【Objective】The self-thinning law of Pinus massoniana plantation was studied to provide a theoretical basis for the construction of stand maximum density line model,the development of stand growth process table and other management tables,and realizing the scientific management of Pinus massoniana plantation.【Method】Taking Pinus massoniana plantation as the research object,the experimental data of forests with different planting densities was statistically analyzed,and the correlation models between the average cross-sectional area and the a...