Data and analysis datasets for "Seasonal reorganization of hydraulic accessibility shifts water uptake from soil to weathered bedrock in Platycladus orientalis"

This repository contains the datasets supporting the manuscript entitled “Seasonal reorganization of hydraulic accessibility shifts water uptake from soil to weathered bedrock in Platycladus orientalis”. The archive includes:(1) borehole and profile data used to characterize subsurface stratigraphy, groundwater non-occurrence within the observation depth, and trench layout;(2) soil and weathered-bedrock physical and hydraulic property datasets, including water-retention and conductivity-related data;(3) continuous monitoring datasets for precipitation, profile water content, water potential, sap flow, and soil-/bedrock-to-canopy water-potential differences;(4) root distribution and root–substrate relationship datasets;(5) stable isotope datasets and source-partitioning results used to quantify seasonal shifts in water uptake from soil and weathered bedrock. The study was conducted in a mature Platycladus orientalis stand at the Beijing National Forest Ecosystem Research Station, northern China, during 2024. The datasets support analyses of root occurrence in weathered bedrock, seasonal changes in hydraulic accessibility, and shifts in plant water-source use between soil and weathered bedrock. File-level notes, variable descriptions, and workflow information are provided in the repository documentation. No custom software package was developed for this study; analyses were conducted using standard statistical and ecohydrological workflows as described in the manuscript and repository files.本仓库包含支撑题为《侧柏水力可达性季节重组驱动水分吸收从土壤向风化基岩转移》的研究论文的数据集。 本存档包含以下内容： (1) 用于表征地下地层结构、观测深度内无地下水分布以及探槽布局的钻孔与剖面数据； (2) 土壤与风化基岩的物理及水力特性数据集，涵盖持水性能与导水性能相关数据； (3) 降水、剖面含水量、水势、液流以及土壤/基岩与冠层间水势差的连续监测数据集； (4) 根系分布与根系-基质关系数据集； (5) 用于量化侧柏水分吸收从土壤向风化基岩的季节转移的稳定同位素数据集与源分割分析结果。 本研究于2024年在中国北方北京国家森林生态系统研究站的成熟侧柏林分中开展。本数据集可支撑以下分析：风化基岩内根系分布、水力可达性的季节变化，以及植物水分来源在土壤与风化基岩间的转移情况。 仓库文档中提供了文件级说明、变量描述与工作流程信息。本研究未开发定制软件包，所有分析均采用论文与仓库文件中所述的标准统计与生态水文工作流程完成。