geocat.ch
Exceedance of critical loads for nitrogen
Excessive deposition of reactive nitrogen compounds (NO₂, NO₃⁻, HNO₃, NH₃, NH₄⁺) causes eutrophication (over-fertilisation) of sensitive ecosystems, contributes to soil acidification and can lead to elevated nitrate leaching with associated leaching of nutrients in the soil. In addition, it also leads to increased production of nitrous oxide. Methods for establishing critical loads for nitrogen are developed and applied in the framework of the UNECE convention on long-range transboundary air pollution. The time series shows the exceedances of the critical loads for nitrogen for sensitive ecosystems for the years 1990, 2000, 2005, 2010, 2015 and 2020 in a resolution of 1 square kilometre. Critical loads only apply for areas containing sensitive ecosystems. The inventories of the following sensitive ecosystems were used for the map: i) Raised bogs and fens from the Federal Inventories of Raised and Transitional Bogs and Fenlands; ii) Dry grasslands from the National Inventory of Dry Grasslands; iii) Various types of vegetation declared worthy of protection, from the vegetation atlas by Hegg et al. (1993); iv) Sites containing mountain hay meadows that are part of the Swiss Biodiversity Monitoring (122 sites); v) Oligotrophic alpine lakes in southern Switzerland (100 lakes); vi) National Forest Inventory sites (10331 sites) and 301 additional sites used for dynamic modelling. Sensitive ecosystems that are not included in these datasets are not considered. Detailed information about the model can be found in the report Critical Loads of Nitrogen and their Exceedances. Actual critical load exceedances can deviate from the modelled grid data. Single pixels must not be used for assessing critical load exceedances at single sites.
Simple
- Alternate title
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CLN Exceedance
- Date (Revision)
- 2022-08-15
- Identifier
- ch.bafu.luftreinhaltung-stickstoff_kritischer_eintrag
- Status
- Completed
Owner
- Spatial representation type
- Grid
- Topic category
-
- K Climatology, meteorology, atmosphere
Extent
Extent
- Description
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Switzerland
))
- Maintenance and update frequency
- As needed
- Duration of Conservation
- 100
- Appraisal of Archival Value
- A
- Reason for Archiving Value
- Evidence of business practice
- Comment on Archival Value
-
Diese Datenbank ist eine Metadatenbank zur Messwertedatenbank.
Resource format
- Title
-
Cloud Optimized GeoTIFF (TIFF / TIF)
- Date
- Edition
-
-
- GEMET
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air
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air pollutant
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pollutant
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- GEMET - INSPIRE themes, version 1.0
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Atmospheric conditions
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Human health and safety
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- geocat.ch
-
-
FSDI Federal Spatial Data Infrastructure
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- geocat.ch
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-
opendata.swiss
-
e-geo.ch
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Conservation and archiving planning AAP - Confederation
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Resource constraints
- Use constraints
- Other restrictions
- Other constraints
- Opendata OPEN: Open use.
Associated resource
- Title
-
Exceedance of critical loads for nitrogen
- Association Type
- Reference to a master resource of which this one is a part
- Language
- Deutsch
- Basic Geodata
- false
- Basic Geodata Legal Level
- Federal
- Distribution format
-
-
Cloud Optimized GeoTIFF (TIFF / TIF)
-
Digital transfer options
- OnLine resource
-
Vorschau map.geo.admin.ch
Preview map.geo.admin.ch
Digital transfer options
- OnLine resource
-
ch.bafu.luftreinhaltung-stickstoff_kritischer_eintrag
WMS-FSDI service, layer "CLN Exceedance"
Digital transfer options
- OnLine resource
-
ch.bafu.luftreinhaltung-stickstoff_kritischer_eintrag
WMTS-FSDI service, layer "CLN Exceedance"
Digital transfer options
- OnLine resource
-
STAC Browser
Download server from geo.admin.ch
Digital transfer options
- OnLine resource
-
BAFU Website
Link for download
Digital transfer options
- OnLine resource
-
Stickstoffhaltige Luftschadstoffe
Link to description
Digital transfer options
- Number of dimensions
- 500
- Cell geometry
- Area
- Reference system identifier
- EPSG:2056
Metadata
- Metadata identifier
- 95e73bc3-da75-4356-9b04-2cc7c3b1cec9
- Language
- Deutsch
- Character encoding
- UTF8
- Language
- Français
- Character encoding
- UTF8
- Language
- Italiano
- Character encoding
- UTF8
- Language
- English
- Character encoding
- UTF8
- Language
- Rumantsch
- Character encoding
- UTF8
Point of contact
Point of contact
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://www.geocat.ch/geonetwork/srv/api/records/95e73bc3-da75-4356-9b04-2cc7c3b1cec9
- Date info (Creation)
- 2017-05-02T15:35:25Z
- Date info (Revision)
- 2026-06-11T10:54:17.326405Z
Metadata standard
- Title
-
eCH-0271
