杉木天然林林木地径与胸径的关系研究——以福建五一国有林场为例

Research on the Relationship of Ground and Breast Diamters of Fir( Cunninghamia lanceolata) in Natural Forests—A Case Study of Wuyi State Farm in Fujian

对福建省五一国有林场杉木天然林地径与胸径进行回归分析,建立了回归模型。结果表明:地径与胸径间存在着密切、显著的线性关系,回归模型的拟合优度和误差均很理想。研究结果为计算杉木材积提供了一个方便可行的方法。

Regression model for ground diameter and diameter at breast height( DBH) of Fir( Cunninghamia lanceolata) in natural forests in Wuyi State Farm was built and the results showed that there was a close straight regression between the ground diameter and DBH. Goodness of fit and error of the established regression model were very ideal. This provides a simple and feasible method to estimate volume of single tree.