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.
2010
Sammendrag
The utilization history of the Lange Bramke catchment and the northern Harz mountains is dominated by ore mining. Historical documents were used to provide ample evidence that forestry and water utilization were managed according to administrative goals in a largely centralized manner. However, the perception of the landscape and its function and purpose have changed significantly over the centuries. In particular, the distinction between renewable (such as forests) and non-renewable resources (such as ore deposits) is a rather modern one, as is the principle of sustainability. This change in perception is apparent from the type of maps used, the different conflicts on property and exploitation rights, and the request for quantitative inventories of resources, appearing only quite late in the mining history. The remnants of smelters and charcoal production still demonstrate the importance of historical land use for proper interpretation of monitoring data.
Sammendrag
In European forests, standing stocks are currently higher than ever during the last decades, in part due to reduced logging or the abandonment of agricultural land. However, data from intensive monitoring plots reveal an increased growth even without direct human intervention.We used a set of 363 plots from 16 European countries to investigate the influence of environmental factors on forest growth: nitrogen, sulphur and acid deposition, temperature, precipitation and drought, for Norway spruce, Scots pine, common beech and European as well as sessile oak.We used existing information on site productivity, stand age and stand density to estimate expected growth. Relative tree growth, i.e., the ratio between actual growth within a five-year period and expected growth, was then related to environmental factors in a stepwise multiple regression.The results consistently indicate a fertilizing effect from nitrogen deposition, with roughly one percent increase in site productivity per kg of nitrogen deposition per ha and year, or 20 kg C fixation per kg N deposition. This was most pronounced for plots having soil C/N ratios above 25. We also found a positive albeit less clear relationship between relative growth and summer temperatures.From the study, we cannot conclude on any detrimental effects on growth from sulphur and acid deposition or from drought periods. A very recent study from the U.S., comprising 4800 plots and 24 tree species, confirms our results. However, we also show that the magnitude of N deposition effects on global forest C balance is currently a highly controversial matter, and comment on this debate. http://www.cef-cfr.ca/uploads/Colloque/Programme10_5.pdf
Sammendrag
The Lange Bramke catchment has been investigated as a monitored catchment for 60 years. However, its utilization history even dates back to medieval times, and is well documented in part. The intense interplay between ore mining, forestry, and water resources exploitation left remains such as scoriae piles and modified forest growth, e.g. due to local pollution at smelter locations. It is demonstrated that considering local land use history is important for a proper understanding and interpretation of modern monitoring data. A theoretical framework is proposed for the integration of the two data sources. This requires a joint approach combining two modelling paradigms, the functional one dominating in current ecosystem research, and an interactive one which best characterizes the human–environment relationship in historic times.
Forfattere
Ulf Winther Yngve Ulgenes Morten Heide Lise Haug Christian Uhlig Hallvard Jensen Sten Ivar Siikavuopio Bjørn-Steinar SætherSammendrag
Det er ikke registrert sammendrag
Forfattere
Hallvard JensenSammendrag
Norge har mange store innsjøer med muligheter for ådrive næringsfiske og matproduksjon basert på innlandsfiskeressursene.Næringsfisket har imidlertid mange økologiske og økonomiske flaskehalser som gjørlønnsom drift til litt av en utfordring.
Forfattere
Knut G Berdal Aksel Bernhoft Gro Ingunn Hemre Askild Lorentz Holck Ingolf Nes Kaare Magne Nielsen Heidi Amlund Thomas Bøhn Jihong Liu Clarke Tron Øystein Gifstad Bjørn Munro Jenssen Helge Klungland Casper Linnestad Richard Meadow Arne Mikalsen Anne Ingeborg Myhr Trond Møretrø Audun Helge Nerland Live Lingaas Nesse Hilde-Gunn Opsahl Sorteberg Odd Egil Stabbetorp Birger Svihus Vibeke Thrane Ole Torrissen Rose Vikse Marit AursandSammendrag
Det er ikke registrert sammendrag
Forfattere
Knut G Berdal Aksel Bernhoft Gro Ingunn Hemre Ingolf Nes Kaare Magne Nielsen Heidi Amlund Jihong Liu Clarke Tron Øystein Gifstad Bjørn Munro Jenssen Helge Klungland Casper Linnestad Arne Mikalsen Anne Ingeborg Myhr Trond Møretrø Audun Helge Nerland Live Lingaas Nesse Hilde-Gunn Opsahl Sorteberg Odd Egil Stabbetorp Birger Svihus Vibeke Thrane Ole Torrissen Marit AursandSammendrag
Det er ikke registrert sammendrag
Forfattere
Knut G Berdal Aksel Bernhoft Gro Ingunn Hemre Askild Lorentz Holck Ingolf Nes Kaare Magne Nielsen Heidi Amlund Thomas Bøhn Jihong Liu Clarke Tron Øystein Gifstad Bjørn Munro Jenssen Helge Klungland Casper Linnestad Richard Meadow Arne Mikalsen Anne Ingeborg Myhr Trond Møretrø Audun Helge Nerland Live Lingaas Nesse Hilde-Gunn Opsahl Sorteberg Odd Egil Stabbetorp Birger Svihus Vibeke Thrane Ole Torrissen Rose Vikse Marit AursandSammendrag
Det er ikke registrert sammendrag
Forfattere
Knut G Berdal Aksel Bernhoft Gro Ingunn Hemre Ingolf Nes Kaare Magne Nielsen Heidi Amlund Jihong Liu Clarke Tron Øystein Gifstad Bjørn Munro Jenssen Helge Klungland Casper Linnestad Arne Mikalsen Anne Ingeborg Myhr Trond Møretrø Audun Helge Nerland Live Lingaas Nesse Hilde-Gunn Opsahl Sorteberg Odd Egil Stabbetorp Birger Svihus Vibeke Thrane Ole Torrissen Marit AursandSammendrag
Det er ikke registrert sammendrag
Forfattere
Ole Martin Eklo Randi Bolli Jens Kværner Tore Sveistrup Eivind Solbakken Frauke HofmeisterSammendrag
In the project "Groundwater and Dependent Ecosystems: New Scientific and Technological Basis for Assessing Climate Change and Land-use Impacts on Groundwater (GENESIS)" coordinated by Bioforsk, the objective is to integrate new methods, concepts and tools for the revision of the Ground Water Directive and better management of groundwater resources. By case studies in different climatic regions various land use pressures are studied.To identify threatens to groundwater pollution MACRO_GV has been used simulating the movement of pesticides used in potatoes and cereals. The simulation set-up and output from the tool was similar to the FOCUS groundwater scenarios. The different soil-types of the area have large differences in risks of leaching to groundwater for the different pesticides. Risk reduction is possible with userfriendlyknowledge about soil and hot spots.