Hydrological Connectivity and Ecohydrological Processes in Oasis Wetlands Database (HCI_WetlandDB)

The dataset HCI_WetlandDB contains long-term ecohydrological observations collected from oasis wetlands in northwestern China. It integrates daily meteorological data (precipitation and evapotranspiration), soil water content at multiple depths, groundwater depth, salt efflorescence, soil physicochemical properties, vegetation diversity, and soil microbial diversity, together with correlation matrices linking hydrological connectivity to soil–plant–microbial processes. This dataset provides a comprehensive basis for evaluating the effects of hydrological connectivity (HCI) on soil biogeochemistry, vegetation community structure, and ecosystem stability under arid climate conditions. The data are available as an Excel file with eight thematic modules, each corresponding to one component of the ecohydrological system. Researchers may use this dataset to reproduce the analyses in the manuscript, conduct meta-analyses, or further explore the multi-scale interactions of hydrology, vegetation, and soil in arid wetlands.HCI_WetlandDB数据集收录了中国西北绿洲湿地的长期生态水文观测数据。该数据集整合了每日气象数据（含降水量与蒸散发量）、多深度土壤含水量、地下水埋深、盐结皮（salt efflorescence）、土壤理化性质、植被多样性与土壤微生物多样性，以及关联水文连通性（hydrological connectivity）与土壤-植物-微生物过程的相关矩阵。 本数据集为评估干旱气候条件下水文连通性（HCI）对土壤生物地球化学过程、植被群落结构及生态系统稳定性的影响提供了全面的研究基础。该数据集以Excel文件形式发布，包含8个主题模块，每个模块对应生态水文系统的一个组成部分。 研究人员可利用本数据集复现该研究手稿中的分析流程、开展元分析（meta-analysis），或进一步探索干旱湿地中水文、植被与土壤的多尺度交互作用。