Data from a meta-analysis of the effects of biochar on hydrological properties of soils with different textures

The database was built by searching literature published on the Web of Science and Google Scholar. The search keywords included biochar and soil hydraulic property and/or soil physical property, and/or water retention, and/or field capacity, and/or wilting point, and/or plant-available water, and/or saturated hydraulic conductivity. A total of 104 articles were selected to form the database, categorize and assign appropriate levels to the collected data, considering both categorical and continuous variables。The data were used to assess the effects of biochar on the hydrological properties of soils with different textures by meta-analysis.本数据库通过检索Web of Science与Google Scholar平台刊载的文献构建而成。检索关键词涵盖生物炭（biochar）、土壤水力特性（soil hydraulic property）、土壤物理特性（soil physical property）、持水性（water retention）、田间持水量（field capacity）、萎蔫点（wilting point）、植物有效水（plant-available water）及饱和导水率（saturated hydraulic conductivity）。最终共筛选得到104篇文献以构建该数据库，同时针对所收集的数据，兼顾分类变量与连续变量两类数据类型，完成了分类与合理分级赋值。该数据集被用于通过元分析（meta-analysis）评估生物炭对不同质地土壤水文特性的影响。