VOON, S.Y., NGAU, L.D., KHO, L.K., RUMPANG, E., VASANDER, H., JAUHIAINEN, J., YRJÄLÄ, K., SILVENNOINEN, H. and SIM, S.F. 2026. Spatial Variability of Humification Degree in Tropical Peat of Oil Palm Plantations and Forests. Borneo Journal of Resource Science and Technology. 16, 1 (Jun. 2026).