Matiullah, Amjad ur Rahman, Zahid Ullah, Aamir Saleem, Rahmatullah Qureshi, David F.R.P. Burslem and Mashwani, Z.- ur-R. 2022. Distribution Pattern of Tree Species and Richness along an Altitude Gradient in the Sub-Alpine Temperate Zone of Hindu Kush Mountainous Forests, Pakistan: Tree species richness along elevation gradient. Proceedings of the Pakistan Academy of Sciences: B. Life and Environmental Sciences. 59, 4 (Dec. 2022), 81–92. DOI:https://doi.org/10.53560/PPASB(59-4)741.