Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2018
Authors
Lise Nistrup Jørgensen Annemarie Justesen Min Lin Morten Lillemo Andrea Ficke Pao Theen See Richard Oliver Melanie Stadlmeier Volker Mohler Lorenz Hartl Judith Turner James CockramAbstract
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Authors
Annika Kangas Rasmus Astrup Johannes Breidenbach Jonas Fridman Terje Gobakken Kari T. Korhonen Matti Maltamo Mats Nilsson Thomas Nord-Larsen Erik Næsset Håkan OlssonAbstract
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 the 1980s, laser scanning during the 2000s, and photogrammetric point clouds during the 2010s. In forest management inventories (FMI), utilization of aerial photos started during the 1940s and laser scanning during the 2000s. However, so far, RS has mostly been used for map production and research rather than for estimation of regional parameters or inference on their accuracy. In recent years, the RS technology has been developing very fast. At the same time, the needs for information are constantly increasing. New technologies have created possibilities for cost-efficient production of accurate, large area forest data sets, which also will change the way forest inventories are done in the future. In this study, we analyse the state-of-the-art both in the NFIs and FMIs in the Nordic countries. We identify the benefits and drawbacks of different RS materials and data acquisition approaches with different user perspectives. Based on the analysis, we identify the needs for further development and emerging research questions. We also discuss alternatives for ownership of the data and cost-sharing between different actors in the field.
Editors
Michael Roth Sebastian Eiter Sina Röhner Alexandra Kruse Serge Schmitz Bohumil Frantál Csaba Centeri Marina Frolova Matthias Buchecker Dina Stober Isidora Karan Dan van der HorstAbstract
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Authors
Jan Alexander Lene Frost Andersen Nana Yaa Ohene Asare Dean Basic Edel Oddny Elvevoll Danica Grahek-Ogden Gro Ingunn Hemre Brit Kristine Hjeltnes Merete Hofshagen Åshild Krogdahl Torsten Källqvist Trond Rafoss Ida Skaar Janneche Utne Skåre Hilde-Gunn Opsahl Sorteberg Inger-Lise Steffensen Vigdis Vandvik Yngvild Wasteson Micael WendellAbstract
No abstract has been registered
Authors
Jan Alexander Lene Frost Andersen Nana Yaa Ohene Asare Dean Basic Edel Oddny Elvevoll Danica Grahek-Ogden Gro Ingunn Hemre Brit Kristine Hjeltnes Merete Hofshagen Åshild Krogdahl Torsten Källqvist Trond Rafoss Ida Skaar Janneche Utne Skåre Hilde-Gunn Opsahl Sorteberg Inger-Lise Steffensen Vigdis Vandvik Yngvild Wasteson Micael WendellAbstract
No abstract has been registered
Authors
M. Bauer R. Harzer K. Strobl Johannes KollmannAbstract
River restoration is widely applied, although its effects are poorly understood, and degraded habitats might be difficult to improve. Moreover, there is a lack of monitoring as well as few systematic comparisons of restoration methods. This study presents results of a 4‐year monitoring on River Inn (southern Germany) investigating restoration by gravel or sand addition or embankment removal. The results were compared with reference sites that represent the pre‐restoration conditions. At the landscape scale, we analysed vegetation types based on aerial photographs, whereas at a smaller scale, we undertook vegetation surveys and evaluated species composition, growth, and life form, as well as the proportion of the target vegetation. After 4 years, the data indicated a “negative resilience” of the vegetation back to the state prior to restoration. The structural analysis revealed an extensive spread of reed at expense of bare soil. Thus, the species composition largely regressed to the pre‐restoration conditions, and neither annuals nor other pioneer species showed a long‐term benefit of river restoration. There were differences among the three restoration treatments after 2 years, but no longer after 4 years. However, the river restoration had three positive outcomes: (a) There was a temporary benefit for pioneer vegetation that most likely replenished the seed bank of the respective species, (b) the valuable reed communities showed resilience, and (c) the measures allowed some practical learning as expected for adaptive restoration.
Authors
Tore SkrøppaAbstract
No abstract has been registered