Wirral Part 4 - National Museums Liverpool

Appendix 4 Field System Field Sizes
The only district to supply digital GIS (Vector format) Phase One Habitat Survey was
St Helens - this was used to create the size categories for the field systems.
It means that the work in Liverpool and Wirral Districts was not based on exact size
categories. However the nature of the work on the above two districts meant that
predominantly field system allocation was done mainly at the previous (historic)
periods. It means that the size was allocated on the judgment of the project officer as
the historic mapping was studied.
The Phase One Survey for St Helens contains area in hectares for the polygons,
running a SQL query in MapInfo allows the extraction of records which are only within
a size range which the user can determine.
Capture
Fields will be divided into 3 divisions of size, these division follow closely those used
by both the Lancashire and Cheshire Historic Landscape Characterisation Projects.
Small (20 ha in area)
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