Blar i NIVA-rapporter på emneord "tålegrense"
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Atmospheric deposition of nitrogen, runoff of organic nitrogen, and critical loads for soils and waters
(NIVA-rapport;3592, Research report, 1997)Here we test the hypothesis that increased deposition of inorganic N compounds leads to increased leachingand runoff of organic N and thus a higher critical load. We use mainly Norwegian data from input-output fluxes at ... -
Binding grid cells - Norway An evaluation
(NIVA-rapport;3942, Research report, 1998)The quality of the critical load data for so-called "binding grid cells" in Norway has been checked. These are the following EMEP-grids (150km x 150 km): 16,20 16,21 16,30 17,19 17,20 and 18,21. Critical loads have been ... -
Bruk av dynamiske modeller for vurdering av vann- og jordforsuring som følge av redusert tilførsel av sur nedbør
(NIVA-rapport;3148, Research report, 1995)Som følge av den nye svovel-protokollen vil tilførselen av sur nedbør til Norge avta i årene fremover. Den nye tilførselmønsteret vil endre omfang og utbredelse av forsuringsskader i Norge. Dynamiske modeller som beskriver ... -
Critical load exceedance and damage to fish populations
(NIVA-rapport;2900, Research report, 1993)To examine the relationship between the critical load exceedance and the damage to fish, the data for fish damage and water chemistry for 1000 lakes in Norway was used to derive the probability of damage to fish populations ... -
Critical loads for soil in Norway, Nordmoen
(NIVA-rapport;2605, Research report, 1991)We evaluate the critical load for soil and water at Nordmoen using the dynamic model Magic, the static PROFILE model, and the empirical method as suggested by the mapping handbook. Nordmoen is located about 60 km N of Oslo ... -
Critical loads for soils in Norway. Analyses of soils data from eight Norwegian catchments
(NIVA-rapport;2484, Research report, 1990)Assessment of critical loads for soil at the catchment scale requires estimates of soil properties characteristic of the catchment. Soil data collected in routine soil surveys must thus be aggregated both spatially and ... -
Critical loads for soils in Norway. Preliminary assessment based on data from 9 calibrated catchments
(NIVA-rapport;2483, Research report, 1990)Critical load for acid deposition with respect to soils are calculated for 9 calibrated catchments in southern Norway. Two methods recommended by the UN-ECE Handbook on Mapping Critical Loads were used: The stratic empirical ... -
Critical loads for surface waters - chemical criteria for inputs of strong acids
(NIVA-rapport;2466, Research report, 1990)Chemical criteria have been established for the critical loads of strong acids to surface waters in Norway. A complete set of data is available for all the counties with the exception of North Trøndelag, Nordland, Troms ... -
Critical Loads of Acidity to Freshwater - Fish and Invertebrates
(NIVA-rapport;2732, Research report, 1992)Chemical criteria have been established for estimating critical loads of acid precipitation to surface waters. Acid neutralization capacity (ANC) was used as chemical component for describing the critical limits for ... -
Critical loads of acidity to lakes in the Polish Tatra Mountains. Final report
(NIVA-rapport;3579, Research report, 1996)Major chemical compounds in precipitation and runoff have been intensively followed in two Polish, Tatra Mountain lakes (Dlugi Staw and Zielony Staw) since January 1993, to assess the degree of impact of acid precipitation. ... -
Critical loads of acidity to surface waters: A case study from the Polish Tatra Mountains
(NIVA-rapport;2725, Research report, 1992)As part of the Agreement on Environmental Cooperation between Norway and Poland critical loads of acidity and their exceedance to lakes in the granitic area of the Polish Tatra Mountains have been estimated. Lake samples ... -
Development and application of the FAB model to calculate critical loads of S and N for lakes in the Killarney Provincial Park (Ontario, Canada)
(NIVA-rapport;4202, Research report, 2000)In Sudbury, Canada, large reductions in sulfur emissions have resulted in reduced critical load exceedances and partial recovery of many lakes in the Killarney Provincial Park. The First-order Acidity Balance (FAB) model ... -
Dynamic modelling of soil water acidification: display and presentation of results for policy purposes
(NIVA-rapport;4733, Research report, 2003)Dynamic models for soil and water acidification and recovery are becoming increasingly important tools in determining policy for future emissions of air pollutants in Europe. Dynamic models represent the next step in ... -
Effekter av utslipp fra aluminiumsindustri i det marine miljø
(NIVA-rapport;3103, Research report, 1994)Basert på litteraturdata er det gjort en kort sammenstilling av det som er kjent om økologiske effekter av PAH (polysykliske aromatiske hydrokarboner) i det marine miljø mer summarisk for fluorid, forsuring og cyanid. Det ... -
Exceedance of critical loads for lakes in Finland, Norway and Sweden: Reduction requirements for nitrogen and sulfur deposition
(NIVA-rapport;2841, Research report, 1993)The main goal of the present study was to evaluate the different ways of computing the exceedances and the reductions needed for N and S depositions. Two models for calculating the steady state critical loads for N and S ... -
Fiskestatus og vannkjemi i norske innsjøer
(NIVA-rapport;3002, Research report, 1994)Rapporten er basert på 1000-sjøers materiale. Til forskjell fra tidligere statistiske analyser av dette materialet, er det i denne rapporten benyttet logistiske regressioner i tillegg til prinsipal komponent analyse (PCA) ... -
Gap closure: use of Magic model to predict time required to achieve steady-state following implementation of the Oslo protocol
(NIVA-rapport;4012, Research report, 1999)Reduction of sulphur deposition causes recovery of acidified surface waters. Processes in the catchment delay recovery. The acidification model MAGIC was applied to the Vikedal and Tovdal rivers in southern Norway. Water ... -
Map of critical loads (sulphur) for coniferous forest soils in Norway
(NIVA-rapport;2830, Research report, 1992)Maps of critical loads of acidity and exceedance (sulphur) for coniferous forest soils in Norway have been compiled using the dynamic MAGIC model based on the soil survey data of NIJOS and NISK, the atmospheric deposition ... -
Mapping critical levels/loads for the Slovak Republic
(NIVA-rapport;3226, Research report, 1995)As a part of the Agreement on Environmental Cooperation between Norway and Slovakia, a project "Mapping Critical Levels/Loads for Slovakia" has started. The results from the first pilot phase are presented. A pilot area ... -
Mapping of Critical Loads and Critical Load Exceedances in the Killarney Provincial Park, Ontario, Canada
(NIVA-rapport;3889, Research report, 1998)Calculations of critical loads for inputs of strong acids to lakes and exceedances of critical load can be a useful tool for the management of polluted areas. In Sudbury, Canada, large emissions of sulfur dioxide have ...