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福建省马尾松人工林二元立木材积方程检验与修订 被引量:13

Verification and revision of two-entry tree volume equation of Pinus massoniana plantation in Fujian Province
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摘要 福建省马尾松人工林二元立木材积表作为行业标准已经颁布使用了30多年,迫切需要检验和修订。根据2 514株马尾松立木材积数据,采用回归方程和交叉建模检验方法,对福建省现行的二元立木材积方程作适用性检验和修订。结果表明:福建省现行的马尾松人工林二元立木材积方程的估计值标准差为0.114,总相对误差和平均相对误差绝对值均大于10%,平均系统误差大于7%,已经不再适用,需要重新编方程;新建立的二元立木材积方程中的参数很稳定,变动系数均小于2%,估计值标准差为0.06、总相对误差和平均系统误差小于2%、平均相对误差绝对值小于10%;从误差指标来看,方程是适用的。 Two-entry volume table of Pinus massoniana plantation in Fujian Province , which had been used as industry standard for more than 30 years, was urgently needed to be verified and revised .Based on data about the diameter , height and volume of 2 514 trees collected from different cities in Fujian Province , the applicability of two-entry volume equation was verified and revised by the method of regression equation and cross modeling-test.The results showed that the current two-entry volume equation of P.massoniana plantation in Fujian Province was not suitable for using in practice and needed to be re -edited for the goodness evaluation of the equation was not high with 0.114 of standard error of estimate ( SSE) , more than 10%of both total relative error ( TRE) and mean absolute of percentage error ( MAPE), and with more than 7% of mean system error ( MSE).By contrast, the new two-entry volume equation was applicable judged by goodness evaluation for the coefficient of variation of parameters was less than 2%, SEE was 0.06, both TRE and MSE were less than 2%, and MAPE was less than 10%.
出处 《森林与环境学报》 CSCD 北大核心 2015年第1期81-86,共6页 Journal of Forest and Environment
基金 国家林业局林业数表项目
关键词 马尾松 人工林 二元立木材积方程 回归方程 交叉建模 Pinus massoniana plantation two-entry volume equation regression equation cross modeling
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