Blar i Divisjon for skog og utmark på forfatter "Gobakken, Terje"
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Coupling a differential global navigation satellite system to a cut-to-length harvester operating system enables precise positioning of harvested trees
Noordermeer, Lennart; Sørngård, Erik; Astrup, Rasmus; Næsset, Erik; Gobakken, Terje (Peer reviewed; Journal article, 2021-03-30)Cut-to-length harvesters collect detailed information on the dimensions and characteristics of individual harvested trees. When equipped with global navigation satellite system (GNSS) receivers and motion sensors, the ... -
Estimating stand level stem diameter distribution utilizing harvester data and airborne laser scanning
Maltamo, Matti; Hauglin, Marius; Næsset, Erik; Gobakken, Terje (Journal article; Peer reviewed, 2019-08-07)Accurately positioned single-tree data obtained from a cut-to-length harvester were used as training harvester plot data for k-nearest neighbor (k-nn) stem diameter distribution modelling applying airborne laser scanning ... -
Harvested area did not increase abruptly—how advancements in satellite-based mapping led to erroneous conclusions
Breidenbach, Johannes; Ellison, David; Petersson, Hans; Korhonen, Kari T.; Henttonen, Helena M.; Wallerman, Jörgen; Fridman, Jonas; Gobakken, Terje; Astrup, Rasmus Andreas; Næsset, Erik (Peer reviewed; Journal article, 2022-02-22)Key message: Using satellite-based maps, Ceccherini et al. (Nature 583:72-77, 2020) report abruptly increasing harvested area estimates in several EU countries beginning in 2015. Using more than 120,000 National Forest ... -
Remote sensing and forest inventories in Nordic countries - roadmap for the future
Kangas, Annika; Astrup, Rasmus Andreas; Breidenbach, Johannes; Fridman, Jonas; Gobakken, Terje; Korhonen, Kari T.; Maltamo, Matti; Nilsson, Mats; Nord-Larsen, Thomas; Næsset, Erik; Olsson, Håkan (Journal article; Peer reviewed, 2018-01-18)The Nordic countries have long traditions in forest inventory and remote sensing (RS). In sample-based national forest inventories (NFIs), utilization of aerial photographs started during the 1960s, satellite images during ... -
Species selection in areas subjected to risk of root and butt rot: applying Precision forestry in Norway
Ferreira Aza, Ana Claudia; Kallio, Maarit; Pukkala, Timo; Hietala, Ari Mikko; Gobakken, Terje; Astrup, Rasmus Andreas (Peer reviewed; Journal article, 2022-09-13)Norway’s most common tree species, Picea abies (L.) Karst. (Norway spruce), is often infected with Heterobasidion parviporum Niemelä & Korhonen and Heterobasidion annosum (Fr.) Bref.. Because Pinus sylvestris L. (Scots ... -
UAV-Based Hyperspectral Imagery for Detection of Root, Butt, and Stem Rot in Norway Spruce
Allen, Benjamin James; Dalponte, Michele; Ørka, Hans Ole; Næsset, Erik; Puliti, Stefano; Astrup, Rasmus Andreas; Gobakken, Terje (Peer reviewed; Journal article, 2022-08-08)Numerous species of pathogenic wood decay fungi, including members of the genera Heterobasidion and Armillaria, exist in forests in the northern hemisphere. Detection of these fungi through field surveys is often difficult ...