The Study of Under Different Competition Index the Density of Larix Principis Plantation.

Abstract: Stand density is the number of trees standing in the process of tree growth on the unit area, it stands to grow development, stability, forest production, quality and other factors have important links. Based on a survey of different densities of Larix principis plantation, the thesis adopts the Hegyi model which using a single wood competition index model to calculate the competition index, proposing crown width competition index. Then fit the crown width, diameter at chest height and relative crown width competition index and derive the equation. It suggests that when the competition index were 0.8, 0.6, 0.4, 0.2, management density of Larix principis plantation. It can provide some basis for management of Larix principis plantations [Copyright &y& Elsevier]