Altitudinal gradient and anthropogenic disturbance alter soil quality index and biomass carbon in Banj Oak (Quercus leucotrichophora) forests of Garhwal Himalaya, India - Sachin Shah; Vinod Prasad Khanduri; Deepa Rawat; Bhupendra Singh; Manoj Kumar Riyal; Sarswati Prakash Sati (Journal of Environmental Management, 2026)