The datasets used in global research literature to assess the modeling accuracy of remote sensing estimates of soil salinity across various locations.

This study conducted a detailed literature search on remote sensing monitoring of soil salinity using a specific combination of keywords in the Web of Science database. Through the search for "soil salt content (Topic) AND remote sensing (Topic) AND 2000 - 2024 (Year Published)", a total of 227 related papers were retrieved. Similarly, using the keywords "soil salinization (Topic) AND remote sensing (Topic) AND 2000 - 2024 (Year Published)", 477 related papers were acquired. Additionally,
the search for "soil salinity (Topic) AND remote sensing (Topic) AND 2024 (Year Published)" yielded 77 papers. The query "soil salinity (Topic) AND remote sensing (Topic) AND 2000 - 2018 (Year Published)" resulted in 750 papers, while employing "soil salinity (Topic) AND remote sensing (Topic) AND 2019 - 2023 (Year Published)" produced 991 papers. By integrating these search results, a total of 2,522 academic papers related to remote sensing monitoring of soil salinity were identified, covering studies from 2000 to June 2024. For the 2,522 papers on remote sensing salinization, the screening was conducted based on the following criteria: the papers must employ remote sensing technology, use satellite or unmanned aerial vehicle (UAV) data, and estimate surface soil salinity using modeling techniques. Additionally, the papers must provide details on the sampling depth, sensor type and name, sensor spatial resolution, the data volume of both the modeling and validation sets, the model type, the environmental covariates associated with the model, methods of measuring soil salinity, and the R² value of the validation or test set. As a result, 84 papers were selected.

本研究以Web of Science数据库为检索平台，采用特定关键词组合开展土壤盐度遥感监测领域的系统性文献调研。以“土壤含盐量（主题）与遥感（主题）与2000-2024（发表年份）”为检索式，共获取相关学术论文227篇。同理，采用关键词组合“土壤盐渍化（主题）与遥感（主题）与2000-2024（发表年份）”进行检索，共获得477篇相关文献。此外，以“土壤盐度（主题）与遥感（主题）与2024（发表年份）”为检索条件，共检索得到77篇文献。以“土壤盐度（主题）与遥感（主题）与2000-2018（发表年份）”检索获得750篇文献，而采用“土壤盐度（主题）与遥感（主题）与2019-2023（发表年份）”则检索出991篇文献。整合上述所有检索结果后，本研究共得到2522篇与土壤盐度遥感监测相关的学术论文，研究时段覆盖2000年至2024年6月。针对这2522篇土壤盐渍化遥感相关文献，本研究依据以下标准开展筛选：文献需采用遥感技术，使用卫星或无人机（Unmanned Aerial Vehicle, UAV）数据，并通过建模手段估算地表土壤盐度；同时，文献需详细记录采样深度、传感器类型与名称、传感器空间分辨率、建模与验证集的数据量、模型类型、模型关联的环境协变量、土壤盐度测量方法，以及验证集或测试集的R²值。最终，共筛选出84篇符合要求的文献。