Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2013
Forfattere
Yanliang Wang Sissel Haugslien Marit Almvik Nicholas Clarke Anne K. Falk Øgaard Jihong Liu ClarkeSammendrag
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Forfattere
Jihong Liu Clarke Gottschamel Johanna Hege Særvold Steen Sissel Haugslien Andreas G. Lössl Stephanie Ruf Ralph BockSammendrag
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Forfattere
Ilse Geijzendorffer Felix Herzog Rob Jongman Stefano Targetti M. Knotters I. Staritsky Youssef Ammari Siyka Angelova Michaela Arndorfer Debra Bailey Katalin Balázs András Báldi Marion Bogers D. Brus R.G.H. Bunce Jean-Philippe Choisis Peter Dennis Tetyana Dyman Sebastian Eiter Wendy Fjellstad Mariecia D. Fraser T. Frank Jürgen Friedel Salah Garchi Tiziano Gomiero Philippe Jeanneret Gergely Jerkovich Max Kainz Esezah Kakudidi Eszter Kelemen Roland Kölliker Norman Kwikiriza Anikó Kovács-Hostyánszki Luisa Last Gisela Lüscher Gerardo Moreno Charles Nkwiine John Opio Marie-Louise Oschatz Maurizio Guido Paoletti Philippe Pointereau S. Riedel Jean-Pierre Sarthou Manuel Schneider Norman Siebrecht Daniele Sommaggio Siyka Stoyanova Erich Szerencsits Davide Viaggi J. Wilkes Sebastian Wolfrum Sergiy YashchenkoSammendrag
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Forfattere
Debra Bailey Youssef Ammari Siyka Angelova Michaela Arndorfer Katalin Balázs András Báldi Marion Bogers Robert Gerald Henry Bunce Jean-Philippe Choisis Peter Dennis Tetyana Dyman Sebastian Eiter Wendy Fjellstad Thomas Frank Mariecia D. Fraser Jürgen Friedel Salah Garchi Ilse Geijzendorffer Tiziano Gomiero Felix Herzog Philippe Jeanneret Gergely Jerkovich Rob Jongman Max Kainz Esezah Kakudidi Eszter Kelemen Anikó Kovács-Hostyánszki Norman Kwikiriza Roland Kölliker Luisa Last Gisela Lüscher Gerardo Moreno Charles Nkwiine John Opio Marie-Louise Oschatz Maurizio Guido Paoletti Philippe Pointereau Jean-Pierre Sarthou Manuel Schneider Norman Siebrecht Daniele Sommaggio Siyka Stoyanova Stella Targetti Sebastian Wolfrum Varvara YashchenkoSammendrag
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Forfattere
Lise Gunn SkrettebergSammendrag
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Forfattere
Lise SkrettebergSammendrag
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Forfattere
Lise Gunn SkrettebergSammendrag
Foredrag på Nordic Pesticide Residue Workshop, Finland juni 2013
Sammendrag
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Sammendrag
There is a need for monitoring methods for forest volume, biomass and carbon based on satellite remote sensing. In the present study we tested interferometric X-band SAR (InSAR) from the Tandem-X mission. The aim of the study was to describe how accurate volume and biomass could be estimated from InSAR height and test whether the relationships were curvilinear or not. The study area was a spruce dominated forest in southeast Norway. We selected 28 stands in which we established 192 circular sample plots of 250 m2, accurately positioned by a Differential Global Positioning System (dGPS). Plot level data on stem volume and aboveground biomass were derived from field inventory. Stem volume ranged fromzero to 596 m3/ha, and aboveground biomass up to 338 t/ha.We generated 2 Digital Surface Models (DSMs) fromInSAR processing of two co-registered, HH-polarized TanDEM-X image pairs – one ascending and one descending pair.We used a Digital TerrainModel (DTM) from airborne laser scanning (ALS) as a reference and derived a 10 m × 10 m Canopy Height Model (CHM), or InSAR height model. We assigned each plot to the nearest 10 m × 10 m InSAR height pixel. We applied a nonlinear, mixed model for the volume and biomass modeling, and from a full model we removed effects with a backward stepwise approach. InSAR heightwas proportional to volume and aboveground biomass, where a 1 m increase in InSAR height corresponded to a volume increase of 23 m3/ha and a biomass increase of 14 t/ha. Root Mean Square Error (RMSE) values were 43–44% at the plot level and 19–20% at the stand level.
Sammendrag
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