acad. Sci. 121, e2319436121. https://doi.org/10.1073/pnas.2319436121 Kantola, I.B., Blanc-Betes, E., Masters, M.D., Chang, E., Marklein, A., Moore, C.E., von Haden, A., Bernacchi, C.J., Wolf, A., Epihov, D.Z., Beerling, D.J., DeLucia, E.H., 2023. Improved net carbon budgets in the US Midwest through direct measured impacts of enhanced weathering. Glob. Change Biol. 29, 7012–7028. https://doi.org/10.1111/gcb.16903 Larkin, C.S., Andrews, M.G., Pearce, C.R., Yeong, K.L., Beerling, D.J., Bellamy, J., Benedick, S., Freckleton, R.P., Goring-Harford, H., Sadekar, S., James, R.H., 2022. Quantification of CO2 removal in a large-scale enhanced weathering field trial on an oil palm plantation in Sabah, Malaysia. Front. Clim. 4.本数据集源自伊利诺伊大学厄巴纳-香槟分校能源农场一项长期开展的强化岩石风化（enhanced rock weathering）实验的瓦管排水系统（tile drain system）过滤水样。有关实验设计的更多细节可参阅以下论文：Beerling等人，2024年；Kantola等人，2023年。 本数据集涵盖4个实验样地（单个样地面积为3.9公顷）与2种作物种植模式，每种作物分别设置1个对照组与1个处理组。其中一种作物为实验性生物能源作物芒草（Miscanthus grass），另一种为玉米（corn，即maize）与大豆的轮作体系。研究人员采用自动采样系统收集瓦管排水水样；针对需紧急检测的物种开展原位（in situ）分析的需求，偶尔会直接从瓦管排水系统中手动采集水样。所有水样均经0.45 µm滤膜过滤。通过随瓦管排水流量自动触发的自动采样系统收集的水样，被用于测定主要阳离子、部分微量元素及主要阴离子含量。 针对原位采集的水样，则开展了碱度、溶解无机碳、溶解有机碳、总溶解氮及营养盐分析。所有分析工作均由南安普顿大学按照Larkin等人2022年提出的实验方法完成，唯有原位水样的pH值、电导率（EC）与温度测定是在伊利诺伊大学现场完成的。 如需了解更多细节，请联系论文作者。 参考文献 Beerling, D.J.、Epihov, D.Z.、Kantola, I.B. 等, 2024. 美国玉米带强化岩石风化可实现固碳与农业综合效益. 《美国国家科学院院刊》(Proc. Natl. Acad. Sci.) 121, e2319436121. https://doi.org/10.1073/pnas.2319436121 Kantola, I.B.、Blanc-Betes, E.、Masters, M.D. 等, 2023. 基于强化风化直接影响测定优化美国中西部净碳预算. 《全球变化生物学》(Glob. Change Biol.) 29, 7012–7028. https://doi.org/10.1111/gcb.16903 Larkin, C.S.、Andrews, M.G.、Pearce, C.R. 等, 2022. 马来西亚沙巴油棕种植园大型强化风化田间试验的CO₂移除量量化. 《气候前沿》(Front. Clim.) 4.