Passive measurement method of tree diameter at breast height using a smartphone

Biomass accumulation in 12 jack pine and 11 mixed hardwood stands of fire origin ranging in age from 7 to 57 years is presented. Logarithmic equations relating aboveground tree, crown, and stem biomass to tree diameter at breast height are given for eight tree species.

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Comparison of estimation algorithms for individual tree diameter at breast height based on hand-held mobile laser scanning

Scandinavian Journal of Forest Research ◽

10.1080/02827581.2021.1973554 ◽

2021 ◽

pp. 1-14

Author(s):

Weiwei Fan ◽

Haoran Liu ◽

Yongsheng Xu ◽

Wenshu Lin

Keyword(s):

Laser Scanning ◽

Individual Tree ◽

Tree Diameter ◽

Diameter At Breast Height ◽

Estimation Algorithms ◽

Breast Height

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An early exploration of the use of the Microsoft Azure Kinect for estimation of urban tree Diameter at Breast Height

Remote Sensing Letters ◽

10.1080/2150704x.2020.1802528 ◽

2020 ◽

Vol 11 (11) ◽

pp. 963-972

Author(s):

James McGlade ◽

Luke Wallace ◽

Bryan Hally ◽

Andrew White ◽

Karin Reinke ◽

...

Keyword(s):

Urban Tree ◽

Tree Diameter ◽

Diameter At Breast Height ◽

Breast Height ◽

Early Exploration ◽

Microsoft Azure

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Effects of two silvicultural regimes with large tree retention on epiphytic macrolichen communities in Adirondack northern hardwoods, New York, USA

Canadian Journal of Forest Research ◽

10.1139/x07-053 ◽

2007 ◽

Vol 37 (10) ◽

pp. 1854-1866 ◽

Cited By ~ 10

Author(s):

Heather T. Root ◽

Gregory G. McGee ◽

Ralph D. Nyland

Keyword(s):

New York ◽

Community Composition ◽

Old Growth ◽

Epiphytic Lichen ◽

Tree Diameter ◽

Diameter At Breast Height ◽

Breast Height ◽

Lichen Community ◽

Selection Systems ◽

Large Trees

We sampled epiphytic lichen communities in nine Adirondack northern hardwood stands: three old growth, three reserve shelterwood, and three single-tree selection systems. Our objectives were to assess the effects of treatment, tree diameter at breast height, and their interaction on lichen communities and to determine whether lichen traits were associated with particular habitats. Lichen community composition was strongly related to tree diameter at breast height and differed between old growth and reserve shelterwoods. Lichen community composition was also related to an interaction between tree size and stand type. Lobaria pulmonaria (L.) Hoffm. was associated with large trees in old growth, whereas Evernia mesomorpha Nyl., Parmelia sulcata Taylor, and Physcia millegrana Degel. characterized those in shelterwood stands. Nitrophilous lichens were most common on small trees and in reserve shelterwoods, whereas small trees in selection systems and old growth supported lichens that were found to be most associated with larger trees overall. Selection systems apparently maintained lichen communities indistinguishable from those in old growth or reserve shelterwood. Because large trees hosted unique epiphyte assemblages particularly rich in fruticose and cyanolichen species, we expect that management retaining few or no large trees will alter epiphytic lichen communities.

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Mechanistically based, allometric models to predict tree diameter and height in even-aged monoculture of Eucalyptusregnans F. Muell.

Canadian Journal of Forest Research ◽

10.1139/x89-038 ◽

1989 ◽

Vol 19 (2) ◽

pp. 270-273 ◽

Cited By ~ 4

Author(s):

P. W. West ◽

C. L. Beadle ◽

C. R. A. Turnbull

Keyword(s):

Tree Height ◽

Allometric Relationships ◽

Allometric Models ◽

Tree Diameter ◽

Diameter At Breast Height ◽

Breast Height ◽

Vertical Stability ◽

Structural Argument ◽

Individual Trees ◽

Geometrical Argument

A randomly selected sample of 22 trees was felled in a stand in a 20-year-old monoculture of Eucalyptusregnans F. Muell. in southern Tasmania. One-half of the trees were from a section of the stand that had been heavily thinned 10 years previously, and the remainder were from the unthinned section. The trees were sectioned and the fresh weights of their stems (including bark) and crowns (leaves plus branches) determined. By combining a geometrical argument about the shape of tree stems with a structural argument about their vertical stability, allometric relationships were established relating tree diameter at breast height or tree height to total aboveground weight and the ratio of crown to stem weight. These relationships were found to hold in both the thinned and unthinned sections of the experiment. When combined with a model to predict biomass of individual trees, these models can be used to predict diameter or height of individual trees in E. regnans monoculture.

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Estimation of Tree Diameter at Breast Height using Stereo Camera by Drone Surveying and Mobile Scanning Methods

2020 59th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE) ◽

10.23919/sice48898.2020.9240363 ◽

2020 ◽

Author(s):

Visarut Trairattanapa ◽

Ankit A. Ravankar ◽

Takanori Emaru

Keyword(s):

Stereo Camera ◽

Tree Diameter ◽

Diameter At Breast Height ◽

Breast Height

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An Implementation of Remote Monitoring Standing Tree Diameter at Breast Height

TELKOMNIKA Indonesian Journal of Electrical Engineering ◽

10.11591/telkomnika.v11i11.3489 ◽

2013 ◽

Vol 11 (11) ◽

Author(s):

Liyuan Jiang ◽

Wenbin Li ◽

Jiangming Kan ◽

Zhibin Hao ◽

Qing Xu

Keyword(s):

Remote Monitoring ◽

Standing Tree ◽

Tree Diameter ◽

Diameter At Breast Height ◽

Breast Height

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Modeling relative error in stem basal area estimates

Canadian Journal of Forest Research ◽

10.1139/x90-065 ◽

1990 ◽

Vol 20 (5) ◽

pp. 496-502 ◽

Cited By ~ 18

Author(s):

T. G. Gregoire ◽

S. M. Zedaker ◽

N. S. Nicholas

Keyword(s):

Basal Area ◽

Field Measurements ◽

Mean Square ◽

Interval Estimates ◽

Tree Diameter ◽

Diameter At Breast Height ◽

Breast Height ◽

The Mean ◽

The Difference ◽

Relative Errors

The computed estimate of basal area was the focus of this investigation into the accuracy of tree diameter measurements. Diameter at breast height was measured on 101 trees, the breast height disc was removed from the stem, and each disc outline was then digitized to determine its actual area. Actual areas were compared with the basal areas computed with the field measurements of diameter by expressing the deviations as a proportion of the actual areas. These relative errors averaged 3.1% when basal area was computed with a taped diameter at breast height, and they averaged −2.5% when the mean of two calipered, perpendicular diameter at breast height measurements were used. Noncircularity accounted for about 2.6% of the bias, on average, in basal areas from taped diameters. Root mean square error of relative basal area errors ranged from 7.3 to 7.9% among these methods. The difference between basal areas computed with a taped diameter at breast height and with calipered diameter at breast height was computed and expressed as a proportion of the actual basal area. On average, a difference of 5% was observed. Interval estimates for these differences are presented.

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A Semi-empirical Approach Based on Genetic Programming for the Study of Biophysical Controls on Diameter-Growth of Fagus orientalis in Northern Iran

Remote Sensing ◽

10.3390/rs11141680 ◽

2019 ◽

Vol 11 (14) ◽

pp. 1680 ◽

Cited By ~ 5

Author(s):

Bayat ◽

Noi ◽

Zare ◽

Bui

Keyword(s):

Solar Radiation ◽

Genetic Programming ◽

Wind Velocity ◽

Basal Area ◽

Northern Iran ◽

Tree Diameter ◽

Diameter At Breast Height ◽

Diameter Increment ◽

Oriental Beech ◽

Breast Height

This paper examines the possible ecological controls on the diameter increment of oriental beech (Fagus orientalis Lipsky) in a high altitude forest in northern Iran. The main objectives of the study are computer-generated abiotic surfaces and associated plot estimates of (i) growing-season-cumulated potential solar radiation, (ii) seasonal air temperature, (iii) topographic wetness index in representing soil water distribution, and (iv) wind velocity generated from the simulation of fluid-flow dynamics in complex terrain. Plot estimates of the tree growth are based on averaged plot measurements of diameter at breast height increment during a growing period of nine years (2003–2012). Biotic variables related to the tree diameter increment involve averaged 2003 tree diameter and basal area measured in individual forest plots. In the modelling data (144 plots), the assemblage of modelled and observed site variables explained 75% of the variance in plot-level diameter increment. In the validation data (32 plots), the degree of explained variance was 77%. Mean tree diameter at breast height showed the strongest correlation with diameter increment, explaining 32% of the variation between-plot, followed by the configuration of topography and re-distribution of surface water (19.5%) and plot basal area (16.9%). On average, localised estimates of solar radiation and wind velocity potentially contribute to about 20% of the control on plot-level mean increment in oriental beech of the area. The results of the genetic programming showed that controlling the stand basal area and tree size by thinning and/or selective harvesting can have a favourable impact on the future distribution of mean diameter in oriental beech.

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Assessment of the Influence of Survey Design and Processing Choices on the Accuracy of Tree Diameter at Breast Height (DBH) Measurements Using UAV-Based Photogrammetry

Drones ◽

10.3390/drones5020043 ◽

2021 ◽

Vol 5 (2) ◽

pp. 43

Author(s):

Bruno Miguez Moreira ◽

Gabriel Goyanes ◽

Pedro Pina ◽

Oleg Vassilev ◽

Sandra Heleno

Keyword(s):

Survey Design ◽

Point Clouds ◽

Biomass Estimation ◽

Structural Parameter ◽

Tree Diameter ◽

Forested Area ◽

Diameter At Breast Height ◽

Breast Height ◽

3D Point Clouds ◽

Mean Square Errors

This work provides a systematic evaluation of how survey design and computer processing choices (such as the software used or the workflow/parameters chosen) influence unmanned aerial vehicle (UAV)-based photogrammetry retrieval of tree diameter at breast height (DBH), an important 3D structural parameter in forest inventory and biomass estimation. The study areas were an agricultural field located in the province of Málaga, Spain, where a small group of olive trees was chosen for the UAV surveys, and an open woodland area in the outskirts of Sofia, the capital of Bulgaria, where a 10 ha area grove, composed mainly of birch trees, was overflown. A DJI Phantom 4 Pro quadcopter UAV was used for the image acquisition. We applied structure from motion (SfM) to generate 3D point clouds of individual trees, using Agisoft and Pix4D software packages. The estimation of DBH in the point clouds was made using a RANSAC-based circle fitting tool from the TreeLS R package. All trees modeled had their DBH tape-measured on the ground for accuracy assessment. In the first study site, we executed many diversely designed flights, to identify which parameters (flying altitude, camera tilt, and processing method) gave us the most accurate DBH estimations; then, the resulting best settings configuration was used to assess the replicability of the method in the forested area in Bulgaria. The best configuration tested (flight altitudes of about 25 m above tree canopies, camera tilt 60°, forward and side overlaps of 90%, Agisoft ultrahigh processing) resulted in root mean square errors (RMSEs; %) of below 5% of the tree diameters in the first site and below 12.5% in the forested area. We demonstrate that, when carefully designed methodologies are used, SfM can measure the DBH of single trees with very good accuracy, and to our knowledge, the results presented here are the best achieved so far using (above-canopy) UAV-based photogrammetry.

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