Data from: Groundwater controls on plant community structure and species specific water use strategies in the desert oasis ecotone of the Junggar Basin

The data were systematically collected between May and September 2023 in Jinghe County, Bortala Mongol Autonomous Prefecture, Xinjiang, China, a representative region of arid desert ecosystems. The data encompass four integrated components: (1) stable hydrogen and oxygen isotope (δ2H and δ18O) compositions of diverse water sources, including precipitation, soil water (across vertical profiles), and groundwater; (2) isotopic signatures of xylem water from desert vegetation; (3) soil volumetric water content (%) monitored across multiple experimental plots; and (4) morphological traits of Haloxylon ammodendron, specifically plant height and basal diameter. This comprehensive dataset is designed to support high-level investigations into plant water acquisition strategies, soil-plant-atmosphere continuum (SPAC) interactions, and eco-hydrological processes in extreme arid environments.

本数据集于2023年5月至9月在中国新疆维吾尔自治区博尔塔拉蒙古自治州精河县系统采集完成，该区域为干旱荒漠生态系统的典型代表区域。数据集包含四个组成部分：（1）各类水源的氢氧稳定同位素（stable hydrogen and oxygen isotope，δ²H与δ¹⁸O）组成，涵盖降水、垂直剖面土壤水与地下水；（2）荒漠植被木质部水的同位素特征；（3）多试验样地监测得到的土壤体积含水量（%）；（4）梭梭（Haloxylon ammodendron）的形态性状，具体包括株高与基径。本综合数据集旨在为极端干旱环境下的植物水分获取策略、土壤-植物-大气连续体（soil-plant-atmosphere continuum, SPAC）相互作用及生态水文过程的高水平研究提供支撑。