The database assembled for  
'The Common Lands of England - A Biological Survey'  
and commissioned by the  
Department of the Environment, Transport and the Regions 1. The Microsoft Access database file for this application is named '**commons.mdb**'. It contains a set of files that are related through the primary numeric field Commoncd. This is a unique identifier and allows data from the various files to be linked. 2. The commons database has been developed over a ten-year period. The database was originally designed as rudimentary day-to-day working tool for storing data generated from the analysis of commons registers and from the biological survey of commons. Many fields were created for particular analytic or local purposes, and sometimes only apply to parts of the database. It is for this reason that in this handbook only selected fields - more specifically, those used in the display windows of the **Main Form** of the Access database - are highlighted. They are termed here 'active' fields. Users of the database should disregard all but the active fields. 3. Before considering the display windows it is appropriate to comment on the contents of the files included in the database. These files are listed under the **Tables** menu. There are four main files in the database.  **File1** includes data derived either from the commons registers or from the analysis of maps (e.g. mid contour elevation of commons). This file contains 7039 records (i.e. the total number of registered commons - as at the time the registers were last consulted). **File2** also contains information from the commons registers, but mainly it includes items derived from the biological survey. Needless to say, the latter apply only to the 3388 commons included in the field survey. It should be emphasised that the data gathered from the registers in both **File1** and File2 relate to the time at which they were first consulted (mainly in the late 1980s). However, some records - most notably those included in the biological survey have been partially updated, following later references to the registers). For fully up-to-date information reference would need to be made to the registers themselves. For the majority of commons the date at which the registers were first consulted has been noted (see field DATE in **File1**), as has the time at which the biological survey itself was undertaken (see field VISDATE in **File2** and sub-form Use and Management - below). In both **File1** and **File2,** some of the fields are numeric and others are textual strings. Appendices 1 and 2 list the active fields for these two files. 4. In addition to some general identifier fields (e.g. registration CL number, county), File3 contains three main 'text' fields that describe biological attributes of the commons surveyed - vegetation, fauna (when readily available) and associated management issues (if any) - see Appendix 3. The file contains records for all 7039 commons, with the main fields being completed for the 3388 commons included in the survey. 

 
While the first three files have records that relate to particular commons, for **File4** the records are individual patches of Phase1 habitats within commons  - 27029 in all. These habitats can be related to the commons concerned by reference to the link variable - **Commoncd**. In the file the Phase1 code is recorded, together with a short description of the habitat category and its associated area (hectares). This file also records any associations between commons and conservation areas. For the latter 14 numbered categories have been specified (Appendix 4). Also noted is the proportion of the common that lies within these designations (if any). 5. The database includes two further files - **Broadall** and **Pnats** - both of which draw on information contained in **File4**. The file **Broadall** lists the areas of Phase 1 habitats for each of the 3388 commons included in the survey. The habitats are labelled using the Phase1 codes. Also recorded are the areas under each of 21 Broad Habitat Types defined in the UK Biodiversity Action Plan. The latter are labelled BH1-BH21. Codes and descriptions for Phase 1 and Broad habitat categories are included in Appendix 5. For reference purposes the translation of Phase 1 categories into Broad habitats is detailed in Appendix 6. For convenience this file also includes records for those commons not included in the biological survey. The file **Pnats** includes all 7039 registered commons and records the association of commons with particular types of protected areas (Appendix 7). Here **all** commons have been tagged according to whether or not they lie wholly or partly within National Parks, Areas of Outstanding Natural Beauty or Natural Areas.  However for all other conservation designations only those commons that were surveyed have been addressed. 6. Information contained in any of the files described above can be scrutinised directly by opening them individually under the **Tables** menu in the main  database file. For simple display of the full range of data from all of the files, however, an integrated set of forms and sub-forms has been created. This set can be opened through the Forms menu. The relevant file that should be opened here is called - Main Form. Although the majority of the items (fields) displayed are self-evident, some require further comment: 1. Main Form  
 
To aid referencing a set of fields are displayed at all times at the head of the form.  
 
Primary Key :  This is a unique number that has been assigned to each of the registered commons. In most instances it is a compound of a number for the county in which the common was registered and the number of the common in the commons registers (CL number) - see below. Thus, 2001 is common CL1 in the county of Bedfordshire (2). Field COMMONCD in **File1**. Name/Description : This is the name of the common as recorded in the registers or on OS maps. Where there is no such name then simple locational descriptions are provided (e.g. roadside verge to north of town Y). Field NAME in **File1**. CL Number : This is the number originally given to a common by the registration authority. It identifies the commons in the common land registers. Field NUM in File1. Registration Authority : The name of the authority originally charged to open and maintain the registers of common land (normally an administrative area, such as a county or borough). Subsequent reorganisation of the boundaries and names of local government areas means that many of these authorities no longer exist. Field REG in File1. County : The name of the county at the time the registers were consulted. These have also been subject to change following local government reorganisation. Field **CTY** in File1. Parish : Name of parish(es) in which the common is mainly located (i.e. the parish(es) in which the largest portion of the land is located, as determined from 1:50000 OS maps of common land boundaries). Field PARISH in **File1**. 2. Sub-Forms 
(a) Site Area : Area initially recorded in the registers (converted to hectares). Field AREA_HC in **File1**. It should be noted that, for the commons surveyed, this registered area may not be the same as the area derived by aggregating the calculated areas of habitats (see (d) Habitats Types below). This latter area - the calculated area in hectares - is recorded as TOT_HABIT in **File2**. Easting : Easting co-ordinate (essentially a four-figure reference, but with zeros add to make a six-figure reference for use in ArcView GIS). Field EAST in **File1**. Northing : Northing co-ordinate (as above). Field NORTH in **File1**. Map 1 : OS 10-km Square in which the common is dominantly located (i.e. the parish(es) in which the largest portion of the land is located, as determined from 1:50000 OS maps of common land boundaries). Field MAP in **File1**. Map 2 : OS 100-km Square in which the common is dominantly located (i.e. the parish(es) in which the largest portion of the land is located, as determined from 1:50000 OS maps of common land boundaries). Field OS_SHEET in **File1**. Contours : Low, Mid and High contour lines derived from OS 1:50000 maps. Fields MINELEV, MIDELEV and MAXELEV in **File1.** Zero values should be regarded as real (i.e. not 'missing'). Site : Brief description of location of common, derived from OS 1: 50000 maps and other general information from sundry sources (where available). Information derived from three fields - SITE in File1, GEN in **File2** and ANOTES in **File2** Contiguous Commons : This field lists those commons and greens that are contiguous with the record being displayed. The commons concerned are identified by their CL numbers. Contiguous commons were identified using 1:50000 maps of commons boundaries prepared by RSRU. Field CONTIG in **File1**. A blank field applies where  there are no contiguous commons. (b) **Rights/Ownership** Rights of Pasture : Description of types of stock for which rights of pasture were registered. Field STOCK in **File1**. Other Rights of Common : Description of  other rights of common (mainly turbary, piscary, estovers, pannage and common in the soil). Field ORTS in **File1**. Cross-referenced Rights : List of commons (CL numbers) to which rights are also cross-referenced (if any). CREFS in **File 1**. Grazing Intensities : Brief  summary comment on levels of grazing on commons, derived from field observations. This applies only to surveyed commons, where rights of pasture are being exercised. This is a very subjective evaluation, based on on-site assessments of habitat conditions, the numbers of registered rights (which may or may not be exercised) and other local sources. Field GRAZINT in **File2**. General Notes : General notes mainly relating to rights of common. Field GNOTES in **File2**. This field may be blank, depending upon the information available. Ownership : Notes on ownership summarised from registers at time consulted. Field OWNERS in **File2**. This field may be blank, depending upon the information available. 

(c) Flora/Fauna Vegetation : Description of habitat types and flora derived from field surveys and other sources. The text (memo) field is VEG in **File3**. Fauna : Description of fauna. Summary observations from field surveys and occasionally other sources. The text (memo) field is FAUNA in **File3**. See Appendix 3. 

(d) Habitat Types This sub-form lists all Phase1 habitat types recorded for the common concerned. HCODE1 : Phase1 Habitat code (see Appendix 4). Field HCODE1 in **File4**. H1 : Description of Phase1 habitat type. Field H1 in **File4**. HAREA : Area (hectares) of  each Phase1 habitat type. As calculated, using various graphic devices (e.g. planimeter, digitising tablet). Also included in this sub-form, but for visual summary purposes only, is a pie chart showing the relative significance of each of the habitat types listed. It should be noted that the Access charting system adopted here causes habitats with the same areas to have the same colours in the chart. Thus, two habitats each covering an area of, say 1.5 hectares, will be accorded the same colour in the chart (e.g. yellow). For this reason the charts should always be viewed with reference to the set of area statistics from which they are derived. The colours for each habitat type are system selected for each common (i.e. the colours assigned to a particular habitat type will vary from common to common). 

(e) Use and Management This sub-form lists a wide range of activities/uses and indicates whether or not they were noted on the common concerned during the field survey.  There is no need to detail all of the fields listed here (see Appendix 2). Suffice it to say that they are all included in **File2** with the character 'y' confirming presence of the specified use/activity. The sub-form also includes a field that records any brief observations made concerning management issues at the time of the survey. This text field is MANAGE in **File3.** 
(f) Protected Areas This sub-form indicates whether or not a common lies wholly or partly within particular protected area designations. The fields that define these areas are contained in file **Pnats** and are detailed in Appendix 7. This file also includes reference to the association of commons with the Natural Areas  defined by English Nature. 

(g) Broad Habitats This sub-form lists the areas in hectares of broad habitats for the commons surveyed. These areas were derived from an aggregation of the areas calculated for Phase 1 habitat types. The correspondence between Phase 1 types and broad habitat types is detailed in Appendix 6. Cells for habitats that do not occur on a common are left blank. Those commons that were included in the survey (and for which habitat data are available) can be filtered out by placing the cursor in the box that follows the 'Broad Habitat Area' label, and  using the 'filter by form' icon to select those records that have a recorded value for this field. To effect this select 'Is Not Null' from the associated drop down menu and then click the 'Apply Filter' icon. This will select the 3374 commons for which broad habitats have been defined. Phase 1 habitats for 14 commons could not be classified (see Appendix 6). 

## File 1 Active Variables

 
Description 
Field Type 
Variable Name 
 
COMMONCD Unique Identifier Number (for relating databases) 
Numeric 
CTY 
County Name (at time of registration) 
String 
DIS 
District (at time of registration) 
String 
NUM 
Number of Common in Registers 
Numeric 
REG 
Registration Authority (at time of registration) 
String 
AREA_HC 
Registered area (hectares) 
Numeric 
OS_SHEET 
OS sheet number (viz. 100 km sq) 
String 
MAP 
OS map number (viz. 10 km sq) 
String 
EAST 
Easting co-ordinate (6 figures) 
Numeric 
NORTH 
Northing co-ordinate (6 figures) 
Numeric 
NAME 
Name/Description of common (location) 
String 
PARISH 
Name of parish (if recorded) 
String 
SITE 
General description of location 
String 
CONTIG 
Code numbers of contiguous commons 
String 
STOCK 
Types of stock registered 
String 
ORTS 
Other types of rights 
String 
CREFS 
CL units to which rights are cross-referenced (if any) 
String 
MINELEV 
Lowest contour line (metres).  
Numeric 
MIDELEV 
Middle contour line (metres) 
Numeric 
MAXELEV 
Maximum contour line (metres) 
Numeric 
DATE 
Date at which commons registers were consulted 
String 

## File 2 Active Variables

| Description                                  | Variable Type                                           | Variable Name                                |
|----------------------------------------------|---------------------------------------------------------|----------------------------------------------|
|                                              |                                                         |                                              |
| Numeric                                      | COMMONCD                                                | Unique Identifier Number (for relating       |
| databases)                                   |                                                         |                                              |
| CTY                                          | County Name (at time of registration)                   | String                                       |
| DIS                                          | District (at time of registration)                      | String                                       |
| NUM                                          | Number of Common in Registers                           | Numeric                                      |
| REG                                          | Registration Authority (at time of registration) String |                                              |
| VC                                           | Vice-county code number.                                | Numeric                                      |
| VISDATE                                      | Date of Survey visit (if applicable)                    | String                                       |
| GEN                                          | Brief general comments on the common                    | Text (Memo)                                  |
| Text (Memo)                                  | OWNERS                                                  | Summary of statements made in Owners         |
| section                                      |                                                         |                                              |
| of the registers                             |                                                         |                                              |
| Numeric                                      | TOT_HABIT                                               | Calculated area of common land               |
| (for surveyed commons). Zero values indicate |                                                         |                                              |
| commons not surveyed.                        |                                                         |                                              |
| Text (Memo)                                  | ANOTES                                                  | Additional notes from registers (e.g. Acts); |
| highways network                             |                                                         |                                              |
| HAY                                          | Evidence of hay-making                                  | 'Y' = Present                                |
| CATTLE                                       | Evidence of cattle grazing                              | 'Y' = Present                                |
| COPPICE                                      | Evidence of coppicing                                   | 'Y' = Present                                |
| MOWN                                         | Evidence of mowing                                      | 'Y' = Present                                |
| SHEEP                                        | Evidence of sheep grazing                               | 'Y' = Present                                |
| PLANT                                        | Evidence of  plantations                                | 'Y' = Present                                |
| BURN                                         | Evidence of burning                                     | 'Y' = Present                                |
| HORSE                                        | Evidence of horses                                      | 'Y' = Present                                |
| THIN                                         | Evidence of thinning                                    | 'Y' = Present                                |
| RECREATION                                   | Evidence of recreational activities                     |                                              |
| RABBIT                                       | Evidence of rabbits                                     |                                              |
| POLL                                         | Evidence of pollarding                                  | 'Y' = Present                                |
| FISH                                         | Evidence of fishing activities                          | 'Y' = Present                                |
| GROUSE                                       | Evidence of grouse                                      | 'Y' = Present                                |
| DUMPING                                      | Evidence of dumping activities                          | 'Y' = Present                                |
| SOURCE                                       | Field survey or other sources consulted                 | 'Y' = Present                                |
| FLOOD                                        | Evidence of flooding                                    | 'Y' = Present                                |
| SCRUB                                        | Evidence of scrub                                       | 'Y' = Present                                |
| FLUSH                                        | Evidence of flush                                       | 'Y' = Present                                |
| DEADWOOD                                     | Evidence of deadwood                                    | 'Y' = Present                                |
| TREES                                        | Evidence of trees                                       | 'Y' = Present                                |
| GNOTES                                       | General notes (particularly rights of common)           | Text (Memo)                                  |
| FENCES        | Evidence of fencing                          | 'Y' = Present                                 |
|---------------|----------------------------------------------|-----------------------------------------------|
| GARDEN        | Evidence of gardens                          | 'Y' = Present                                 |
| RUBDUMP       | Evidence of rubbish dumping                  | 'Y' = Present                                 |
| VEHDAM        | Evidence of vehicular damage                 | 'Y' = Present                                 |
| NEWROAD       | Evidence of new road construction            | 'Y' = Present                                 |
| ENCROACH      | Evidence of encroachments                    | 'Y' = Present                                 |
| NORITES       | No rights recorded in registers              | 'Y' = Present                                 |
| PASTURE       | Rights of pasture recorded in registers      | 'Y' = Present                                 |
| SHEAP         | Rights to graze sheep recorded in registers  | 'Y' = Present                                 |
| CATT          | Rights to graze cattle recorded in registers | 'Y' = Present                                 |
| 'Y' = Present | HORSEPONY                                    | Rights to graze horses and/or ponies recorded |
| in registers  |                                              |                                               |
| 'Y' = Present | OTHLIVES                                     | Rights for other livestock recorded in        |
| registers     |                                              |                                               |
| ESTOVER       | Rights of estovers recorded in registers     | 'Y' = Present                                 |
| PISCARY       | Rights of piscary recorded in registers      | 'Y' = Present                                 |
| PANNAGE       | Rights of pannage recorded in registers      | 'Y' = Present                                 |
| TURBARY       | Rights of turbary recorded in registers      | 'Y' = Present                                 |
| 'Y' = Present | SOIL                                         | Rights of common in the soil recorded in      |
| registers     |                                              |                                               |
| OTHRITE       | Other types of rights recorded in registers  | 'Y' = Present                                 |
|               |                                              |                                               |
|               |                                              |                                               |
|               |                                              |                                               |

## File3

Active Variables 
Description 
Field Type 
Variable Name 
 
COMMONCD Unique Identifier Number (for relating databases) 
Numeric 
CTY1 
County Name (at time of registration) 
String 
NUM 
Number of Common in Registers 
Numeric 
REG 
Registration Authority (at time of registration) 
String 
DIS 
District (former) This comes after NUM and REG 
String 
FAUNA 
Details of  fauna (where available) 
Text (Memo) 
VEG 
Description of Vegetation  (Phase1 habitats) 
Text (Memo) 
MANAGE 
Observations on management (where available) 
Text (Memo) 
 

## File4

| Description                                     | Variable                                         |
|-------------------------------------------------|--------------------------------------------------|
| Type                                            |                                                  |
| Variable                                        |                                                  |
| Name                                            |                                                  |
|                                                 |                                                  |
| COMMONCD Unique Identifier Number (for relating | Numeric                                          |
| databases)                                      |                                                  |
| HCODE1*                                         | Phase 1 Habitat code                             |
| H1*                                             | Description of Phase 1 code                      |
| HAREA                                           | Area of Phase 1 habitat (hectares)               |
| CS1                                             | Type of Protected Area (see codes below) Numeric |
| Numeric                                         | CSP1                                             |
| Cs1 designation                                 |                                                  |

 
* See Appendix 5 for file Broadall 
 

CS1 Code 

 

1. Site of Special Scientific Interest (SSSI) 2. Nature Conservation Review site (NCR) 3. National Nature Reserves (NNR) 4. Local Nature Reserves (LNR) 5. Environmentally Sensitive Area (ESA) 6. Special Protection Area (SPA) 7. National Park 8. Area of Outstanding Natural Beauty 9. Heritage Coast (HC) 10. County Trust site (CT) 11. National Trust site (NT) 12. Royal Society for the Protection of Birds site (RSPB) 13. Ramsar Site (RAMSAR) 14. Other Conservation Sites/Areas 

 

## Appendix 5 File Name : Broadall

The fields in this file are defined by the Phase 1 labels (e.g. A111) and Broad habitat categories BH1-BH21. Recorded for each of these are the associated areas of common land in hectares. 

## Phase 1 Codes A Woodland And Scrub

A111 Broad-leaved Semi-natural Woodland A112 Broad-leaved Plantation A121 Coniferous Semi-natural A122 Coniferous Plantation A131 Mixed Semi-natural A132 Mixed Plantation A21 Dense Scrub A22 Scattered Scrub A3 Parkland scattered trees A4 Recently-felled  

## B Grassland And Marsh

 
B11 Acidic Grassland : Unimproved B12 Acidic Grassland : Semi-improved B21 Neutral Grassland : Unimproved B22 Neutral Grassland : Semi-Improved B31 Calcareous Grassland Unimproved B32 Calcareous Grassland Semi-improved B4 Improved Grassland B5 Marsh/Marshy Grassland B6 Poor Semi-Improved Grassland 

## C Tall Herb And Fern (C)

 
C11 Bracken : Continuous C12 Bracken : Scattered C22 Upland Species-rich ledges C31 Other : Tall Ruderal C32 Other : Non-ruderal 

 

## D Heathland

 
D11 Dry Dwarf Shrub Heath : Acidic D12 Dry Dwarf Shrub Heath : Basic D2 Wet Dwarf Shrub Heath D3 Lichen/Bryophyte Heath D5 Dry Heath Acidic Mosaic D6 Wet heath/acidic grassland mosaic 
 

## E Mire

 
E161 Blanket Bog E162 Raised Bog E17 Bog : Wet Modified E18 Bog : Dry Modified E21 Flush/Spring : Acid/Neutral E22 Flush/Spring : Basic E23 Flush/Spring Bryophyte Dominant E31 Fen : Valley Mire E32 Fen : Basin Mire E33 Fen-flood plain E4 Bare Peat 
 

## F Swamp, Marginal Habitats (F)

 
F1 Swamp F21 Marginal F22 Inundation 
 

## G Open Water

 
G1 Standing Water G2 Running Water 
 

## H Coastland

 
H11 Intertidal Mud/Sand H12 Intertidal Shingle H13 Intertidal Rocks H23 Saltmarsh /Dunes H24 Saltmarsh/Plants H26 Saltmarsh/Continuous H3 Shingle H4 Rock/Boulders H5 Strandline Vegetation H64 Sand Dune/Slack H65 Sand Dune/grassland H66 Dune Heath H67 Dune Scrub H68 Dune Open H81 Maritime Cliff Hard H82 Maritime Cliff Soft H83 Crevice/ledge vegetation H84 Coastal/maritime grassland H85 Coastal heathland 
 

## I Rock Exposure And Waste

 
I111 Inland Cliff - Acid/Neutral I112 Inland Cliff - Basic I121 Scree - Acid/Neutral I122 Scree - Basic I13 Limestone pavement I141 Other Exposure - Acidic/Neutral I142 Other Exposure - Basic I21 Artificial - Quarry I22 Artificial - Spoil I23 Artificial - Mine I24 Artificial - refuse tip 
 

## J Anthropogenic Habitats

 
J11 Arable J12 Amenity grassland J13 Cultivated - ephemeral J14 Introduced Shrub J21 Hedges - Intact J22 Hedges - Defunct J23 Hedges - With trees J26 Dry Ditch J31 Industrial estate J32 Military building J33 Domestic building J34 Caravan Site J35 Seawall J36 Buildings J4 Bare Ground J5 Other Habitats BH1. Broadleaved, mixed and yew woodland BH2. Coniferous woodland BH3. Boundary and linear features BH4. Arable and horticultural BH5. Improved grassland BH6. Neutral grassland BH7. Calcareous grassland BH8. Acid grassland BH9. Bracken BH10. Dwarf shrub heath BH11. Fen, marsh and swamp BH12. Bog BH3. Standing water and canals BH14. Rivers and streams BH15. Montane habitats BH16. Inland rock BH17. Built up areas and gardens BH18. Supralittoral rock BH19. Supralittoral sediment BH20. Littoral rock BH21. Littoral sediment 

## Correspondence Between The Uk Biodiversity Action Plan Broad Habitat Classification And The Phase 1 Habitat Classification

 
Phase 1  Habitats 
Broad Habitat Types 


A111 Broad-leaved Semi-natural Woodland 
1. Broadleaved, mixed and yew woodland 
A112 Broad-leaved Plantation 
1. Broadleaved, mixed and yew woodland 
A121 Coniferous Semi-natural 
2. Coniferous woodland 
 
A122 Coniferous Plantation 
2. Coniferous woodland 
 
A131 Mixed Semi-natural 
1. Broadleaved, mixed and yew woodland 
A132 Mixed Plantation 
1. Broadleaved, mixed and yew woodland 
A21 Dense Scrub 
1. Broadleaved, mixed and yew woodland 
A22 Scattered Scrub 
Unclassified (subject to context) 
 
A3 Parkland scattered trees 
Unclassified (subject to context) 
 
A4 Recently-felled  
1. Broadleaved, mixed and yew woodland 
B11 Acidic Grassland : Unimproved 
8. Acid grassland 
 
 
B12 Acidic Grassland : Semi-improved  
8. Acid grassland 
 
 
B21 Neutral Grassland : Unimproved 
6. Neutral grassland 
 
 
B22 Neutral Grassland : Semi-Improved 
6. Neutral grassland 
 
 
B31 Calcareous Grassland Unimproved 
7. Calcareous grassland 
 
B32 Calcareous Grassland Semi-improved 
7. Calcareous grassland 
 
B4 Improved Grassland 
5. Improved grassland 
 
B5 Marsh/Marshy Grassland 
11. Fen, marsh and swamp 
 
B6 Poor Semi-Improved Grassland 
5. Improved grassland 
 
C11 Bracken : Continuous 
9. Bracken 


C12 Bracken : Scattered 
Unclassified (subject to context) 
 
C22 Upland Species-rich ledges 
16. Inland rock 
 
 
C31 Other : Tall Ruderal 
Unclassified (subject to context) 
 
C32 Other : Non-ruderal 
Unclassified (subject to context) 
 
D11 Dry Dwarf Shrub Heath : Acidic 
10. Dwarf shrub heath 
 
D12 Dry Dwarf Shrub Heath : Basic 
10. Dwarf shrub heath 
 
D2 Wet Dwarf Shrub Heath 
10. Dwarf shrub heath 
 
D3 Lichen/Bryophyte Heath 
15. Montane habitats 
 
 
D5 Dry Heath Acidic Mosaic 
8. Acid grassland (part)/10 Dwarf Shrub Heath (part) 
D6 Wet heath/acidic grassland mosaic 
8. Acid grassland(part)/10 Dwarf Shrub Heath (part) 
E161 Blanket Bog 
12. Bog 


E162 Raised Bog 
12. Bog 


E17 Bog : Wet Modified 
12. Bog 


E18 Bog : Dry Modified 
12. Bog 


E21 Flush/Spring : Acid/Neutral 
11. Fen, marsh and swamp 
 
E22 Flush/Spring : Basic 
11. Fen, marsh and swamp 
 
E23 Flush/Spring Bryophyte Dominant 
11. Fen, marsh and swamp 
 
E31 Fen : Valley Mire 
11. Fen, marsh and swamp 
 
E32 Fen : Basin Mire 
11. Fen, marsh and swamp 
 
E33 Fen-flood plain 
11. Fen, marsh and swamp 
 
E4 Bare Peat 
Unclassified (subject to context) 
 
F1 Swamp 
11. Fen, marsh and swamp 
 
| F21 Marginal                         | 13. Standing water and canals (part)/14 Rivers and streams    |
|--------------------------------------|---------------------------------------------------------------|
| (part)                               |                                                               |
| F22 Inundation                       | 13. Standing water and canals (part)/14 Rivers and streams    |
| (part)                               |                                                               |
| G1 Standing Water                    | 13. Standing water and canals                                 |
|                                      |                                                               |
| G2 Running Water                     | 14. Rivers and streams                                        |
|                                      |                                                               |
| H11 Intertidal Mud/Sand              | 21. Littoral sediment                                         |
|                                      |                                                               |
| H12 Intertidal Shingle               | 21. Littoral sediment                                         |
|                                      |                                                               |
| H13 Intertidal Rocks                 | 20. Littoral rock                                             |
|                                      |                                                               |
| H23 Saltmarsh /Dunes                 | 21. Littoral sediment                                         |
|                                      |                                                               |
| H24 Saltmarsh/Plants                 | 21. Littoral sediment                                         |
|                                      |                                                               |
| H26 Saltmarsh/Continuous             | 21. Littoral sediment                                         |
|                                      |                                                               |
| H3 Shingle                           | 19. Supralittoral sediment                                    |
|                                      |                                                               |
| H4 Rock/Boulders                     | 18. Supralittoral rock                                        |
|                                      |                                                               |
| H5 Strandline Vegetation             | 19. Supralittoral sediment                                    |
|                                      |                                                               |
| H64 Sand Dune/Slack                  | 19. Supralittoral sediment                                    |
|                                      |                                                               |
| H65 Sand Dune/grassland              | 19. Supralittoral sediment                                    |
|                                      |                                                               |
| H66 Dune Heath                       | 19. Supralittoral sediment                                    |
|                                      |                                                               |
| H67 Dune Scrub                       | 19. Supralittoral sediment                                    |
|                                      |                                                               |
| H68 Dune Open                        | 19. Supralittoral sediment                                    |
|                                      |                                                               |
| H81 Maritime Cliff Hard              | 18. Supralittoral rock                                        |
|                                      |                                                               |
| H82 Maritime Cliff Soft              | 18. Supralittoral rock                                        |
|                                      |                                                               |
| H83 Crevice/ledge vegetation         | 18. Supralittoral rock                                        |
|                                      |                                                               |
| H84 Coastal/maritime grassland       | 18. Supralittoral rock                                        |
|                                      |                                                               |
| H85 Coastal heathland                | 10. Dwarf shrub heath                                         |
|                                      |                                                               |
| I111 Inland Cliff - Acid/Neutral     | 16. Inland rock                                               |
|                                      |                                                               |
| I112 Inland Cliff - Basic            | 16. Inland rock                                               |
|                                      |                                                               |
| I121 Scree - Acid/Neutral            | 16. Inland rock                                               |
|                                      |                                                               |
| I122 Scree - Basic                   | 16. Inland rock                                               |
|                                      |                                                               |
| I13 Limestone pavement               | 16. Inland rock                                               |
|                                      |                                                               |
| I141 Other Exposure - Acidic/Neutral | 16. Inland rock                                               |
|                                      |                                                               |
| I142 Other Exposure - Basic          | 16. Inland rock                                               |
|                                      |                                                               |
| I21 Artificial - Quarry              | 16. Inland rock                                               |
|                                      |                                                               |
| I22 Artificial - Spoil               | 16. Inland rock                                               |
|                                      |                                                               |
| I23 Artificial - Mine                | 16. Inland rock                                               |
|                                      |                                                               |
| I24 Artificial - refuse tip          | 17. Built up areas and gardens                                |
|                                      |                                                               |
| J11 Arable                           | 4. Arable and horticultural                                   |
|                                      |                                                               |
| J12 Amenity grassland                | 5. Improved grassland                                         |
|                                      |                                                               |
| J13 Cultivated - ephemeral           | 17. Built up areas and gardens                                |
|                                      |                                                               |
| J14 Introduced Shrub                 | 1. Broadleaved, mixed and yew woodland                        |
| J21 Hedges - Intact                  | 3. Boundary and linear features                               |
|                                      |                                                               |
| J22 Hedges - Defunct                 | 3. Boundary and linear features                               |
|                                      |                                                               |
| J23 Hedges - With trees              | 3. Boundary and linear features                               |
|                                      |                                                               |
| J26 Dry Ditch                        | 3. Boundary and linear features                               |
|                                      |                                                               |
| J31 Industrial estate                | 17. Built up areas and gardens                                |
|                                      |                                                               |
| J32 Military building                | 17. Built up areas and gardens                                |
|                                      |                                                               |
| J33 Domestic building                | 17. Built up areas and gardens                                |
|                                      |                                                               |
| J34 Caravan Site                     | 17. Built up areas and gardens                                |
|                                      |                                                               |
| J35 Seawall                          | 17. Built up areas and gardens                                |
|                                      |                                                               |
| J36 Buildings                        | 17. Built up areas and gardens                                |
|                                      |                                                               |
| J4 Bare Ground                       | Unclassified (subject to context)                             |
|                                      |                                                               |
| J5 Other Habitats                    | Unclassified (subject to context)                             |
|                                      |                                                               |
|                                      |                                                               |

## File : Pnats

 
Description 
Variable Type 
Variable Name 
 
COMMONCD Unique Identifier Number (for relating 
Numeric 
databases) 
AREA_HC 
Registered area (hectares) 
Numeric 
EAST 
Easting co-ordinate (6 figures) 
Numeric 
NORTH 
Northing co-ordinate (6 figures) 
Numeric 
NATPARK 
Name of National Park (all commons) 
String 
AONB 
Name of AONB (all commons) 
String 
CNTRYPAR 
Name of Country Park (survey commons) String 
Numeric 
NATAREAS 
Code number for Natural Areas (all commons) 
NAME 
Name of Natural Area (all commons) 
String 
CTRUST 
County Wildlife Trust 
'Yes'= Applies 
ESA 
Environmentally Sensitive Area 
'Yes'= Applies 
HCOAST 
Heritage Coast 
'Yes'= Applies 
LNR 
Local Nature Reserve 
'Yes'= Applies 
NCR 
Nature Conservation Review Site 
'Yes'= Applies 
NNR 
National Nature Reserve 
'Yes'= Applies 
NT 
National Trust 
'Yes'= Applies 
OTHER 
Other Conservation sites 
'Yes'= Applies 
RAMSAR 
Ramsar Site 
'Yes'= Applies 
RSPB 
RSPB Site 
'Yes'= Applies 
SPA 
Special Protection Area 
'Yes'= Applies 
SSSI 
Site of Special Scientific Interest 
'Yes'= Applies