Data set of acid buffer capacity and key physical and chemical properties of red soil in 2024 in Guixi, Jinxi and Yugan of Jiangxi Province

The entire dataset contains 36 soil profile layering records, including 13 P10 phyllite profiles, 11 P08 red sandstone profiles, and 13 P04 granite profiles. The data collection time is July 2024, and the laboratory physical and chemical indicators, mineral testing, acid-base titration, and statistical modeling work will be completed from July 2024 to May 2026. There is no time series continuous monitoring data, only a single field profile sampling static dataset. The dataset includes basic information of field profiles, raw data of soil acid-base titration, soil acidity indicators, exchangeable bases and exchangeable acids, soil mechanical composition, organic matter, semi quantitative XRD data of clay and primary minerals, and amorphous/crystalline iron aluminum oxide content.

Unified measurement units for all physical and chemical indicators: Acid buffer capacity (pHBC) is measured in cmol · kg ⁻¹ · pH ⁻¹, exchangeable acids and exchangeable base ions are measured in cmol · kg ⁻¹, minerals are expressed in mass percentage (%), clay/powder/sand particles, organic matter, and iron aluminum oxides are measured in g/kg, and pH is a dimensionless value.