Blar i Divisjon for skog og utmark på utgivelsesdato
Viser treff 81-100 av 522
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Interferometric SAR DEMs for Forest Change in Uganda 2000–2012
(Journal article; Peer reviewed, 2018-02-02)Monitoring changes in forest height, biomass and carbon stock is important for understanding the drivers of forest change, clarifying the geography and magnitude of the fluxes of the global carbon budget and for providing ... -
Estimation of phosphorus-based flame retardant in wood by hyperspectral imaging—a new method
(Journal article; Peer reviewed, 2018-02-15)It is recognised that flame retardant chemicals degrade and leach out of flame-protected wood claddings when exposed to natural weathering. However, the ability to survey the current state of a flame retardant treatment ... -
Tree-Stump Detection, Segmentation, Classification, and Measurement Using Unmanned Aerial Vehicle (UAV) Imagery
(Journal article; Peer reviewed, 2018-02-27)Unmanned aerial vehicles (UAVs) are increasingly used as tools to perform a detailed assessment of post-harvest sites. One of the potential use of UAV photogrammetric data is to obtain tree-stump information that can then ... -
High-pruning of European beech (Fagus sylvatica L.) and pedunculate oak (Quercus robur L.): work efficiency for target pruning as a function of tree species, pruning height, branch characteristics, pole saw type and operator
(Journal article; Peer reviewed, 2018-02-27)The objective of this study was to establish an operational model of productive work time per tree (work efficiency) for high-pruning of young European beech and pedunculate oak depending on tree species, pruning height, ... -
Skogtilstand og verneverdier i områdene øst for Glomma -sammenlignet med regionale og nasjonale resultater.
(NIBIO Rapport;4(52) 2018, Research report, 2018-04)I områdene øst for Glomma sør for Elverum har fylkesmennene takket nei til tilbud om frivillig vern av flere skogområder. Begrunnelsen for dette er at områdene ikke har hatt tilstrekkelig høy kvalitet ut fra den metodikken ... -
Runoff prediction in ungauged catchments in Norway: comparison of regionalization approaches
(Journal article; Peer reviewed, 2018-04-01)Runoff prediction in ungauged catchments has been a challenging topic over recent decades. Much research have been conducted including the intensive studies of the PUB (Prediction in Ungauged Basins) Decade of the International ... -
Cyclic small rodents in boreal forests and the effects of even-aged forest management: Patterns and predictions from a long-term study in southeastern Norway
(Journal article; Peer reviewed, 2018-04-12)Small mammals, especially microtine rodents, play an important role in the dynamics of boreal forest ecosystems. Even-aged forest management, in which old, semi-natural forests are converted to clear-cuts and culturally ... -
A comparison of two methods of data collection for modelling productivity of harvesters: manual time study and follow-up study using on-board-computer stem records
(Journal article; Peer reviewed, 2018-04-13)Productivity of a mechanized P. patula cut-to-length harvesting operation was estimated and modelled using two methods of data collection: manual time study and follow-up study using StanForD stem files. The objective of ... -
Explaining European fungal fruiting phenology with climate variability
(Journal article; Peer reviewed, 2018-04-14)Here we assess the impact of geographically dependent (latitude, longitude, and alti-tude) changes in bioclimatic (temperature, precipitation, and primary productivity) variability on fun-gal fruiting phenology across ... -
The environmental impacts of wood compared to other building materials
(NIBIO RAPPORT;4(56) 2018, Research report, 2018-04-25)Miljøpåvirkning av tre sammenlignet med andre bygningsmaterialer Den norske regjeringen har satt klare mål for å redusere forbruket av fossil energi og klimagassutslipp. Byggsektoren kan bidra for å nå disse målene ved å: ... -
Langsiktig feltforsøk i skog ved NIBIO
(NIBIO Rapport;, Research report, 2018-04-30)For å kunne utvikle kunnskapsbaser for forskning innen en bærekraftig forvaltning av skog og skogbruk, er det viktig å ha skogforsøk og å ta vare på de langsiktige feltforsøk i skog som NIBIO i dag forvalter. Rammebetingelser ... -
Predicting delay factors when chipping wood at forest roadside landings
(Journal article; Peer reviewed, 2018-05-15)Chipping of bulky biomass assortments at roadside landings is a common and costly step in the biomass-to-energy supply chain. This operation normally involves one chipping unit and one or several transport trucks working ... -
Inferring Surface Albedo Prediction Error Linked to Forest Structure at High Latitudes
(Journal article; Peer reviewed, 2018-05-17)Predicting the surface albedo of a forest of a given species composition or plant functional type is complicated by the wide range of structural attributes it may display. Accurate characterizations of forest structure are ... -
Helikoptertopping og -kvisting av trær langs kraftlinjer
(Journal article, 2018-06)Kapping og beskjæring av tretopper langs kraftlinjer med sag fra helikopter reduserer risikoen for trefall på kraftlinja og kan være et kostnadseffektivt tiltak med få ulemper for skogeier. Topping eller kvisting med ... -
Skjøtselsbelter i ungskog langs kraftlinjer
(Journal article, 2018-06)Mange steder langs kraftlinjene står skogen i dag upleid og tett, og med liten styrke til å tåle vind og snø utgjør den en betydelig risiko for trefall på linjene. Ett av tiltakene for å redusere denne risikoen er å etablere ... -
Trefall over kraftlinjer: Hvor er risikoen størst?
(Journal article, 2018-06)Trefall på kraftlinjer utgjør en betydelig risiko for strømforsyningen. Digitale kartdata sammen med risikomodeller kan hjelpe nettselskapene til å finne særlig utsatte nettstrekninger, og prioritere skogbehandling der. -
Snøskader på trær langs kraftledninger
(Journal article, 2018-06)Årsaken har vært store snøfall, med våt snø og til dels i kombinasjon med vind. Det var én episode i november 2016, og flere liknende hendelser vinteren 2017-2018. Det har hovedsakelig vært bøyde trær og trær med topp- ... -
An inverse shortest path approach to find forwarder productivity functions
(Journal article; Peer reviewed, 2018-06-05)This paper presents an optimization model designed to find productivity functions for timber forwarding. Timber forwarding or skidding has for some 25 years been calculated using shortest path formulations on grid networks. ... -
Subtle foodscape displacement of a native ungulate by free-ranging livestock in a forest agroecosystem
(Journal article; Peer reviewed, 2018-06-28)The prevalence of livestock grazing in wildlife area s is increasing. This transformation of ecosys- tems into agroecosystems is concerning because the intr oduction of new species may cause niche displacement of the ... -
The potential to use documentation in national Red Lists to characterize red-listed forest species in Fennoscandia and to guide conservation
(Journal article; Peer reviewed, 2018-06-30)Loss of biodiversity is a pressing global issue, hence it is vital to facilitate informed and effective conservation. As conservation mainly operates at the level of habitats, aiming for species of conservation interest, ...