摘要
本文利用414块人工落叶松林样地实测资料,探讨了角规测树的误差问题。研究结果表明,即使在排除了某些产生偏差因素的情况下,角规常数选择不当,仍然会产生偏小或偏大的误差。这说明角规常数的选择在角规测树中是至关重要的;并说明了角规常数的选择与其它误差相关联,是角规测树的中心问题。
Errors in forest measuration with angle gauge are analyzed in this paper based on the data from 414 plots of larch plantation. The r-esult reveals that when an inappropriate basal area factor is choosen,e-rrors will appear, even other error-orienting factors are excluded. So the determination of basal area factor is most important in forest measuration with angle gauge. Besides, the paper also points out that other errors will be produced in the determination of basal area factor, which is a key problem of the mensuration method.
关键词
角规
测树
常数
偏差
forest mensuration with angle
gauge basal area factor
error
