Multi-element dataset from a 3000-year soil chronosequence in the Yangtze River floodplain

This dataset was collected to test the hypothesis that long-term land reclamation and different land-use types significantly affect the accumulation, migration, and coupling behavior of multiple soil elements. Soil samples were collected from dryland, paddy fields, and coastal tidal flats, with a consistent sampling depth of 0–20 cm. The concentrations of more than 40 elements, including rare earth elements (REEs), heavy metals, and other trace elements, were determined using ICP-MS after acid digestion. This dataset can be used to evaluate how land-use changes influence soil elemental cycling, and it is suitable for studies in biogeochemistry, environmental assessment, and sustainable land management. Sufficient metadata and method descriptions are provided to allow others to interpret and reuse the data effectively.

本数据集旨在验证如下假说：长期土地开垦与不同土地利用类型会显著影响多种土壤元素的累积、迁移及耦合行为。研究人员从旱地、水田与沿海潮滩采集土壤样品，统一采样深度为0–20 cm。经酸消解处理后，采用电感耦合等离子体质谱法（ICP-MS）测定了包括稀土元素（REEs）、重金属及其他微量元素在内的40余种元素的浓度。本数据集可用于评估土地利用变化对土壤元素循环的影响，适用于生物地球化学、环境评估及土地可持续管理相关研究。数据集附带充足的元数据与方法学描述，可供其他研究人员有效解读与复用该数据。