Nitraria tangutorum Nebkha Successional Stoichiometric Dataset

This dataset contains carbon (C), nitrogen (N), and phosphorus (P) concentrations and their stoichiometric ratios (C:N, C:P, N:P) in plant organs (roots, stems, leaves) and soils (0–20 cm depth) across four successional stages (initial, developing, stable, and declining) of Nitraria tangutorum nebkhas in the desert-oasis ecotone of northwestern China (Inner Mongolia and Ningxia). It also includes basic soil physicochemical properties (pH, electrical conductivity, alkali-hydrolyzable nitrogen, available phosphorus) and nebkha morphological parameters (long axis, short axis, height). Geographic coordinates, elevation, and long-term mean annual temperature (MAT) and precipitation (MAP) extracted from the WorldClim database are provided for each sampling site. The data can be used to investigate plant–soil nutrient feedback mechanisms, nebkha morphological evolution, and their responses to climate change in arid ecosystems.

本数据集涵盖中国西北荒漠-绿洲交错带（内蒙古及宁夏）内唐古特白刺（Nitraria tangutorum）灌丛沙堆4个演替阶段（初始、发育、稳定、衰退）中植物器官（根、茎、叶）与0–20厘米土层土壤的碳（C）、氮（N）、磷（P）浓度及其化学计量比（C:N、C:P、N:P）；同时收录了基础土壤理化性质（pH、电导率、碱解氮、有效磷）以及灌丛沙堆的形态参数（长轴、短轴、高度）。每个采样点均配有地理坐标、海拔数据，以及从WorldClim数据库（WorldClim）提取的长期年平均气温（MAT）和年平均降水量（MAP）。该数据可用于探究干旱生态系统中的植物-土壤养分反馈机制、灌丛沙堆形态演化及其对气候变化的响应。