Evaluation of digital terrain models generated in forest conditions from airborne laser scanning data acquired in two seasons

2011
journal article
article
25
dc.abstract.enAirborne laser scanners (ALS) provide accurate data for digital terrain model (DTM) construction. Because of a small number of experiences, ALS-based DTMs should be tested widely in a variety of forest environments. In this study, a series of DTMs were produced from ALS data, acquired twice in one year (spring/summer). The study was carried out in a 1000- ha forested area in Poland. Spatial resolutions of output DTMs, season of data acquisition, number of vegetation layers and tree species in the first forest floor were evaluated to assess their influence on the DTM errors. Surveying methods were used to collect coordinates of 95 checkpoints. For various output raster resolutions and seasons of data acquisition, mean errors varied between -0.2 and 0.34 m, and root mean square errors varied from 0.28 to 0.79 m. Errors increased linearly with DTM pixel size, and their variability was significantly higher in DTMs derived from summer data than in DTMs derived from spring data. Effects of seasonality were modified by both forest structure and species composition. One-layer stands were more sensitive to season of data acquisition than were multilayer stands, as were larch and alder stands in comparison to pine and oak stands.pl
dc.affiliationWydział Biologii i Nauk o Ziemi : Instytut Geografii i Gospodarki Przestrzennejpl
dc.contributor.authorStereńczak, Krzysztofpl
dc.contributor.authorKozak, Jacek - 129324 pl
dc.date.accessioned2016-09-23T12:56:26Z
dc.date.available2016-09-23T12:56:26Z
dc.date.issued2011pl
dc.description.number4pl
dc.description.physical374-384pl
dc.description.volume26pl
dc.identifier.doi10.1080/02827581.2011.570781pl
dc.identifier.eissn1651-1891pl
dc.identifier.issn0282-7581pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/30701
dc.languageengpl
dc.language.containerengpl
dc.rights.licencebez licencji
dc.subject.enaccuracy assessmentpl
dc.subject.enDTMpl
dc.subject.enforestrypl
dc.subject.enLIDARpl
dc.subtypeArticlepl
dc.titleEvaluation of digital terrain models generated in forest conditions from airborne laser scanning data acquired in two seasonspl
dc.title.journalScandinavian Journal of Forest Researchpl
dc.typeJournalArticlepl
dspace.entity.typePublication
dc.abstract.enpl
Airborne laser scanners (ALS) provide accurate data for digital terrain model (DTM) construction. Because of a small number of experiences, ALS-based DTMs should be tested widely in a variety of forest environments. In this study, a series of DTMs were produced from ALS data, acquired twice in one year (spring/summer). The study was carried out in a 1000- ha forested area in Poland. Spatial resolutions of output DTMs, season of data acquisition, number of vegetation layers and tree species in the first forest floor were evaluated to assess their influence on the DTM errors. Surveying methods were used to collect coordinates of 95 checkpoints. For various output raster resolutions and seasons of data acquisition, mean errors varied between -0.2 and 0.34 m, and root mean square errors varied from 0.28 to 0.79 m. Errors increased linearly with DTM pixel size, and their variability was significantly higher in DTMs derived from summer data than in DTMs derived from spring data. Effects of seasonality were modified by both forest structure and species composition. One-layer stands were more sensitive to season of data acquisition than were multilayer stands, as were larch and alder stands in comparison to pine and oak stands.
dc.affiliationpl
Wydział Biologii i Nauk o Ziemi : Instytut Geografii i Gospodarki Przestrzennej
dc.contributor.authorpl
Stereńczak, Krzysztof
dc.contributor.authorpl
Kozak, Jacek - 129324
dc.date.accessioned
2016-09-23T12:56:26Z
dc.date.available
2016-09-23T12:56:26Z
dc.date.issuedpl
2011
dc.description.numberpl
4
dc.description.physicalpl
374-384
dc.description.volumepl
26
dc.identifier.doipl
10.1080/02827581.2011.570781
dc.identifier.eissnpl
1651-1891
dc.identifier.issnpl
0282-7581
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/30701
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights.licence
bez licencji
dc.subject.enpl
accuracy assessment
dc.subject.enpl
DTM
dc.subject.enpl
forestry
dc.subject.enpl
LIDAR
dc.subtypepl
Article
dc.titlepl
Evaluation of digital terrain models generated in forest conditions from airborne laser scanning data acquired in two seasons
dc.title.journalpl
Scandinavian Journal of Forest Research
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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