Hidiya, M., Tjahjono, B. ., & Priatna, D. (2026). Analysis of water-regulating ecosystem services in the Upper Ciliwung Watershed from 2015 to 2025 based on vegetation index, morphometric characteristics, and soil properties. Indonesian Journal of Applied Environmental Studies, 7(2), 69–77. https://doi.org/10.33751/injastunpak.v7i1.73