Assessing precision in conventional field measurements of individual tree attributes

Research output: Contribution to journalArticleScientificpeer-review

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Assessing precision in conventional field measurements of individual tree attributes. / Luoma, Ville; Saarinen, Ninni; Wulder, Michael A.; White, Joanne C.; Vastaranta, Mikko; Holopainen, Markus; Hyyppä, Juha.

In: Forests, Vol. 8, No. 2, 38, 2017.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Luoma, V, Saarinen, N, Wulder, MA, White, JC, Vastaranta, M, Holopainen, M & Hyyppä, J 2017, 'Assessing precision in conventional field measurements of individual tree attributes' Forests, vol. 8, no. 2, 38. https://doi.org/10.3390/f8020038

APA

Luoma, V., Saarinen, N., Wulder, M. A., White, J. C., Vastaranta, M., Holopainen, M., & Hyyppä, J. (2017). Assessing precision in conventional field measurements of individual tree attributes. Forests, 8(2), [38]. https://doi.org/10.3390/f8020038

Vancouver

Luoma V, Saarinen N, Wulder MA, White JC, Vastaranta M, Holopainen M et al. Assessing precision in conventional field measurements of individual tree attributes. Forests. 2017;8(2). 38. https://doi.org/10.3390/f8020038

Author

Luoma, Ville ; Saarinen, Ninni ; Wulder, Michael A. ; White, Joanne C. ; Vastaranta, Mikko ; Holopainen, Markus ; Hyyppä, Juha. / Assessing precision in conventional field measurements of individual tree attributes. In: Forests. 2017 ; Vol. 8, No. 2.

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@article{5ffb700c59a649298a1903e5998b729a,
title = "Assessing precision in conventional field measurements of individual tree attributes",
abstract = "Forest resource information has a hierarchical structure: individual tree attributes are summed at the plot level and then in turn, plot-level estimates are used to derive stand or large-area estimates of forest resources. Due to this hierarchy, it is imperative that individual tree attributes are measured with accuracy and precision. With the widespread use of different measurement tools, it is also important to understand the expected degree of precision associated with these measurements. The most prevalent tree attributes measured in the field are tree species, stem diameter-at-breast-height (dbh), and tree height. For dbh and height, the most commonly used measuring devices are calipers and clinometers, respectively. The aim of our study was to characterize the precision of individual tree dbh and height measurements in boreal forest conditions when using calipers and clinometers. The data consisted of 319 sample trees at a study area in Evo, southern Finland. The sample trees were measured independently by four trained mensurationists. The standard deviation in tree dbh and height measurements was 0.3 cm (1.5{\%}) and 0.5 m (2.9{\%}), respectively. Precision was also assessed by tree species and tree size classes; however, there were no statistically significant differences between the mensurationists for dbh or height measurements. Our study offers insights into the expected precision of tree dbh and height as measured with the most commonly used devices. These results are important when using sample plot data in forest inventory applications, especially now, at a time when new tree attribute measurement techniques based on remote sensing are being developed and compared to the conventional caliper and clinometer measurements.",
keywords = "Accuracy, Calipers, Clinometers, Dbh, Diameter-at-breast-height, Forest inventory, Forest mensuration, Hypsometers, Precision, Tree height",
author = "Ville Luoma and Ninni Saarinen and Wulder, {Michael A.} and White, {Joanne C.} and Mikko Vastaranta and Markus Holopainen and Juha Hyypp{\"a}",
year = "2017",
doi = "10.3390/f8020038",
language = "English",
volume = "8",
journal = "Forests",
issn = "1999-4907",
publisher = "MDPI AG",
number = "2",

}

RIS - Download

TY - JOUR

T1 - Assessing precision in conventional field measurements of individual tree attributes

AU - Luoma, Ville

AU - Saarinen, Ninni

AU - Wulder, Michael A.

AU - White, Joanne C.

AU - Vastaranta, Mikko

AU - Holopainen, Markus

AU - Hyyppä, Juha

PY - 2017

Y1 - 2017

N2 - Forest resource information has a hierarchical structure: individual tree attributes are summed at the plot level and then in turn, plot-level estimates are used to derive stand or large-area estimates of forest resources. Due to this hierarchy, it is imperative that individual tree attributes are measured with accuracy and precision. With the widespread use of different measurement tools, it is also important to understand the expected degree of precision associated with these measurements. The most prevalent tree attributes measured in the field are tree species, stem diameter-at-breast-height (dbh), and tree height. For dbh and height, the most commonly used measuring devices are calipers and clinometers, respectively. The aim of our study was to characterize the precision of individual tree dbh and height measurements in boreal forest conditions when using calipers and clinometers. The data consisted of 319 sample trees at a study area in Evo, southern Finland. The sample trees were measured independently by four trained mensurationists. The standard deviation in tree dbh and height measurements was 0.3 cm (1.5%) and 0.5 m (2.9%), respectively. Precision was also assessed by tree species and tree size classes; however, there were no statistically significant differences between the mensurationists for dbh or height measurements. Our study offers insights into the expected precision of tree dbh and height as measured with the most commonly used devices. These results are important when using sample plot data in forest inventory applications, especially now, at a time when new tree attribute measurement techniques based on remote sensing are being developed and compared to the conventional caliper and clinometer measurements.

AB - Forest resource information has a hierarchical structure: individual tree attributes are summed at the plot level and then in turn, plot-level estimates are used to derive stand or large-area estimates of forest resources. Due to this hierarchy, it is imperative that individual tree attributes are measured with accuracy and precision. With the widespread use of different measurement tools, it is also important to understand the expected degree of precision associated with these measurements. The most prevalent tree attributes measured in the field are tree species, stem diameter-at-breast-height (dbh), and tree height. For dbh and height, the most commonly used measuring devices are calipers and clinometers, respectively. The aim of our study was to characterize the precision of individual tree dbh and height measurements in boreal forest conditions when using calipers and clinometers. The data consisted of 319 sample trees at a study area in Evo, southern Finland. The sample trees were measured independently by four trained mensurationists. The standard deviation in tree dbh and height measurements was 0.3 cm (1.5%) and 0.5 m (2.9%), respectively. Precision was also assessed by tree species and tree size classes; however, there were no statistically significant differences between the mensurationists for dbh or height measurements. Our study offers insights into the expected precision of tree dbh and height as measured with the most commonly used devices. These results are important when using sample plot data in forest inventory applications, especially now, at a time when new tree attribute measurement techniques based on remote sensing are being developed and compared to the conventional caliper and clinometer measurements.

KW - Accuracy

KW - Calipers

KW - Clinometers

KW - Dbh

KW - Diameter-at-breast-height

KW - Forest inventory

KW - Forest mensuration

KW - Hypsometers

KW - Precision

KW - Tree height

UR - http://www.scopus.com/inward/record.url?scp=85013828881&partnerID=8YFLogxK

U2 - 10.3390/f8020038

DO - 10.3390/f8020038

M3 - Article

VL - 8

JO - Forests

JF - Forests

SN - 1999-4907

IS - 2

M1 - 38

ER -

ID: 16988317