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）与玉米对爱荷华州两个试验点的土壤结构特性及最大持水量（maximum water holding capacity, MWHC）的影响。数据集包含采用漏斗滤纸排水法（Funnel Filter Paper Drainage, FFPD）测定的最大持水量数据，以及经土壤结构破坏以分离团聚体效应后测得的额外最大持水量测定值。此外还包含以5微米分辨率量化土壤团聚体总孔隙度与孔径分布（pore size distribution, PSD）的三维显微计算机断层扫描（three-dimensional micro-computed tomography, microCT）数据。所有数据均为原始重复水平测量值，按试验点、作物类型及土层深度进行整理，并附带.csv格式的表格形式处理汇总文件，以支持研究可重复性及下游分析。