Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning
Data obtained from airborne laser scanning (ALS) are frequently used for acquiring forest data. Using a relatively low number of laser pulses per unit area (≤5 pulses per m2), this technique is typically used to estimate stand mean values. In this study stand diameter distributions were also estimat...
Published in: | Scandinavian Journal of Forest Research |
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Online Access: | https://pub.epsilon.slu.se/12038/ https://pub.epsilon.slu.se/12038/1/saad_r_et_al_150330.pdf https://doi.org/10.1080/02827581.2014.978888 |
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ftslunivuppsala:oai:pub.epsilon.slu.se:12038 2023-05-15T17:44:51+02:00 Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning Saad, Rami Wallerman, Jörgen Lämås, Tomas 2014 application/pdf https://pub.epsilon.slu.se/12038/ https://pub.epsilon.slu.se/12038/1/saad_r_et_al_150330.pdf https://doi.org/10.1080/02827581.2014.978888 en eng eng https://pub.epsilon.slu.se/12038/1/saad_r_et_al_150330.pdf Saad, Rami and Wallerman, Jörgen and Lämås, Tomas (2014). Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning. Scandinavian journal of forest research. 30 :2 , 186-196 [Research article] (Unpublished) Forest Science Research article PeerReviewed info:eu-repo/semantics/article 2014 ftslunivuppsala https://doi.org/10.1080/02827581.2014.978888 2022-01-09T19:13:23Z Data obtained from airborne laser scanning (ALS) are frequently used for acquiring forest data. Using a relatively low number of laser pulses per unit area (≤5 pulses per m2), this technique is typically used to estimate stand mean values. In this study stand diameter distributions were also estimated, with the aim of improving the information available for effective forest management and planning. Plot level forest data, such as stem number and mean height, together with diameter distributions in the form of Weibull distributions, were estimated using ALS data. Stand-wise tree lists were then estimated. These estimations were compared to data obtained from a field survey of 124 stands in northern Sweden. In each stand an average of seven sample plots (radius 5–10 m) were systematically sampled. The ALS approach was then compared to a mean value approach where only mean values are estimated and tree lists are simulated using a forest decision support system (DSS). The ALS approach provided a better match to observed diameter distributions: ca. 35% lower error indices used as a measure of accuracy and these results are in line with the previous studies. Moreover – which is unique compared to earlier studies – suboptimal losses were assessed. Using the Heureka DSS the suboptimal losses in terms of net present value due to erroneous decisions were compared. Although no large difference was found, the ALS approach showed smaller suboptimal loss than the mean value approach. Article in Journal/Newspaper Northern Sweden Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive Scandinavian Journal of Forest Research 30 2 186 196 |
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Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
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ftslunivuppsala |
language |
English |
topic |
Forest Science |
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Forest Science Saad, Rami Wallerman, Jörgen Lämås, Tomas Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning |
topic_facet |
Forest Science |
description |
Data obtained from airborne laser scanning (ALS) are frequently used for acquiring forest data. Using a relatively low number of laser pulses per unit area (≤5 pulses per m2), this technique is typically used to estimate stand mean values. In this study stand diameter distributions were also estimated, with the aim of improving the information available for effective forest management and planning. Plot level forest data, such as stem number and mean height, together with diameter distributions in the form of Weibull distributions, were estimated using ALS data. Stand-wise tree lists were then estimated. These estimations were compared to data obtained from a field survey of 124 stands in northern Sweden. In each stand an average of seven sample plots (radius 5–10 m) were systematically sampled. The ALS approach was then compared to a mean value approach where only mean values are estimated and tree lists are simulated using a forest decision support system (DSS). The ALS approach provided a better match to observed diameter distributions: ca. 35% lower error indices used as a measure of accuracy and these results are in line with the previous studies. Moreover – which is unique compared to earlier studies – suboptimal losses were assessed. Using the Heureka DSS the suboptimal losses in terms of net present value due to erroneous decisions were compared. Although no large difference was found, the ALS approach showed smaller suboptimal loss than the mean value approach. |
format |
Article in Journal/Newspaper |
author |
Saad, Rami Wallerman, Jörgen Lämås, Tomas |
author_facet |
Saad, Rami Wallerman, Jörgen Lämås, Tomas |
author_sort |
Saad, Rami |
title |
Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning |
title_short |
Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning |
title_full |
Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning |
title_fullStr |
Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning |
title_full_unstemmed |
Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning |
title_sort |
estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning |
publishDate |
2014 |
url |
https://pub.epsilon.slu.se/12038/ https://pub.epsilon.slu.se/12038/1/saad_r_et_al_150330.pdf https://doi.org/10.1080/02827581.2014.978888 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
https://pub.epsilon.slu.se/12038/1/saad_r_et_al_150330.pdf Saad, Rami and Wallerman, Jörgen and Lämås, Tomas (2014). Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning. Scandinavian journal of forest research. 30 :2 , 186-196 [Research article] (Unpublished) |
op_doi |
https://doi.org/10.1080/02827581.2014.978888 |
container_title |
Scandinavian Journal of Forest Research |
container_volume |
30 |
container_issue |
2 |
container_start_page |
186 |
op_container_end_page |
196 |
_version_ |
1766147139535110144 |