Study on relationship between diameter at breast height and crown width of Keteleeria cyclolepis froest from Guangxi

The regression equations in Nanning and Yulin were C=0.264D0.877 and C=0.414D0.794 by regression analysis based on plots data of Keteleeria cyclolepis, which could be used to describe its CW and DBH correlation between the first number-average above 0.9, then on this basis, the suitable management density table was drawn up to provide reference data for its plantation genetic breeding and quantitative thinning.