摘要
二元立木材积式在实际应用中有较高的准确度,但实际应用非常废时而且又不容易做到,通常用方便调查的一元(胸径)材积式来调查立木材积,但精度不高,误差又大。本研究运用黔东南杉木8 309株拟合数据,分别树高级(1 m级距)对杉木5 m、6 m2、0 m 16个树高级,建立树高级一元材积式,并用杉木独立样本数据1 547株分树高级对树高级一元材积式进行检验,达到97%以上的预测精度,从而奠定了树高级一元材积式在实际应用中的可行性。
The dual entry volume equation is of a high accuracy in actual application,but it not only wastes time but also is hard to be used in actual application.The single entry volume equation is widely used in limber volume,but its precision is poor.The single entry volume equation with tree height grade was established by using 16 tree height grades based on the matching data of 8309 fir trees in southeastern Guizhou.The forecast precision of 1547 fir trees examined by the single entry volume equation with tree height grade was up to 97%,which indicates that the single entry volume equation with tree height grade can be used in actual application.
出处
《贵州农业科学》
CAS
北大核心
2009年第9期181-184,共4页
Guizhou Agricultural Sciences
关键词
杉木
树高级
材积式
黔东南
贵州
fir
tree height grade
volume equation
Qiandongnan
Guizhou
作者简介
陈启元(1957-),男,高级工程师,全国注册咨询工程师(投资),从事林业调查研究及咨询业务工作
