A database of soil thermal conductivity incorporating salts effects

Under the dual pressures of climate change and improper fertilization, soil salinization has become increasingly severe and has exerted adverse impacts on agricultural production. Solutes modify soil thermal properties by influencing the soil liquid phase, the contact area between soil particles, and soil structure. Increasing the concentration of soil solution generally leads to a decreasing trend in soil thermal conductivity, although this pattern may vary depending on the specific conditions of the soil solution. Due to the complexity of measurement procedures, existing studies have not yet provided systematic measurements or summarized patterns regarding the effects of multiple solute types and wide concentration ranges on soil thermal conductivity. Therefore, this study retrieved relevant literature from the Web of Science and CNKI databases and extracted the corresponding data to construct a soil thermal conductivity database under solute influence, with the aim of providing data support for subsequent salinized soil management.在气候变化与不合理施肥的双重压力下，土壤盐渍化问题日趋严峻，对农业生产造成了不利影响。溶质通过影响土壤液相、土壤颗粒间接触面积以及土壤结构，改变土壤热特性。通常而言，土壤溶液浓度升高会使土壤导热率（soil thermal conductivity）呈下降趋势，但该规律可能因土壤溶液的具体条件而异。由于测量流程较为复杂，现有研究尚未针对多种溶质类型与宽浓度范围下土壤导热率的变化规律开展系统测量与总结。因此，本研究从Web of Science与中国知网（CNKI）数据库中检索相关文献并提取对应数据，构建了溶质影响下的土壤导热率数据库，旨在为后续盐渍化土壤的治理提供数据支撑。