Impacts of groundwater storage variability on soil salinization in a semi-arid agricultural plain

作者：Geng Cui, Yan Liu, Xiaojie Li, Xiaojie Li, Shan Wang, QU Xiang-ning, Lei Wang, Shouzheng Tong, Mingye Zhang, Xiaofeng Li, Xiaofeng Li, Wenqiang Zhang · 发表于：Geoderma · 年份：2025 · DOI：10.1016/j.geoderma.2024.117162 · 被引用次数：38 · 研究领域：Geophysics and Gravity Measurements、Geophysical and Geoelectrical Methods、Soil and Unsaturated Flow

• Groundwater storage in the West Songnen Plain dropped sharply from 2015 to 2021. • Agricultural and socioeconomic development forced a decline in groundwater storage. • Natural and anthropogenic processes jointly drive regional soil salinization patterns. • The impact of groundwater storage on regional medium salinized soils is significant. Soil salinization, which is significantly influenced by groundwater storage dynamics, leads to reduced land productivity, loss of arable land, and degradation of vegetation, thereby posing a substantial threat to global food security and ecosystem functions. The western Songnen Plain (WSP) is one of the world’s three largest concentrations of soda saline-alkaline regions. However, the availability of observed data on groundwater storage dynamics in the WSP remains limited, potentially impeding the evaluation of their impacts on soil salinization processes. This study investigated the impact of groundwater storage variability on soil salinization in the WSP, utilizing multi-source satellite data, the Global Land Data Assimilation System hydrological model data, and ground observation data. Our results demonstrated that groundwater storage anomalies (GWSAs) exhibited cyclical fluctuations from 2002 to 2014, followed by a substantial decline of 13.215 cm equivalent water height from 2015 to 2021. GWSAs exhibited a significant positive relationship with the area of medium-salinized soils that comprised over 56 % of the total salinized soil a...