Land Cover Map 1990 (vector, N. Ireland)

This dataset consists of the vector version of the Land Cover Map 1990 (LCM1990) for Northern Ireland. The vector data set is the core LCM data set from which the full range of other LCM1990 products is derived. It provides a number of attributes including land cover at the target class level (given as an integer value and also as text), the number of pixels within the polygon classified as each land cover type and a probability value provided by the classification algorithm (for full details see the LCM1990 Dataset Documentation). The 21 target classes are based on the Joint Nature Conservation Committee (JNCC) Broad Habitats, which encompass the entire range of UK habitats.

LCM1990 is a land cover map of the UK which was produced at the UK Centre for Ecology & Hydrology by classifying satellite images (mainly from 1989 and 1990) into 21 Broad Habitat-based classes. It is the first in a series of land cover maps for the UK, which also includes maps for 2000, 2007, 2015, 2017, 2018 and 2019.

LCM1990 consists of a range of raster and vector products and users should familiarise themselves with the full range (see related records, the UK CEH web site and the LCM1990 Dataset documentation) to select the product most suited to their needs.

This work was supported by the Natural Environment Research Council award number NE/R016429/1 as part of the UK-SCAPE programme delivering National Capability.

Full details about this dataset can be found at https://doi.org/10.5285/d6a3588b-23a8-4715-88e9-e21ab0060727

Identification info

Metadata Language: English (en)

Character set: utf8

Dataset Reference Date (): 2020-06-17

Identifier: https://catalogue.ceh.ac.uk/id/d6a3588b-23a8-4715-88e9-e21ab0060727

Identifier: doi: / 10.5285/d6a3588b-23a8-4715-88e9-e21ab0060727

Other citation details: Rowland, C.S., Marston, C.G., Morton, R.D., O’Neil, A.W. (2020). Land Cover Map 1990 (vector, N. Ireland). NERC Environmental Information Data Centre 10.5285/d6a3588b-23a8-4715-88e9-e21ab0060727

UK Centre for Ecology & Hydrology - Rowland, C.S.

UK Centre for Ecology & Hydrology - Marston, C.G.

UK Centre for Ecology & Hydrology - Morton, R.D.

UK Centre for Ecology & Hydrology - O’Neil, A.W.

UK Centre for Ecology & Hydrology - Dr. Claire Rowland

UK Centre for Ecology & Hydrology

NERC Environmental Information Data Centre

NERC EDS Environmental Information Data Centre

Maintenance and update frequency: notPlanned

GEMET - INSPIRE themes, version 1.0 ()

Land Cover

Keywords

Land cover
Mapping
Northern Ireland
LCM1990
vector
UK-SCAPE

Limitations on Public Access: otherRestrictions

Other constraints: no limitations

Use constraints: otherRestrictions

Other constraints: Bespoke licensing conditions apply to these data. If you choose to download the data, the UKCEH Data Licensing team will contact you to negotiate a licence

Use constraints: otherRestrictions

Other constraints: If you reuse this data, you should cite: Rowland, C.S., Marston, C.G., Morton, R.D., O’Neil, A.W. (2020). Land Cover Map 1990 (vector, N. Ireland). NERC Environmental Information Data Centre https://doi.org/10.5285/d6a3588b-23a8-4715-88e9-e21ab0060727

Spatial representation type: vector

Distance: 20 urn:ogc:def:uom:EPSG::9001

Topic category

Biota
Imagery base maps earth cover

Begin date: 1988-01-01

End date: 1990-12-31

Code: TM75 Irish Grid

Distribution Information

Data format

SpatiaLite ( 3 )

Resource Locator: Download the data
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Resource Locator: Supporting information
Supporting information available to assist in re-use of this dataset

Resource Locator: Download the data
Order a copy of this data

Resource Locator: Supporting information
Supporting information available to assist in re-use of this dataset

Quality Scope: dataset

Other: dataset

Report

Dataset Reference Date (): 2010-12-08

Statement: For LCM1990, per-pixel classifications were conducted, using a random forest classification algorithm to classify the different land cover types. The resultant classifications were then mosaicked together, with the best classifications taking priority. This produced a per-pixel classification of the UK, which was then imported into the spatial framework, recording a number of attributes, including the majority class per polygon which is the Land Cover class for each polygon. The 25m raster classification product is the majority class per polygon i.e. the dominant class for each polygon.

LCM1990 uses a spatial framework that is similar to the LCM2007 framework. For both LCM2007, LCM2015 and LCM1990 the framework is based on generalised OS Northern Ireland data. The generalisation (or simplification) process was used to remove very small objects, which provided unnecessary detail. In LCM2007 larger polygons were split using image segmentation; however this was not done for LCM2015 or LCM1990.

Metadata

File identifier: d6a3588b-23a8-4715-88e9-e21ab0060727 XML

Metadata Language: English (en)

Character set: ISO/IEC 8859-1 (also known as Latin 1)

Resource type: dataset

Hierarchy level name: dataset

Metadata Date: 2023-04-24T10:49:28

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Environmental Information Data Centre

Lancaster Environment Centre, Library Avenue, Bailrigg , Lancaster , LA1 4AP , UK

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