西藏一江两河区、藏东南、川西藏东横断山区农田土壤肥力数据库（2020）

该数据库包含农田土壤剖面样品数据，系青藏高原二次科考农田生态系统与粮食安全科考队2020年通过野外实地考察采集。土壤层根据不同采样点的土壤深度确定，在0-100cm范围，分为0-10cm、10-20cm、20-40cm、40-60cm、60-80cm、80-100cm等不同深度，测试指标包括有机碳土壤全氮、全钾、全磷、有效磷、速效钾、碱解氮等土壤养分指标，同时也包含了土壤质地；该数据用于了解青藏高原不同土壤深度的养分变化规律。

This database contains farmland soil profile sample data, which was collected in 2020 by the Farmland Ecosystem and Food Safety Expedition Team of the Second Tibetan Plateau Scientific Expedition and Research (STEP) Program through field investigations. Soil layers were delineated based on the actual soil depth of each sampling site within the 0-100 cm depth range, and divided into six depth increments: 0-10 cm, 10-20 cm, 20-40 cm, 40-60 cm, 60-80 cm, and 80-100 cm. The tested indicators include soil nutrient parameters such as soil organic carbon, total nitrogen, total potassium, total phosphorus, available phosphorus, available potassium, and alkaline hydrolyzable nitrogen, as well as soil texture. This dataset is used to understand the variation patterns of soil nutrients at different soil depths on the Tibetan Plateau.