scholarly journals Estimating tree size distributions and timber assortment recoveries for wood procurement planning using airborne laser scanning

2011 ◽  
Vol 2011 (126) ◽  
Author(s):  
Jussi Peuhkurinen
Keyword(s):  
Laser Scanning ◽  
Airborne Laser Scanning ◽  
Tree Size ◽  
Size Distributions ◽  
Airborne Laser ◽  
Wood Procurement ◽  
Procurement Planning

Comparing individual tree detection and the area-based statistical approach for the retrieval of forest stand characteristics using airborne laser scanning in Scots pine stands

2011 ◽  
Vol 41 (3) ◽  
pp. 583-598 ◽  
Author(s):  
Jussi Peuhkurinen ◽  
Lauri Mehtätalo ◽  
Matti Maltamo
Keyword(s):  
Laser Scanning ◽  
Statistical Approach ◽  
Basal Area ◽  
Airborne Laser Scanning ◽  
Tree Size ◽  
Size Distributions ◽  
Individual Tree ◽  
Tree Detection ◽  
Airborne Laser ◽  
Number Of Stems

Airborne laser scanning based forest inventories employ two major methods: individual tree detection (ITD) and the area-based statistical approach (ABSA). ITD is based on the assumption that trees are of a certain form and can be delineated using airborne laser scanning techniques, whereas ABSA is an empirical method based on the relations between area-level forest attributes and laser echo height distributions. These two methods are compared here within the same test area in terms of their usefulness for estimating mean forest stand characteristics and tree size distributions. All evaluations were performed using leave-one-out cross validation. The average errors in volume and basal area did not differ significantly between the methods. ABSA resulted in overall better accuracies when estimating the diameter and height of the basal area median tree and the number of stems, whereas ITD produced significantly biased estimates for the number of stems and the mean tree size. Tree size distributions were estimated with slightly better accuracy using ABSA. More comprehensive investigations revealed that both methods were not able to estimate forest structure (tree size distribution and spatial distribution of tree locations), which in turn, affected the estimation accuracies.

Airborne laser scanning-based decision support for wood procurement planning

2013 ◽  
Vol 29 (sup1) ◽  
pp. 132-143 ◽  
Author(s):  
Jari Vauhkonen ◽  
Petteri Packalen ◽  
Jukka Malinen ◽  
Juho Pitkänen ◽  
Matti Maltamo
Keyword(s):  
Decision Support ◽  
Laser Scanning ◽  
Airborne Laser Scanning ◽  
Airborne Laser ◽  
Wood Procurement ◽  
Procurement Planning

scholarly journals Enhancing the Estimation of Stem-Size Distributions for Unimodal and Bimodal Stands in a Boreal Mixedwood Forest with Airborne Laser Scanning Data

Forests ◽  
2018 ◽  
Vol 9 (2) ◽  
pp. 95 ◽  
Author(s):  
Christopher Mulverhill ◽  
Nicholas Coops ◽  
Joanne White ◽  
Piotr Tompalski ◽  
Peter Marshall ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Airborne Laser Scanning ◽  
Size Distributions ◽  
Stem Size ◽  
Airborne Laser ◽  
Boreal Mixedwood Forest

scholarly journals A Comparison of Airborne Laser Scanning and Image Point Cloud Derived Tree Size Class Distribution Models in Boreal Ontario

Forests ◽  
2015 ◽  
Vol 6 (12) ◽  
pp. 4034-4054 ◽  
Author(s):  
Margaret Penner ◽  
Murray Woods ◽  
Douglas Pitt
Keyword(s):  
Point Cloud ◽  
Laser Scanning ◽  
Size Class ◽  
Airborne Laser Scanning ◽  
Tree Size ◽  
Image Point ◽  
Distribution Models ◽  
Size Class Distribution ◽  
Class Distribution ◽  
Airborne Laser

Patterns of covariance between airborne laser scanning metrics and Lorenz curve descriptors of tree size inequality

2013 ◽  
Vol 39 (sup1) ◽  
pp. S18-S31 ◽  
Author(s):  
Rubén Valbuena ◽  
Matti Maltamo ◽  
Susana Martín-Fernández ◽  
Petteri Packalen ◽  
Cristina Pascual ◽  
...  
Keyword(s):  
Lorenz Curve ◽  
Laser Scanning ◽  
Airborne Laser Scanning ◽  
Tree Size ◽  
Airborne Laser ◽  
Size Inequality

Species-specific combination and calibration between area-based and tree-based diameter distributions using airborne laser scanning

2016 ◽  
Vol 46 (6) ◽  
pp. 753-765 ◽  
Author(s):  
Zhengyang Hou ◽  
Qing Xu ◽  
Jari Vauhkonen ◽  
Matti Maltamo ◽  
Timo Tokola
Keyword(s):  
Laser Scanning ◽  
Economic Value ◽  
Airborne Laser Scanning ◽  
Stem Volume ◽  
Individual Tree ◽  
Tree Detection ◽  
Breast Height ◽  
Airborne Laser ◽  
Wood Procurement ◽  
Species Specific

The planning of wood procurement requires reliable information about the species-specific timber assortments on which the economic value of a production forest depends. The timber assortments refer to the stem volumes of the sawlog and pulpwood fractions, specified in terms of both timber quality and allowable log dimensions, e.g., the stem diameter at breast height (dbh). We propose here an airborne laser scanning based calibration framework for generating species-specific dbh distributions that combines the area-based approach (ABA) and individual-tree detection (ITD), two established and independent approaches for retrieving forest attributes from airborne laser scanning data. Both ABA- and ITD-derived dbh distributions were generated nonparametrically for pine, spruce, coniferous, deciduous, and all species and assessed with respect to the plot-level species-specific total stem volume (m3·ha–1) and approximations of volume of timber assortments. Although after calibration, the total volume of all species and the volume approximations of coniferous sawlog and spruce pulpwood decreased in accuracy by 4%–7%, the calibration improved the accuracy of the other 12 species-specific estimates by 2%–17%, testifying to the general effectiveness of the proposed calibration framework.

Estimating individual tree mid- and understory rank-size distributions from airborne laser scanning in semi-arid forests

2014 ◽  
Vol 330 ◽  
pp. 271-282 ◽  
Author(s):  
Tyson L. Swetnam ◽  
Donald A. Falk ◽  
Ann M. Lynch ◽  
Stephen R. Yool
Keyword(s):  
Laser Scanning ◽  
Airborne Laser Scanning ◽  
Size Distributions ◽  
Individual Tree ◽  
Airborne Laser ◽  
Semi Arid
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