A global metadata of the influence of cover crops on key soil hydraulic properties.

This dataset provides a global metadata of field studies investigating the influence of cover crops (CCs) on six soil key hydraulic properties, namely, total porosity, infiltration rate, saturated hydraulic conductivity, water retention at field capacity and permanent wilting point, and available water holding capacity. The dataset contains 1007 pairwise observations (CC vs. no‑CC) from 146 peer‑reviewed field studies along with their bibliographic, geographic (country, continent, latitude, longitude, Köppen–Geiger climate), soil (texture, bulk density, soil organic carbon), climate (mean annual precipitation, mean annual temperature), and management variables (cover crop species and functional group, cash crop, crop rotation, tillage, cover crop biomass at termination, termination method, residue fate, years of cover cropping). Continuous response variables are standardized to common units and categorical variables are harmonized into defined classes. The full description and methodological details of the dataset is provided in the associated Data in Brief article “A global metadata of the influence of cover crops on key soil hydraulic properties”本数据集为一项全球元数据集，整合了针对覆盖作物（cover crops, CCs）对六项核心土壤水力特性影响开展的田间试验研究数据，共包含来自146项同行评议田间研究的1007组成对观测值（覆盖作物组与无覆盖作物组）。所述六项核心土壤水力特性分别为总孔隙度、入渗速率、饱和导水率、田间持水量、永久萎蔫点持水量与有效持水量。该数据集附带各研究的文献信息、地理参数（国家、大洲、纬度、经度、柯本-盖格气候分类（Köppen–Geiger climate））、土壤参数（土壤质地、容重、土壤有机碳含量）、气候参数（年平均降水量、年平均气温），以及管理变量（覆盖作物物种与功能群、经济作物、作物轮作制度、耕作方式、覆盖作物终止种植时的生物量、覆盖作物终止方式、秸秆归宿、覆盖作物种植年限）。其中，连续响应变量已统一标准化至通用单位，分类变量已规整至预设类别。本数据集的完整说明与方法学细节详见关联的《数据简报》（Data in Brief）文章，该文章原英文标题为"A global metadata of the influence of cover crops on key soil hydraulic properties"，其中文译名为《覆盖作物对核心土壤水力特性影响的全球元数据集》。