Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Ole Martin Bollandsås"'
Publikováno v:
Ecosphere, Vol 15, Iss 4, Pp n/a-n/a (2024)
Abstract The transition zone between the upper forest boundary and the treeless alpine vegetation (i.e., the treeline ecotone) is expected to shift upward in elevation with global warming. Multiple factors in addition to climate are influencing tree
Externí odkaz:
https://doaj.org/article/c4f7bdd0431e4769be711f95d4743635
Publikováno v:
Remote Sensing, Vol 16, Iss 16, p 3085 (2024)
The albedo of boreal forests depends on the properties of the forest and is a key parameter for understanding the climate impact of forest management practices at high northern latitudes. While high-resolution albedo retrievals from satellites remain
Externí odkaz:
https://doaj.org/article/f4b94255a48c4dfda898079d359c3e79
Autor:
Svein Solberg, Ole Martin Bollandsås, Terje Gobakken, Erik Næsset, Paromita Basak, Laura Innice Duncanson
Publikováno v:
Remote Sensing, Vol 16, Iss 5, p 861 (2024)
Mapping and quantification of forest biomass change are key for forest management and for forests’ contribution to the global carbon budget. We explored the potential of covering this with repeated acquisitions with TanDEM-X. We used an eight-year
Externí odkaz:
https://doaj.org/article/c69a6228b9374697b01d13083b2cf3a3
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-10 (2022)
Abstract As shrubs and trees are advancing into tundra ecosystems due to climate warming, litter input and microclimatic conditions affecting litter decomposition are likely to change. To assess how the upward shift of high-latitude treeline ecotones
Externí odkaz:
https://doaj.org/article/e92e2a3836b84f0580d54a3e5bc6ff62
Publikováno v:
Remote Sensing in Ecology and Conservation, Vol 8, Iss 4, Pp 536-550 (2022)
Abstract The alpine treeline ecotone is expected to move upwards in elevation with global warming. Thus, mapping treeline ecotones is crucial in monitoring potential changes. Previous remote sensing studies have focused on the usage of satellites and
Externí odkaz:
https://doaj.org/article/d8810089c43b4dc1acb2b4c42b34a11b
Autor:
Lennart Noordermeer, Jaime Candelas Bielza, Svetlana Saarela, Terje Gobakken, Ole Martin Bollandsås, Erik Næsset
Publikováno v:
International Journal of Applied Earth Observations and Geoinformation, Vol 117, Iss , Pp 103201- (2023)
The main objective of this study was to demonstrate a method for monitoring tree occupancy and height in the alpine treeline ecotone using a time series of ALS data. We applied data collected in a longitudinal survey, comprising three spatially consi
Externí odkaz:
https://doaj.org/article/62857572ad1043de806f73b8d41e6811
Autor:
Anders L. Kolstad, Ingrid Bekken Snøan, Gunnar Austrheim, Ole Martin Bollandsås, Erling J. Solberg, James D. M. Speed
Publikováno v:
Remote Sensing in Ecology and Conservation, Vol 8, Iss 1, Pp 5-17 (2022)
Abstract Large herbivores are often classed as ecosystem engineers, and when they become scarce or overabundant, this can alter ecosystem states and influence climate forcing potentials. This realization has spurred a call to integrate large herbivor
Externí odkaz:
https://doaj.org/article/a100272d51964075b4b4d0709b12d6a9
Mapping and Estimating Aboveground Biomass in an Alpine Treeline Ecotone under Model-Based Inference
Autor:
Ritwika Mukhopadhyay, Erik Næsset, Terje Gobakken, Ida Marielle Mienna, Jaime Candelas Bielza, Gunnar Austrheim, Henrik Jan Persson, Hans Ole Ørka, Bjørn-Eirik Roald, Ole Martin Bollandsås
Publikováno v:
Remote Sensing, Vol 15, Iss 14, p 3508 (2023)
Due to climate change, treelines are moving to higher elevations and latitudes. The estimation of biomass of trees and shrubs advancing into alpine areas is necessary for carbon reporting. Remotely sensed (RS) data have previously been utilised exten
Externí odkaz:
https://doaj.org/article/c693e44190674130b673e05b29631927
Autor:
Belachew Gizachew, Svein Solberg, Erik Næsset, Terje Gobakken, Ole Martin Bollandsås, Johannes Breidenbach, Eliakimu Zahabu, Ernest William Mauya
Publikováno v:
Carbon Balance and Management, Vol 11, Iss 1, Pp 1-14 (2016)
Abstract Background A functional forest carbon measuring, reporting and verification (MRV) system to support climate change mitigation policies, such as REDD+, requires estimates of forest biomass carbon, as an input to estimate emissions. A combinat
Externí odkaz:
https://doaj.org/article/0d8b9df88780471b98d2d59ee2c5645b
Publikováno v:
Remote Sensing, Vol 7, Iss 1, Pp 788-807 (2015)
Successful implementation of projects under the REDD+ mechanism, securing payment for storing forest carbon as an ecosystem service, requires quantification of biomass. Airborne laser scanning (ALS) is a relevant technology to enhance estimates of bi
Externí odkaz:
https://doaj.org/article/dcfbbecdd9b049b4bd58057d7c989bc5