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Accuracy of tree height estimation based on LIDAR data analysis

100%

Sterenczak K., Zasada M.

Folia Forestalia Polonica. Series A . Forestry

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2011

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tom 53

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nr 2

Some modern remote sensing technologies, including LIDAR (LIght Detection And Ranging), have significantly developed recently. Laser scanners mounted on the airborne platform make it possible to collect very precise information over large areas, including tree and stand heights. A literature review shows that the model-based method of tree height determination underestimates this parameter in comparison to field measurements. The objective of the study was to analyze accuracy of the automatic height estimation of Scots pine stands, based on the airborne laser scanning data and the example of the Milicz Forest District. Applied algorithm of the stand segmentation into individual trees gave systematic and significant underestimation of the number of trees. The minimum tree height was estimated with a large negative error reaching up to several meters. The maximum mean and top heights were determined more precisely, with a small negative error of a few percent. The sum of tree heights was determined with an error exceeding 40%, which is caused mostly by the error in estimation of the number of trees.

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European silver fir [Abies alba Mill.] growing in conditions of clear cutting as well as shelter wood and group cutting after cleaning cutting of hornbeam-oak old forest

84%

Jaszczak R., Magnuski K., Malys L.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2008

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tom 07

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nr 3

15-22

3

Assessment of the natural resources of European silver fir (Abies alba Mill.) in the Polish Sudety Mts.

84%

Filipiak M., Barzdajn W.

Dendrobiology

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2004

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tom 51

19-24

Data from floristic publications, forest management records, comprehensive questionnaires and original field research were used to assess the silver fir resources in the Sudety Mts. Fir trees older than 50 years were recorded in over 2000 localities but the mean number of individuals per locality was only about 15. The generally low number of fir trees and their considerable dispersion are the major causes of the poor reproduction of the studied species in the Sudety Mts. In that region, silver fir should receive special treatment and, if possible, excluded from logging plans. Current and projected activities concerned with fir protection are described briefly.

4

Pedunculate oak [Quercus robur L.] growing in conditions of clear, shelterwood and group cuttings following hornbeam-oak old-forest cleaning cuttings

67%

Jaszczak R., Magnuski K., Malys L.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2008

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tom 07

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nr 4

13-20

5

Using FORDRY model to forecast transformation of Norway spruce (Picea abies (L.) Karst.) stands in Nadsyansky Regional Landscape Park (Ukrainian Carpathians)

67%

Kozak I., Parpan T., Shparyk Y., Mylenka M., Kozak-Balaniuk I.

Folia Forestalia Polonica. Series A . Forestry

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2021

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tom 63

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nr 3

Ograniczanie wyników

2 Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

2 Folia Forestalia Polonica. Series A . Forestry

1 Dendrobiology

2 Jaszczak R.

2 Magnuski K.

2 Malys L.

1 Barzdajn W.

1 Filipiak M.

1 Kozak I.

1 Kozak-Balaniuk I.

1 Mylenka M.

1 Parpan T.

1 Shparyk Y.

1 Sterenczak K.

1 Zasada M.

1 2021

1 2011

2 2008

1 2004

Accuracy of tree height estimation based on LIDAR data analysis

European silver fir [Abies alba Mill.] growing in conditions of clear cutting as well as shelter wood and group cutting after cleaning cutting of hornbeam-oak old forest

Assessment of the natural resources of European silver fir (Abies alba Mill.) in the Polish Sudety Mts.

Pedunculate oak [Quercus robur L.] growing in conditions of clear, shelterwood and group cuttings following hornbeam-oak old-forest cleaning cuttings

Using FORDRY model to forecast transformation of Norway spruce (Picea abies (L.) Karst.) stands in Nadsyansky Regional Landscape Park (Ukrainian Carpathians)