Soil Chemical Properties in Zeya Nature Reserves of Russian Far East

This dataset contains analytical data describing the chemical and optical properties of soil organic matter (SOM) and water-soluble soil organic matter (WSOM) collected from boreal forest soils in the Zeya State Nature Reserve, Russian Far East. Soil samples were obtained from multiple vegetation zones along an elevation gradient, including montane forest, subalpine, and alpine tundra environments, as well as sites with and without wildfire disturbance history.
The dataset includes measurements of soil physicochemical properties, elemental composition, molecular composition, and optical characteristics. Specifically, the data include elemental carbon and nitrogen contents, soil moisture content, bulk density, ignition loss, and pH, as well as molecular composition data obtained using tetramethylammonium hydroxide pyrolysis–gas chromatography–mass spectrometry (TMAH-Py-GC/MS). In addition, water-soluble organic matter data include dissolved organic carbon concentrations, ultraviolet–visible absorbance spectra, and excitation–emission matrix fluorescence spectra.
The dataset contains both raw and processed analytical outputs used to characterize SOM and WSOM across different vegetation types and environmental conditions. These data provide reference information on soil organic matter composition in boreal forest ecosystems and may be reused for comparative studies, environmental assessments, and investigations of soil carbon dynamics and wildfire-affected environments.