立木材积测算精度的研究  

Study on measurement precision of standing tree volume

作　　者：张恩生 李军 李硕[2] 陈东来[2] 

机构地区：[1]河北省孟滦林管局,河北围场068450 [2]河北农业大学,河北保定071000

出　　处：《河北林果研究》2006年第3期243-246,共4页Hebei Journal of Forestry and Orchard Research

摘　　要：为正确选择立木材积测算方法,提高立木材积测算精度,该文利用42株桦树、40株山杨样木的调查资料,对等直径差区分法、望高法、形率法等立木材积测算方法的精度进行了分析。结果表明,等直径差区分法:桦树的精度平均值是96.56%,山杨的精度平均值是96.97%;望高法:桦树的精度平均值是97.04%,山杨的精度平均值是95.82%;形率法:桦树的精度平均值是95.77%,山杨的精度平均值是96.80%。The conditions of mensuration about standing tree and cutting tree are obviously different. The methods of volume measurement are also different. Based on the characteristics of mensuration of standing tree , Pressler M. R., Grosenbaugh L. R. and Schiffel A. advanced Height accumulation method, Pressler method, Factor quotient method. Using the research data of 42 birches,40 Populus davidiana sample trees, the precision of all the methods have been analyzed. The result show that, for height accumulation method, average precision of birches is 96.56% and Populus davidia is 96.97 %. For Prcssler method, average precision values of birch is 97.04 % and Populus davidiana is 95.82 %. And for factor quotient method, average precision value of birch is 95.77% and 96.8% for Populus davidiana.

关 键 词：立木材积 等直径差区分法 望高法 形率法 测算精度 

分 类 号：S758.1[农业科学—森林经理学]