# Habitat mapping Natural topographic area features are mapped to: * EUNIS habitat type hierarchical view (marine version 2022 & terrestrial version 2021) using Level 1 and Level 2 classification * UK BAP Broad Habitats classification 2008 A simple algorithm automatically maps the OS Land Cover Tier B attribute of natural topographic area features to EUNIS and UK BAP classification scheme values using a lookup table prior to product publication. These are output into the Habitat Coverage Reference table. Mapping the OS land cover classification to EUNIS Level 1 is mandatory. For EUNIS Level 2 and UK BAP it is not always possible to achieve a direct mapping as habitat classifications can be species-based, making it difficult to derive from a land cover classification. In such instances, there will be no entry for these records in the Habitat Coverage Reference table. Coastal features also receive a habitat mapping. Coastal features are defined as being within the intertidal zone +200metre buffer above the Mean High Water (Springs) Line. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.os.uk/osngd/using-os-ngd-data/os-ngd-land-cover-enhancements/habitat-mapping.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.