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Oppdatert 3.5.2007
av O.W.Røstad
 

Institutt for naturforvaltning (INA)


    Erik Næsset
    Professor

    Postadresse: INA, UMB, Postboks 5003, 1432 Ås
    Besøksadresse: Vollebekk, Vollveien 5
    E-post: erik.naesset@umb.no
    Telefon: 64 96 57 34; Telefax: 64 96 58 02
Fagområde:
Skogregistrering, skogplanlegging, GIS, fjernmåling.

Forskning:
  • Skoglig fotogrammetri
  • Flybåren laserscanning
  • GIS og GPS i skoglige anvendelser
  • Statistiske metoder i ressurskartlegging

Undervisning:
Ansvarlig for:
  • NATF150 - Innføring i arealregistrering i utmark
  • RØP302 - Skogbiometri II
  • SMI200 - Inventering og ressurskartlegging
Underviser også i:
  • RØP300 - Skogbrukets ressursøkonomi og planleggingslære

Utvalgte publikasjoner:

Bollandsås, O.M & Næsset, E. 2007. Estimating percentile-based diameter distributions in uneven-sized Norway spruce stands using airborne laser scanner data. - Scand. J. For. Res., in press.

Magnussen, S., Næsset, E. & Wulder, M.A. 2007. Efficient multiresolution spatial predictions for large data arrays. - Remote Sensing of Environment, in press.

Nelson, R., Næsset, E., Gobakken, T., Ståhl, G. & Gregoire, T. 2007. Regional forest inventory using an airborne profiling LiDAR. - Journal of Forest Planning, in press.

Næsset, E. & Gjevestad, J.G. 2007. Performance of GPS precise point positioning under forest canopies. - Photogrammetric Engineering & Remote Sensing, in press.

Næsset, E. & Nelson, R. 2007. Using airborne laser scanning to monitor tree migration in the boreal-alpine transition zone. - Remote Sensing of Environment, in press.

Solberg, S., Næsset, E. & Bollandsås, O.M. 2006. Single tree segmentation using airborne laser scanner data in a structurally heterogeneous spruce forest. - Photogrammetric Engineering & Remote Sensing 72: 1369-1378.

Solberg, S., Næsset, E., Hanssen, K.H. & Christiansen, E. 2006. Mapping defoliation during a severe insect attack on Scots pine using airborne laser scanning. - Remote Sensing of Environment 102: 364-376.

Gobakken, T. & Næsset, E. 2005. Weibull and percentile models for lidar-based estimation of basal area distribution. - Scand. J. For. Res. 20: 490-502.

Næsset, E. 2005. Assessing sensor effects and effects of leaf-off and leaf-on canopy conditions on biophysical stand properties derived from small-footprint airborne laser data. - Remote Sensing of Environment 98: 356-370.

Næsset, E., Bollandsås, O.M. & Gobakken, T. 2005. Comparing regression methods in estimation of biophysical properties of forest stands from two different inventories using laser scanner data. - Remote Sensing of Environment 94: 541-553.

Næsset, E. & Gobakken, T. 2005. Estimating forest growth using canopy metrics derived from airborne laser scanner data. - Remote Sensing of Environment 96: 453-465.

Eid, T., Gobakken, T. & Næsset, E. 2004. Comparing stand inventories based on photo interpretation and laser scanning by means of cost-plus-loss analyses. - Scand. J. For. Res. 19: 512- 523.

Gobakken, T. & Næsset, E. 2004. Estimation of diameter and basal area distributions in coniferous forest by means of airborne laser scanner data. - Scand. J. For. Res. 19: 529-542.

Næsset, E. 2004. Accuracy of forest inventory using airborne laser-scanning: evaluating the first Nordic full-scale operational project. - Scand. J. For. Res. 19: 554-557.

Næsset, E. 2004. Effects of different flying altitudes on biophysical stand properties estimated from canopy height and density measured with a small-footprint airborne scanning laser. - Remote Sensing of Environment 91: 243-255.

Næsset, E. 2004. Practical large-scale forest stand inventory using small-footprint airborne scanning laser. - Scandinavian Journal of Forest Research, 19: 164-179.

Næsset, E., Gobakken, T., Holmgren, J., Hyyppä, H., Hyypää, J., Maltamo, M., Nilsson, M., Olsson, H., Persson, Å. & Söderman, U. 2004. Laser scanning of forest resources: the Nordic experience. - Scand. J. For. Res. 19: 482-499.

Gobakken, T. & Næsset, E. 2002. Spruce diameter growth in young mixed stands of Norway spruce (Picea abies (L.) Karst.) and birch (Betula pendula Roth B. pubescens Ehrh.). - Forest Ecology and Management 171: 297-308.

Næsset, E. 2002. Determination of mean tree height of forest stands by means of digital photogrammetry. - Scandinavian Journal of Forest Research 17: 446-459.

Næsset, E. 2002. Predicting forest stand characteristics with airborne scanning laser using a practical two-stage procedure and field data. - Remote Sensing of Environment 80: 88-99.

Næsset, E. & Jonmeister, T. 2002. Assessing point accuracy of DGPS under forest canopy before data aquisition, in the field and after postprocessing. - Scandinavian Journal of Forest Research 17: 351-358.

Næsset, E. & Økland, T. 2002. Estimating tree height and crown properties using airborne scanning laser in a boreal nature reserve. - Remote Sensing of Environment 79: 105-115.

Næsset, E. 2001. Effects of differential single- and dual-frequency GPS and GLONASS observations on point accuracy under forest canopies. - Photogrammetric Engineering & Remote Sensing 67: 1021-1026.

Næsset, E. & Bjerknes, K.-O. 2001. Estimating tree heights and number of stems in young forest stands using airborne laser scanner data. - Remote Sensing of Environment 78: 328-340.

Næsset, E., Bjerke, T., Øvstedal, O. & Ryan, L.H. 2000. Contributions of differential GPS and GLONASS observations to point accuracy under forest canopies. - Photogrammetric Engineering & Remote Sensing 66: 403-407.

Næsset, E. 1999. Assessing the effect of erroneous placement of forest stand boundaries on the estimated area of individual stands. - Scandinavian Journal of Forest Research 14: 175-181.

Næsset, E. 1999. Decomposition rate constants of Picea abies logs in southeastern Norway. - Canadian Journal of Forest Research 29: 372-381.

Næsset, E. 1999. Effects of delineation errors in forest stand boundaries on estimated area and timber volumes. - Scandinavian Journal of Forest Research 14: 558-566.

Næsset, E. 1999. Point accuracy of combined pseudorange and carrier phase differential GPS under forest canopy. - Canadian Journal of Forest Research 29: 547-553.

Næsset, E. 1999. Relationship between relative wood density of Picea abies logs and simple classification systems of decayed coarse woody debris. - Scandinavian Journal of Forest Research 14: 454-461.

Næsset, E. & Tveite, B. 1999. Stand volume functions for Picea abies in eastern, central, and northern Norway. - Scandinavian Journal of Forest Research 14: 164-174.

Eid, T. & Næsset, E. 1998. Determination of stand volume in practical forest inventories based on field measurements and photo-interpretation: The Norwegian experience. - Scandinavian Journal of Forest Research 13: 246-254.

Næsset, E. 1998. Positional accuracy of boundaries between clearcuts and mature forest stands delineated by means of aerial photointerpretation. - Canadian Journal of Forest Research 28: 368-374.

Næsset, E. 1997. A spatial decision support system for long-term forest management planning by means of linear programming and a geographical information system. - Scandinavian Journal of Forest Research 12: 77-88.

Næsset, E. 1997. Determination of mean tree height of forest stands using airborne laser scanner data. - ISPRS Journal of Photogrammetry and Remote Sensing 52: 49-56.

Næsset, E. 1997. Estimating timber volume of forest stands using airborne laser scanner data. - Remote Sensing of Environment 61: 246-253.

Næsset, E. 1997. Geographical information systems in long-term forest management and planning with special reference to preservation of biological diversity: a review. - Forest Ecology and Management 93: 121-136.

Næsset, E., Gobakken, T. & Hoen, H.F. 1997. Economic analyis of timber management practices promoting preservation of biological diversity. - Scandinavian Journal of Forest Research 12: 264-272.

Næsset, E. 1996. Conditional tau coefficient for assessment of producer's accuracy of classified remotely sensed data. - ISPRS Journal of Photogrammetry and Remote Sensing 51: 91-98.

Næsset, E. 1996. Derivation of stumpage value and logging costs for individual forest stands using aerial photographs and cartographic modelling. - Scandinavian Journal of Forest Research 11: 388-396.

Næsset, E. 1996. Determination of number of stems in coniferous forest stands by means of aerial photo interpretation. - Scandinavian Journal of Forest Research 11: 76-84.

Næsset, E. 1996. Determination of stumpage value and logging costs in coniferous forest stands by means of aerial photo-interpretation. - Scandinavian Journal of Forest Research 11: 291-299.

Næsset, E. 1996. Use of the weighted Kappa coefficient in classification error assessment of thematic maps. - International Journal of Geographical Information Systems 10: 591-604.

Næsset, E. 1995. A method to test for systematic differences between maps and reality using error matrices. - International Journal of Remote Sensing 16: 3147-3156.

Næsset, E. 1995. Derivation of a predictive model for production of tree species composition maps at small scales using discriminant function analysis. - Scandinavian Journal of Forest Research 10: 90-96.

Næsset, E. 1995. Determination of mean diameter by basal area in stands of Picea abies and Pinus sylvestris in Southeastern Norway by means of aerial photographs. - Scandinavian Journal of Forest Research 10: 296-304.

Næsset, E. 1995. Photo interpretation of areas with thin soil cover and bedrock outcrops within forest stands. - Scandinavian Journal of Forest Research 10: 82-89.

Næsset, E. 1995. Stand volume functions for Picea abies in western Norway. - Scandinavian Journal of Forest Research 10: 42-50.

Næsset, E. 1995. Testing for marginal homogeneity of remote sensing classification error matrices with ordered categories. - ISPRS Journal of Photogrammetry and Remote Sensing 50(2): 30-36.

Næsset, E. 1994. Short-range spatial distribution of soil depth in forest stands with shallow soils. - Communications of Skogforsk 47(2): 1-24.

Næsset, E. 1993. Interpretation of stand mean height, crown closure and tree species on aerial photographs from summer and autumn. - Communications of Skogforsk 46(11): 1-28.

Næsset, E. 1992. Interpretation of tree species mixture on infrared and panchromatic aerial photos. - Communications of Skogforsk 44(10): 1-20.

Næsset, E. 1992. Systematic sampling of nonproductive land within stands. - Communications of Skogforsk 45(1): 1-28.

Næsset, E. 1992. Using a geographic information system to estimate the capital value of border-cutting. - Communications of Skogforsk 45(2): 1-14.

Fullstendig publikasjonsliste

Institutt for naturforvaltning
Postboks 5003
1432 Ås
Tlf: 64 96 58 00
E-post: ina@umb.no
 
Vollebekk:
Tlf.: 64 96 50 21
Faks: 64 96 58 02
Varelev.: Vollveien 5
(bygning nr. 1)
Urbygningen:
Tlf.: 64 96 58 00
Faks: 64 96 58 01
Varelev.: Ole Sverres plass 1
(bygning nr. 30)