Tree height is one of the most important forest characteristics and is one of the crucial measurements taken for either practical or scientific reasons. However, the accuracy of a tree-height measurement may vary in relation to many factors. The work described here thus sought to evaluate the accuracy of ground-based tree-height measurements for major forest-forming tree species of the temperate and boreal zones. The focus was on the importance of factors affecting accuracy of the measurements in question at larger geographical scales. In line with the above research goals, data were gathered from 299 stands throughout Poland and heights of 2388 sample trees of eight species, growing in different stands and site conditions, were measured; heights were then compared with measured lengths of felled trees as a reference. In total, 10 variables to determine factors that may influence ground-based tree-height measurement accuracy were used. We merged them into 4 groups: measurements, topography, stand and biometric-related factors. Results showed that biometric and topographic factors had the greatest relative influence on the accuracy of measurements of tree height. Tree length and species, followed by the slope of the terrain, tree age, and height above sea level were the most important factors found to affect accuracy. In most of the cases studied the terrestrial tree-height measurements were underestimated when set against definitive measurements of length. This was true for all species studied except oak, for which height measurements were typically overestimated. Notwithstanding the broad geographical scope of the work, the particular device used and the team factor were only found to have a marginal influence on measurement accuracy.

树高是最重要的森林特征之一，也是出于实际或科学原因而进行的关键测量之一。但是，树高测量的准确性可能会因许多因素而有所不同。因此，此处描述的工作旨在评估温带和寒带地区主要森林形成树种的地面树高测量的准确性。重点是在较大的地理范围内影响所讨论测量准确性的因素的重要性。为了实现上述研究目标，从波兰的299个林分中收集了数据，并测量了在不同林分和现场条件下生长的8种2388种样本树的高度；然后将高度与砍伐树木的测得长度进行比较，以作为参考。总共，使用10个变量来确定可能影响基于地面的树高测量精度的因素。我们将它们分为4组：测量，地形，林分和生物特征相​​关因素。结果表明，生物特征和地形因素对树高的测量精度具有最大的相对影响。树木的长度和种类，其次是地形的坡度，树木的年龄和海拔高度，是影响准确性的最重要因素。在大多数研究案例中，与确定的长度测量值相比，地面树木的高度测量值被低估了。对于所有研究的树种来说都是如此，除了橡树外，橡树的高度测量通常被高估了。尽管作品的地理范围很广，