About: Arrangement of terrestrial laser scanner positions for area-wide stem mapping of natural forests

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	With the development of terrestrial laser scanning (TLS) and its applications in forestry, the question arises as to how the scanners should be ideally placed for the best possible data acquisition. We searched for an optimal scanning distance for recognition of stems in natural beech-dominated forests, focusing particularly on the shading effect of tree stems and terrain. Recognised tree stems in TLS point clouds were compared with reference stem maps. A GIS-based visibility simulation was carried out to enhance the quantitative assessment and generalizability of results. The analyses also include the additive effect of multiple scanning positions. Single scans only have a tree recognition rate above 80% up to a distance of 15mfrom the scanner; using at least three scanning positions a comparable recognition rate was attained up to 20–25 m. A simulated coverage of a beech-dominated natural forest by laser beams using a 40 m square grid of scanning positions captured at least half of the stem perimeter for more than 90% of trees with a DBH >= 10 cm. In sites with rough terrain, the relief configuration has a more significant effect of occlusion than present tree stems. With the development of terrestrial laser scanning (TLS) and its applications in forestry, the question arises as to how the scanners should be ideally placed for the best possible data acquisition. We searched for an optimal scanning distance for recognition of stems in natural beech-dominated forests, focusing particularly on the shading effect of tree stems and terrain. Recognised tree stems in TLS point clouds were compared with reference stem maps. A GIS-based visibility simulation was carried out to enhance the quantitative assessment and generalizability of results. The analyses also include the additive effect of multiple scanning positions. Single scans only have a tree recognition rate above 80% up to a distance of 15mfrom the scanner; using at least three scanning positions a comparable recognition rate was attained up to 20–25 m. A simulated coverage of a beech-dominated natural forest by laser beams using a 40 m square grid of scanning positions captured at least half of the stem perimeter for more than 90% of trees with a DBH >= 10 cm. In sites with rough terrain, the relief configuration has a more significant effect of occlusion than present tree stems. (en)
Title	Arrangement of terrestrial laser scanner positions for area-wide stem mapping of natural forests Arrangement of terrestrial laser scanner positions for area-wide stem mapping of natural forests (en)
skos:prefLabel	Arrangement of terrestrial laser scanner positions for area-wide stem mapping of natural forests Arrangement of terrestrial laser scanner positions for area-wide stem mapping of natural forests (en)
skos:notation	RIV/00027073:_____/13:#0001518!RIV14-GA0-00027073
http://linked.open...avai/predkladatel	Výzkumný ústav Silva Taroucy pro krajinu a okrasné zahradnictví, v.v.i.
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GAP504/10/2018), S
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Král, Kamil Adam, Dušan Adam, Dušan Trochta, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Výzkumný ústav Silva Taroucy pro krajinu a okrasné zahradnictví, v.v.i. (dále jen %22VÚKOZ, v.v.i.%22)
http://linked.open...dnocenehoVysledku	62093
http://linked.open...ai/riv/idVysledku	RIV/00027073:_____/13:#0001518
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	forest inventory; terrestrial laser scanner (en)
http://linked.open.../riv/klicoveSlovo	forest inventory terrestrial laser scanner
http://linked.open...odStatuVydavatele	CA - Kanada
http://linked.open...ontrolniKodProRIV	[6A7680F8A048]
http://linked.open...i/riv/nazevZdroje	Canadian Journal of Forest Research
http://linked.open...in/vavai/riv/obor	GK
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	New insight into the natural temperate forest dynamics - coupling of approaches
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	43
http://linked.open...iv/tvurceVysledku	Adam, Dušan Janík, David Král, Kamil Trochta, Jan
http://linked.open...ain/vavai/riv/wos	000318024900005
issn	0045-5067
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1139/cjfr-2012-0347

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