武夷山国家级自然保护区黄山松天然林自然稀疏规律研究

The Self-thinning Law of Pinus taiwanensis Natural Forest in Wuyishan National Nature Reserve

摘要:

选择平均直径、平均木断面积和林分总断面积作为林木个体大小的指标, 研究林木株数与林木大小的关系。应用-3/2法则, 建立黄山松天然林自然稀疏过程中林分密度与平均直径、平均木断面积、总断面积的相关关系。结果表明：黄山松天然林种群密度对林分平均胸径、平均木断面积、林分总断面积均存在显著作用。因此, 在经营黄山松天然林时, 必须切实重视林分密度控制管理。

关键词:黄山松;天然林;自然稀疏;总断面积

Abstract:

The mean diameter, mean basal area of individual and total basal area of stands were collected as the indices for studying the relationship between the number of trees and the size. Based on the famous -3/2 power rule, the equations were established on the relationship between density of stand and the mean diameter, mean basal area of individual and total basal area of stands in the process of the self-thinning of Pinus taiwanensis natural forest. The results showed that the population density of P. taiwanensis natural forest had significant effect on the mean diameter, mean basal area of individual and total basal area of stand. Therefore attention should be paid to control stand density in the management of P. taiwanensis natural forest.

Key words:Pinus taiwanensis; Natural forest; Self-thinning; Total basal area