马尾松地径与胸径相关关系研究  

The correlation of ground diameter and DBH of Pinus massoniana Lamb

作　　者：杨晓毅[1] 赵浩彦[1] 

机构地区：[1]南京森林警察学院,江苏南京210023

出　　处：《湖南林业科技》2014年第5期40-42,46,共4页Hunan Forestry Science & Technology

基　　金：江苏省高等学校大学实践创新训练计划项目(201312213009Y)

摘　　要：于南京市紫金山灵谷寺风景区的马尾松纯林中随机抽取349株马尾松样木,对其胸径(D1.3)和地径(D0)进行实测,采用多模型选优法建立了胸径和地径的相关数学模型。结果显示,选取的线性、乘幂、指数和抛物线4个方程的相关指数均大0.92,系统误差均小于3%,平均相对误差均小于13%,其中乘幂曲线方程拟合效果最佳。Based on the determination of DBH （D1.3 ）and ground diameter （D0 ）of 349 random selected plant of Pinus massoniana Lamb in Linggu Temple of Zijin Mountain in Nanjing City,the related mathematical models of DBH and ground diameter were established with the method of the multiple models selection.The results suggest that determine co-efficients of more than 0.92,systematic errors of less than 3% and average relative errors of lower than 13% were ob-tained in a linear equation,power equation,exponential equation and Quadratic equation.Moreover,power equation is the optimal model.

关 键 词：马尾松 地径 胸径 模型 

分 类 号：S791.248[农业科学—林木遗传育种]