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.
2007
Authors
Celine ReboursAbstract
No abstract has been registered
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Authors
Mikael Rönnqvist Mikael FriskAbstract
The use of forest fuel in combined heat and power plants is increasing, and procurement and transportation of fuel is a large part of the overall cost. The planning must consider different chipping systems that can be located at harvest areas, terminals or mills and a large variation in demand. Several truck systems are included and there are specific capacities for both transportation and chipping. We describe DSS together with results from a case study at a large forest company in Sweden.
Authors
Eivind Jacobsen Svein Ole Borgen Arne DulsrudAbstract
No abstract has been registered
Authors
Linmei Nie Arne Tollan Oddvar Lindholm Lillian Øygarden Jim Bogen Eirik FørlandAbstract
This paper has provided an overview of experience for sustainable water management in Norway. It covers professional areas of integrated water management including urban stormwater management, hydropower development and environment protection, hydrological data collection and flood control, soil erosion and control measures from agricultural areas, ecosystem conservation in river catchments and sediment transportation, and the long-term development of climate change. Water management should be systematic and predictable, and based on the principle of legality. Selected central acts regulating water management aspects, important regulations including regulations on drinking water, sewage purification, licence fees, safety and supervision of watercourse installations were reviewed. The recognition of the economic value of water is visible in many parts of Norwegian water legislation. Several aspects of urban stormwater management, as a whole of integrated water management, were highlighted in part 1 of the paper. Hydropower development related regulations concerning on environment protection were described in part 2. Floods caused by typical climate in Norway, structural and non-structural measures to mitigate floods were summarised in part 3. Erosion from agricultural areas, control measure, monitoring system were summarised in part 4. Research regarding erosion process in river catchments, glacial erosion, and erosion in clay areas, mountain and arctic rivers, and sediment transportation in rivers were presented in part 5. Climate development in Norway during 1900-2100 was given in the last part of the paper, where regional climate downscale models, empirical and dynamical downscaling, were introduced. Results of climate variation - temperature and precipitation in Norway in the latest 100-150 years and scenarios of climate development during the 21st century were presented.
Authors
Svein Ole BorgenAbstract
No abstract has been registered
Authors
Christer Magnusson Karl Thunes Hans Nyeggen Hans Overgaard Trond Rafoss Solveig Haukeland May Bente Brurberg K. A. Strandenæs Bjørn Økland Bonsak HammeraasAbstract
The detection in 1999 of the pine wood nematode (PWN), Bursaphelenchus xylophilus, in Portugal triggered survey activities in many European countries. With the assumption that PWN would reach frequency 10 times lower than the native B. mucronatus and the requirement of a 95 % confidence limit suggested 2 995 samples to be required for a safe statement on the absence of PWN from the territory surveyed. Samples were taken from 10 circular areas with 50 km diameter erected from a point of import of risk materials. In the period 2000-2006 3 165 wood samples, 2 880 from Pinus sylvestris, 279 from Picea abies and 6 from unknown wood, were collected from 446 logging sites, in 84 municipalities and 13 counties. Of the total material 85 % of the samples came from cutting wastes, timber or lying trees. Wood showing signs of insect activity (incl. Monochamus) formed 73 % of the total material. Nematodes were recorded in 85 % of the samples. The order Rhabditida was most frequent, followed by the orders Aphelenchida, Tylenchida and Dorylaimida. Rhabditid nematodes were equally frequent in pine and spruce, while Aphelenchida (Aphelenchus, Aphelenchoides, Cryptaphelenchus, Seinura and Bursaphelenchus) and Tylenchida (Filenchus, Lelenchus, Ditylenchus, Deladenus and Nothotylenchus) tended to be more common in pinewood. Aphelenchoides was the most common genus. The genus Bursaphelenchus occurred in 1 % of the samples. B. mucronatus was detected in 0,3 % of the samples and most often in cutting waste of pine. The pine wood nematode (PWN), B. xylophilus, was not detected in this survey. The unexpected low natural occurrence of B. mucronatus indicates that the number of potential niches for PWN also is lower than expected, and hence it will be necessary to continue this surveillance program to reach 10 000 samples. The present zone sites in central and south-eastern Norway will be supplemented with 1-2 zone sites in southwestern region of the country. In the future these zone sites will function as permanent observation areas. Care will also be taken to collect all samples from detached wood with signs of Monochamus activity.
Abstract
It is generally recommended that solutions for the treatment of wastewater and toilet waste is based on a detailed knowledge of the local physical and natural conditions as well as socio-economical factors and socio-cultural factors. Based on experience from previous comparable projects the following components are recommended: " The systems should be build as large as possible based on local natural/financial resources " Infiltration systems are preferred if local soil is usable and local water resources are protected " A combination with pre-treatment, compact filtering and extensive filtering in wetlands or peat filters Based on experience from previous comparable projects the following components might also be recommended given a local acceptance: " Urine separating toilets without water/low water consumption " Separate collection of urine in tanks to be stored and reused or safely disposed off " Toilet solid waste to be stored in separate tanks and co-treated with other organic waste fractions " Separate treatment of greywater and urine in extensive infiltration or filter systems These systems makes it possible to a safe, odour free and recycling waste and wastewater treatment without creating unacceptable loads on the environment or risks to human health. Infiltration systems depend on local soils and previous use of ground water.
Authors
Patrik Flisberg Bertil Lidén Mikael RönnqvistAbstract
No abstract has been registered