山西省中条山林区油松生长规律研究

Study on the Growth Pattern of Pinus Tabuliformis in Zhongtiao Mountain Forest Area of Shanxi Province

以山西省中条山林区的优势树种油松(Pinus tabuliformis)为研究对象,选择27株优势木作解析木,以5个典型生长方程拟合胸径、树高和材积的最优生长模型,并分析其生长规律。结果表明,油松胸径和树高的最优生长模型为Richards方程,材积的最优生长模型为Gompertz方程。利用Richards方程拟合油松的单木生长曲线,发现油松胸径、树高和材积的生长高峰期分别在10 a~40 a、10 a~30 a和20 a~70 a,其数量成熟龄为70 a。

Taking the dominant tree species Pinus tabulaeformis in the Zhongtiao Mountain Forest area of Shanxi Province as the research object,27 dominant trees were selected as analytical trees.5 typical growth equations were used to fit the optimal growth model for breast height diameter,tree height and volume and their growth patterns were analyzed.The results showed that the optimal growth model for breast height diameter and tree height of Pinus tabulaeformis was the Richards equation,and the optimal growth model for volume was the Compertz equation.Using the Richards equation to fit the single tree growth curve of Pinus tabulaeformis,it was found that the peak growth periods of diameter at breast height,tree height and volume were 10 a~40 a,10 a~30 a and 20 a~70 a respectively,with a maturity age of 70 years.