This document provides an overview of land use principles, approaches, and techniques. It discusses 5 principles of land use: finiteness of land, fixation of land relief, ecological balance, interdependence of land use, and perceived value of land. It then describes 3 descriptive approaches to land use study: plot-to-plot surveys, ecological approach, and quantitative techniques. Next, it outlines 8 cause-and-effect approaches including genetic, prescriptive, case study, and statistical. Finally, it discusses general steps for land use surveys including reconnaissance, field investigation, village surveys, and sampling techniques.