Data for: Miscanthus × giganteus changes soil structure and increases maximum water holding capacity

The data provided include results from a comparative study evaluating the impact of Miscanthus × giganteus (miscanthus) versus maize on soil structural properties and maximum water holding capacity (MWHC) across two Iowa sites. The dataset includes MWHC values determined using the Funnel Filter Paper Drainage (FFPD) method, as well as additional measurements of MWHC following structural disruption of the soil to isolate the effect of aggregation. It also contains three-dimensional micro-computed tomography (microCT) data used to quantify total porosity and pore size distribution (PSD) of soil aggregates at a 5 µm resolution. All data are provided as raw replicate-level measurements, organized by site, crop, and depth, along with processed summary files in table form in CSV (.csv) format to support reproducibility and downstream analysis.

本数据集包含一项对比研究的结果，该研究评估了巨芒草（Miscanthus × giganteus）与玉米对美国艾奥瓦州两个试验点土壤结构特性及最大持水量（maximum water holding capacity, MWHC）的影响。数据集涵盖采用滤纸漏斗排水法（Funnel Filter Paper Drainage, FFPD）测定的最大持水量数据，以及为分离团聚体效应而开展土壤结构破坏实验后测得的额外最大持水量数据。此外还包含分辨率为5 µm的三维显微计算机断层扫描（three-dimensional micro-computed tomography, microCT）数据，用于量化土壤团聚体的总孔隙度与孔隙大小分布（pore size distribution, PSD）。所有数据均为原始重复测量值，按试验地点、作物种类及土层深度进行分类整理，同时附带CSV（.csv）格式的表格化处理汇总文件，以支持研究可重复性与下游分析工作。